7d33da3727
socket client now retries connect/IO failures with 2-4-8-16-30s backoffs (60s total budget). transparent for non-tool callers via request(); tool handlers go through request_retried() which also returns the retry count, then annotate_retries() appends a one-line note to the tool result so claude knows the slow round-trip was a c0re flicker, not a content failure — avoids burning tokens on an LLM-level retry.
736 lines
29 KiB
Rust
736 lines
29 KiB
Rust
//! Embedded MCP server. Claude Code (running inside the agent container)
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//! launches this as a stdio child via `--mcp-config`; tool calls land here
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//! and are translated to `AgentRequest::*` / `ManagerRequest::*` against
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//! hyperhive's own per-container unix socket at `/run/hive/mcp.sock`.
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//!
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//! Two protocols, two surfaces:
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//! - **hyperhive socket** at `/run/hive/mcp.sock` — JSON-line, our
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//! broker-routed protocol. Unaffected by this module.
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//! - **MCP stdio** owned by this module — what claude actually speaks.
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//!
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//! Two server flavors:
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//! - `AgentServer` — sub-agent tools (`send`, `recv`).
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//! - `ManagerServer` — agent tools + lifecycle (`request_spawn`, `kill`,
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//! `request_apply_commit`).
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//!
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//! Both go through the same `run_tool_envelope` helper so logging + status
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//! line stay uniform.
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use std::future::Future;
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use std::path::PathBuf;
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use anyhow::Result;
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use rmcp::{
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ServerHandler, ServiceExt, handler::server::wrapper::Parameters, schemars, tool, tool_handler,
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tool_router, transport::stdio,
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};
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use crate::client;
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/// Wire-protocol-agnostic view of a hyperhive socket response. Both
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/// `AgentResponse` and `ManagerResponse` convert into this so the tool
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/// formatters can be shared between `AgentServer` and `ManagerServer`.
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#[derive(Debug)]
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pub enum SocketReply {
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Ok,
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Err(String),
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Message { from: String, body: String },
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Empty,
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Status(u64),
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QuestionQueued(i64),
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Recent(Vec<hive_sh4re::InboxRow>),
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}
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impl From<hive_sh4re::AgentResponse> for SocketReply {
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fn from(r: hive_sh4re::AgentResponse) -> Self {
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match r {
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hive_sh4re::AgentResponse::Ok => Self::Ok,
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hive_sh4re::AgentResponse::Err { message } => Self::Err(message),
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hive_sh4re::AgentResponse::Message { from, body } => Self::Message { from, body },
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hive_sh4re::AgentResponse::Empty => Self::Empty,
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hive_sh4re::AgentResponse::Status { unread } => Self::Status(unread),
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hive_sh4re::AgentResponse::Recent { rows } => Self::Recent(rows),
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hive_sh4re::AgentResponse::QuestionQueued { id } => Self::QuestionQueued(id),
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}
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}
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}
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impl From<hive_sh4re::ManagerResponse> for SocketReply {
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fn from(r: hive_sh4re::ManagerResponse) -> Self {
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match r {
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hive_sh4re::ManagerResponse::Ok => Self::Ok,
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hive_sh4re::ManagerResponse::Err { message } => Self::Err(message),
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hive_sh4re::ManagerResponse::Message { from, body } => Self::Message { from, body },
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hive_sh4re::ManagerResponse::Empty => Self::Empty,
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hive_sh4re::ManagerResponse::Status { unread } => Self::Status(unread),
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hive_sh4re::ManagerResponse::QuestionQueued { id } => Self::QuestionQueued(id),
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hive_sh4re::ManagerResponse::Recent { rows } => Self::Recent(rows),
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}
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}
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}
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/// Format helper for "send-like" tools (anything that expects an `Ok`).
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/// `tool` and `ok_msg` only appear in the result string; they don't change
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/// behavior.
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pub fn format_ack(resp: Result<SocketReply, anyhow::Error>, tool: &str, ok_msg: String) -> String {
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match resp {
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Ok(SocketReply::Ok) => ok_msg,
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Ok(SocketReply::Err(m)) => format!("{tool} failed: {m}"),
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Ok(other) => format!("{tool} unexpected response: {other:?}"),
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Err(e) => format!("{tool} transport error: {e:#}"),
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}
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}
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/// Format helper for `recv` tools: `Message` → from + body block;
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/// `Empty` → marker; anything else surfaces as an error.
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pub fn format_recv(resp: Result<SocketReply, anyhow::Error>) -> String {
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match resp {
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Ok(SocketReply::Message { from, body }) => format!("from: {from}\n\n{body}"),
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Ok(SocketReply::Empty) => "(empty)".into(),
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Ok(SocketReply::Err(m)) => format!("recv failed: {m}"),
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Ok(other) => format!("recv unexpected response: {other:?}"),
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Err(e) => format!("recv transport error: {e:#}"),
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}
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}
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|
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|
/// Common envelope around every MCP tool handler: pre-log → run →
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|
/// post-log. The inbox-status hint used to be appended to every tool
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|
/// result; that lives in the wake prompt + UI header now, so tool
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/// results stay clean.
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pub async fn run_tool_envelope<F>(tool: &'static str, args: String, body: F) -> String
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where
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|
F: Future<Output = String>,
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{
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tracing::info!(tool, %args, "tool: request");
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let result = body.await;
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tracing::info!(tool, result = %result, "tool: result");
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result
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}
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|
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/// Append a short note to a tool result when the underlying socket call
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/// took retries to land. Lets claude distinguish "my request was wrong"
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/// from "c0re flickered and the harness rode it out" — without the
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/// hint, a tool result that took 30s to come back looks identical to a
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/// content failure and the model would burn a turn retrying it.
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pub fn annotate_retries(mut s: String, retries: u32) -> String {
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if retries > 0 {
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let suffix = if retries == 1 { "retry" } else { "retries" };
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s.push_str(&format!(
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"\n\n(note: hive socket connect needed {retries} {suffix} — c0re likely \
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restarted. Your request did succeed on the final attempt; no action needed.)"
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));
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}
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|
s
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}
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|
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|
#[derive(Debug, serde::Deserialize, schemars::JsonSchema)]
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|
pub struct SendArgs {
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/// Logical agent name to deliver the message to (e.g. `"manager"`,
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/// `"alice"`, or the literal `"operator"` for the dashboard's T4LK box).
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|
pub to: String,
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|
/// Message body. Plain text; the broker doesn't parse it.
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pub body: String,
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}
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#[derive(Debug, serde::Deserialize, schemars::JsonSchema)]
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pub struct RecvArgs {
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|
/// How long to long-poll for a new message before returning the
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/// empty marker. Capped at 60s server-side. Default (None) is
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/// 30s. Useful when an agent wants to throttle wakes without
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/// actually napping — pick a longer wait to coalesce bursts.
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|
#[serde(default)]
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|
pub wait_seconds: Option<u64>,
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|
}
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|
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|
/// Per-agent tool surface. Holds the socket path so each tool call doesn't
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/// re-derive it; the socket itself is the per-container `/run/hive/mcp.sock`.
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#[derive(Debug, Clone)]
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pub struct AgentServer {
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socket: PathBuf,
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}
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impl AgentServer {
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|
#[must_use]
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pub fn new(socket: PathBuf) -> Self {
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Self { socket }
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}
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/// Issue any `AgentRequest` through the retry-aware client and pull
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/// the reply through `SocketReply`. Returns the retry count so tool
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/// handlers can annotate their result (see `annotate_retries`).
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|
async fn dispatch(
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&self,
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req: hive_sh4re::AgentRequest,
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) -> (Result<SocketReply, anyhow::Error>, u32) {
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match client::request_retried::<_, hive_sh4re::AgentResponse>(&self.socket, &req).await {
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Ok((r, n)) => (Ok(SocketReply::from(r)), n),
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Err(e) => (Err(e), 0),
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|
}
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}
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}
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|
#[tool_router]
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impl AgentServer {
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#[tool(
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description = "Send a message to another hyperhive agent (or to the operator). \
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Use this to talk to peers or to surface output for the human at the dashboard."
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)]
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|
async fn send(&self, Parameters(args): Parameters<SendArgs>) -> String {
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let log = format!("{args:?}");
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let to = args.to.clone();
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if let Err(refusal) = check_send_allowed(&to) {
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return run_tool_envelope("send", log, async move { refusal }).await;
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}
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run_tool_envelope("send", log, async move {
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let (resp, retries) = self
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.dispatch(hive_sh4re::AgentRequest::Send {
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to: args.to,
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body: args.body,
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})
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|
.await;
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annotate_retries(format_ack(resp, "send", format!("sent to {to}")), retries)
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})
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|
.await
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|
}
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|
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|
#[tool(
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|
description = "Surface a question to the operator on the dashboard. Returns immediately \
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with a question id — do NOT wait inline. When the operator answers, a system message \
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with event `operator_answered { id, question, answer }` lands in your inbox; handle it \
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on a future turn. Use this when a decision needs human signal (ambiguous scope, \
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permission to do something risky, choosing between options). `options` is advisory: \
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pass a short fixed-choice list when applicable, otherwise leave empty for free text. \
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Set `multi: true` to let the operator pick multiple options (checkboxes); the answer \
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comes back as a comma-separated string. Set `ttl_seconds` to auto-cancel a \
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|
no-longer-relevant question — on expiry the answer is `[expired]` and the same \
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|
`operator_answered` event fires."
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|
)]
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|
async fn ask_operator(&self, Parameters(args): Parameters<AskOperatorArgs>) -> String {
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|
let log = format!("{args:?}");
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|
run_tool_envelope("ask_operator", log, async move {
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|
let (resp, retries) = self
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.dispatch(hive_sh4re::AgentRequest::AskOperator {
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|
question: args.question,
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|
options: args.options,
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|
multi: args.multi,
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|
ttl_seconds: args.ttl_seconds,
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|
})
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|
.await;
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|
let s = match resp {
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|
Ok(SocketReply::QuestionQueued(id)) => format!(
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|
"question queued (id={id}); operator's answer will arrive as a system \
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`operator_answered` event in your inbox"
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|
),
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|
Ok(SocketReply::Err(m)) => format!("ask_operator failed: {m}"),
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|
Ok(other) => format!("ask_operator unexpected response: {other:?}"),
|
|
Err(e) => format!("ask_operator transport error: {e:#}"),
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|
};
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|
annotate_retries(s, retries)
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|
})
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|
.await
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|
}
|
|
|
|
#[tool(
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|
description = "Pop one message from this agent's inbox. Returns the sender and body, \
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|
or an empty marker if nothing is waiting. Without `wait_seconds` (or with 0) the \
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|
call returns immediately — a cheap 'anything pending?' peek. Pass a positive \
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|
`wait_seconds` (capped at 180) to park the turn waiting for new work — incoming \
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|
messages wake you instantly, otherwise the call returns empty at the timeout. \
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|
That's strictly better than a fixed shell `sleep`. Typical pattern: when you have \
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nothing else useful to do, call `recv(wait_seconds: 180)` to park until \
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|
something arrives."
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|
)]
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|
async fn recv(&self, Parameters(args): Parameters<RecvArgs>) -> String {
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|
let log = format!("{args:?}");
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|
run_tool_envelope("recv", log, async move {
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|
let (resp, retries) = self
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|
.dispatch(hive_sh4re::AgentRequest::Recv {
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|
wait_seconds: args.wait_seconds,
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|
})
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|
.await;
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|
annotate_retries(format_recv(resp), retries)
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|
})
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|
.await
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|
}
|
|
}
|
|
|
|
#[tool_handler(
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|
instructions = "You are a hyperhive agent. Use `send` to talk to peers (by their logical \
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|
name) or to the operator (recipient `operator`). Use `recv` to drain your inbox one \
|
|
message at a time."
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|
)]
|
|
impl ServerHandler for AgentServer {}
|
|
|
|
/// Run the agent MCP server over stdio. Returns when the client disconnects.
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|
pub async fn serve_agent_stdio(socket: PathBuf) -> Result<()> {
|
|
let server = AgentServer::new(socket);
|
|
let service = server.serve(stdio()).await?;
|
|
service.waiting().await?;
|
|
Ok(())
|
|
}
|
|
|
|
/// Run the manager MCP server over stdio. Same idea, different tool surface.
|
|
pub async fn serve_manager_stdio(socket: PathBuf) -> Result<()> {
|
|
let server = ManagerServer::new(socket);
|
|
let service = server.serve(stdio()).await?;
|
|
service.waiting().await?;
|
|
Ok(())
|
|
}
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// Manager tool surface
|
|
// -----------------------------------------------------------------------------
|
|
|
|
#[derive(Debug, serde::Deserialize, schemars::JsonSchema)]
|
|
pub struct RequestSpawnArgs {
|
|
/// New sub-agent name (≤9 chars). Queues a Spawn approval; the
|
|
/// operator approves on the dashboard before the container is created.
|
|
pub name: String,
|
|
/// Optional description shown on the dashboard approval card so the
|
|
/// operator knows what the new agent is for without a separate message.
|
|
#[serde(default)]
|
|
pub description: Option<String>,
|
|
}
|
|
|
|
#[derive(Debug, serde::Deserialize, schemars::JsonSchema)]
|
|
pub struct KillArgs {
|
|
/// Sub-agent name (without the `h-` container prefix).
|
|
pub name: String,
|
|
}
|
|
|
|
#[derive(Debug, serde::Deserialize, schemars::JsonSchema)]
|
|
pub struct StartArgs {
|
|
/// Sub-agent name (without the `h-` container prefix).
|
|
pub name: String,
|
|
}
|
|
|
|
#[derive(Debug, serde::Deserialize, schemars::JsonSchema)]
|
|
pub struct RestartArgs {
|
|
/// Sub-agent name (without the `h-` container prefix).
|
|
pub name: String,
|
|
}
|
|
|
|
#[derive(Debug, serde::Deserialize, schemars::JsonSchema)]
|
|
pub struct UpdateArgs {
|
|
/// Sub-agent name (without the `h-` container prefix).
|
|
pub name: String,
|
|
}
|
|
|
|
#[derive(Debug, serde::Deserialize, schemars::JsonSchema)]
|
|
pub struct AskOperatorArgs {
|
|
/// The question to surface on the dashboard.
|
|
pub question: String,
|
|
/// Optional fixed-choice answers. The dashboard always renders a
|
|
/// free-text fallback ("Other…") so the operator is never trapped
|
|
/// by an incomplete list.
|
|
#[serde(default)]
|
|
pub options: Vec<String>,
|
|
/// When true, options are rendered as checkboxes — operator can pick
|
|
/// any subset. The answer comes back as a single string with
|
|
/// selections joined by ", ". Ignored when `options` is empty.
|
|
#[serde(default)]
|
|
pub multi: bool,
|
|
/// Optional auto-cancel after `ttl_seconds`. On expiry the question
|
|
/// resolves with answer `[expired]` and the manager receives the
|
|
/// usual `operator_answered` system event. `None` (default) =
|
|
/// wait indefinitely.
|
|
#[serde(default)]
|
|
pub ttl_seconds: Option<u64>,
|
|
}
|
|
|
|
#[derive(Debug, serde::Deserialize, schemars::JsonSchema)]
|
|
pub struct RequestApplyCommitArgs {
|
|
/// Agent whose config repo the commit lives in (use `"hm1nd"` for the
|
|
/// manager's own config).
|
|
pub agent: String,
|
|
/// Git sha (full or short) pointing at the proposed `agent.nix`.
|
|
pub commit_ref: String,
|
|
/// Optional description shown on the dashboard approval card so the
|
|
/// operator knows what the change does without opening the diff.
|
|
#[serde(default)]
|
|
pub description: Option<String>,
|
|
}
|
|
|
|
#[derive(Debug, Clone)]
|
|
pub struct ManagerServer {
|
|
socket: PathBuf,
|
|
}
|
|
|
|
impl ManagerServer {
|
|
#[must_use]
|
|
pub fn new(socket: PathBuf) -> Self {
|
|
Self { socket }
|
|
}
|
|
|
|
/// Helper: issue any `ManagerRequest` through the retry-aware
|
|
/// client, convert the reply through `SocketReply`, and return the
|
|
/// retry count alongside so the tool handler can `annotate_retries`
|
|
/// on the final string.
|
|
async fn dispatch(
|
|
&self,
|
|
req: hive_sh4re::ManagerRequest,
|
|
) -> (Result<SocketReply, anyhow::Error>, u32) {
|
|
match client::request_retried::<_, hive_sh4re::ManagerResponse>(&self.socket, &req).await {
|
|
Ok((r, n)) => (Ok(SocketReply::from(r)), n),
|
|
Err(e) => (Err(e), 0),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[tool_router]
|
|
impl ManagerServer {
|
|
#[tool(
|
|
description = "Send a message to a sub-agent (by logical name), to another agent, \
|
|
or to the operator (recipient `operator`, surfaces in the dashboard)."
|
|
)]
|
|
async fn send(&self, Parameters(args): Parameters<SendArgs>) -> String {
|
|
let log = format!("{args:?}");
|
|
let to = args.to.clone();
|
|
run_tool_envelope("send", log, async move {
|
|
let (resp, retries) = self
|
|
.dispatch(hive_sh4re::ManagerRequest::Send {
|
|
to: args.to,
|
|
body: args.body,
|
|
})
|
|
.await;
|
|
annotate_retries(format_ack(resp, "send", format!("sent to {to}")), retries)
|
|
})
|
|
.await
|
|
}
|
|
|
|
#[tool(
|
|
description = "Pop one message from the manager inbox. Returns sender + body, or \
|
|
empty. Without `wait_seconds` (or 0) returns immediately — a cheap inbox peek. \
|
|
Pass a positive value (capped at 180) to park until either a message arrives \
|
|
or the timeout fires; prefer a long wait (120 or 180) over ending a turn \
|
|
early when you have nothing else to do."
|
|
)]
|
|
async fn recv(&self, Parameters(args): Parameters<RecvArgs>) -> String {
|
|
let log = format!("{args:?}");
|
|
run_tool_envelope("recv", log, async move {
|
|
let (resp, retries) = self
|
|
.dispatch(hive_sh4re::ManagerRequest::Recv {
|
|
wait_seconds: args.wait_seconds,
|
|
})
|
|
.await;
|
|
annotate_retries(format_recv(resp), retries)
|
|
})
|
|
.await
|
|
}
|
|
|
|
#[tool(
|
|
description = "Queue a Spawn approval for a brand-new sub-agent. The operator \
|
|
approves on the dashboard before the container is actually created."
|
|
)]
|
|
async fn request_spawn(&self, Parameters(args): Parameters<RequestSpawnArgs>) -> String {
|
|
let log = format!("{args:?}");
|
|
let name = args.name.clone();
|
|
run_tool_envelope("request_spawn", log, async move {
|
|
let (resp, retries) = self
|
|
.dispatch(hive_sh4re::ManagerRequest::RequestSpawn {
|
|
name: args.name,
|
|
description: args.description,
|
|
})
|
|
.await;
|
|
annotate_retries(
|
|
format_ack(
|
|
resp,
|
|
"request_spawn",
|
|
format!("spawn approval queued for {name}"),
|
|
),
|
|
retries,
|
|
)
|
|
})
|
|
.await
|
|
}
|
|
|
|
#[tool(
|
|
description = "Stop a sub-agent container (graceful). The state dir is kept; \
|
|
recreating reuses prior config + Claude credentials. No approval required."
|
|
)]
|
|
async fn kill(&self, Parameters(args): Parameters<KillArgs>) -> String {
|
|
let log = format!("{args:?}");
|
|
let name = args.name.clone();
|
|
run_tool_envelope("kill", log, async move {
|
|
let (resp, retries) = self
|
|
.dispatch(hive_sh4re::ManagerRequest::Kill { name: args.name })
|
|
.await;
|
|
annotate_retries(format_ack(resp, "kill", format!("killed {name}")), retries)
|
|
})
|
|
.await
|
|
}
|
|
|
|
#[tool(
|
|
description = "Start a stopped sub-agent container. No approval required — \
|
|
lifecycle ops on existing containers are at the manager's discretion."
|
|
)]
|
|
async fn start(&self, Parameters(args): Parameters<StartArgs>) -> String {
|
|
let log = format!("{args:?}");
|
|
let name = args.name.clone();
|
|
run_tool_envelope("start", log, async move {
|
|
let (resp, retries) = self
|
|
.dispatch(hive_sh4re::ManagerRequest::Start { name: args.name })
|
|
.await;
|
|
annotate_retries(format_ack(resp, "start", format!("started {name}")), retries)
|
|
})
|
|
.await
|
|
}
|
|
|
|
#[tool(description = "Restart a sub-agent container (stop + start). No approval required.")]
|
|
async fn restart(&self, Parameters(args): Parameters<RestartArgs>) -> String {
|
|
let log = format!("{args:?}");
|
|
let name = args.name.clone();
|
|
run_tool_envelope("restart", log, async move {
|
|
let (resp, retries) = self
|
|
.dispatch(hive_sh4re::ManagerRequest::Restart { name: args.name })
|
|
.await;
|
|
annotate_retries(
|
|
format_ack(resp, "restart", format!("restarted {name}")),
|
|
retries,
|
|
)
|
|
})
|
|
.await
|
|
}
|
|
|
|
#[tool(
|
|
description = "Rebuild a sub-agent: re-applies the current hyperhive flake + agent.nix \
|
|
and restarts the container. No approval required — idempotent. Use when you receive a \
|
|
`needs_update` system event for an agent."
|
|
)]
|
|
async fn update(&self, Parameters(args): Parameters<UpdateArgs>) -> String {
|
|
let log = format!("{args:?}");
|
|
let name = args.name.clone();
|
|
run_tool_envelope("update", log, async move {
|
|
let (resp, retries) = self
|
|
.dispatch(hive_sh4re::ManagerRequest::Update { name: args.name })
|
|
.await;
|
|
annotate_retries(
|
|
format_ack(resp, "update", format!("updated {name}")),
|
|
retries,
|
|
)
|
|
})
|
|
.await
|
|
}
|
|
|
|
#[tool(
|
|
description = "Surface a question to the operator on the dashboard. Returns immediately \
|
|
with a question id — do NOT wait inline. When the operator answers, a system message \
|
|
with event `operator_answered { id, question, answer }` lands in your inbox; handle it \
|
|
on a future turn. Use this when a decision needs human signal (ambiguous sub-agent \
|
|
request, policy call, scope clarification). `options` is advisory: pass a short \
|
|
fixed-choice list when applicable, otherwise leave empty for free text. Set \
|
|
`multi: true` to let the operator pick multiple options (checkboxes); the answer \
|
|
comes back as a comma-separated string. Set `ttl_seconds` to auto-cancel a \
|
|
no-longer-relevant question instead of blocking forever — on expiry the answer \
|
|
is `[expired]` and the same `operator_answered` event fires."
|
|
)]
|
|
async fn ask_operator(&self, Parameters(args): Parameters<AskOperatorArgs>) -> String {
|
|
let log = format!("{args:?}");
|
|
run_tool_envelope("ask_operator", log, async move {
|
|
let (resp, retries) = self
|
|
.dispatch(hive_sh4re::ManagerRequest::AskOperator {
|
|
question: args.question,
|
|
options: args.options,
|
|
multi: args.multi,
|
|
ttl_seconds: args.ttl_seconds,
|
|
})
|
|
.await;
|
|
let s = match resp {
|
|
Ok(SocketReply::QuestionQueued(id)) => format!(
|
|
"question queued (id={id}); operator's answer will arrive as a system \
|
|
`operator_answered` event in your inbox"
|
|
),
|
|
Ok(SocketReply::Err(m)) => format!("ask_operator failed: {m}"),
|
|
Ok(other) => format!("ask_operator unexpected response: {other:?}"),
|
|
Err(e) => format!("ask_operator transport error: {e:#}"),
|
|
};
|
|
annotate_retries(s, retries)
|
|
})
|
|
.await
|
|
}
|
|
|
|
#[tool(
|
|
description = "Submit a config change for operator approval. Pass the agent name \
|
|
(e.g. `alice` or `hm1nd` for the manager's own config) and a commit sha in that \
|
|
agent's proposed config repo. On approval hive-c0re rebuilds the container."
|
|
)]
|
|
async fn request_apply_commit(
|
|
&self,
|
|
Parameters(args): Parameters<RequestApplyCommitArgs>,
|
|
) -> String {
|
|
let log = format!("{args:?}");
|
|
let agent = args.agent.clone();
|
|
let commit_ref = args.commit_ref.clone();
|
|
run_tool_envelope("request_apply_commit", log, async move {
|
|
let (resp, retries) = self
|
|
.dispatch(hive_sh4re::ManagerRequest::RequestApplyCommit {
|
|
agent: args.agent,
|
|
commit_ref: args.commit_ref,
|
|
description: args.description,
|
|
})
|
|
.await;
|
|
annotate_retries(
|
|
format_ack(
|
|
resp,
|
|
"request_apply_commit",
|
|
format!("apply approval queued for {agent} @ {commit_ref}"),
|
|
),
|
|
retries,
|
|
)
|
|
})
|
|
.await
|
|
}
|
|
}
|
|
|
|
#[tool_handler(
|
|
instructions = "You are the hyperhive manager (hm1nd). You coordinate sub-agents and \
|
|
relay between them and the operator. Use `send` to talk to agents/operator, `recv` \
|
|
to drain your inbox. Privileged: `request_spawn` (new agent, gated on operator \
|
|
approval), `kill` (graceful stop), `request_apply_commit` (config change for \
|
|
any agent including yourself), `ask_operator` (block on a human answer via the \
|
|
dashboard). The manager's own config lives at \
|
|
`/agents/hm1nd/config/agent.nix`."
|
|
)]
|
|
impl ServerHandler for ManagerServer {}
|
|
|
|
/// Name of the hyperhive MCP server inside claude's view. Claude prefixes
|
|
/// tools as `mcp__<this>__<tool>` (e.g. `mcp__hyperhive__send`).
|
|
pub const SERVER_NAME: &str = "hyperhive";
|
|
|
|
/// Which hyperhive MCP surface to advertise — sub-agent (short tool
|
|
/// list) or manager (full lifecycle surface). Threaded through the
|
|
/// system-prompt renderer and the per-flavor web UI dispatch; tool
|
|
/// gating itself now lives in `claude-settings.json`'s
|
|
/// `permissions.{defaultMode, deny}`, not here.
|
|
#[derive(Debug, Clone, Copy)]
|
|
pub enum Flavor {
|
|
Agent,
|
|
Manager,
|
|
}
|
|
|
|
/// Where the NixOS module writes the per-agent extra-MCP spec (see
|
|
/// `nix/templates/harness-base.nix`). Each entry becomes an additional
|
|
/// `mcpServers.<key>` block in the rendered claude config; the
|
|
/// `allowedTools` field is parsed for back-compat but no longer wired
|
|
/// anywhere — under `bypassPermissions` every MCP tool auto-approves
|
|
/// unless listed in `permissions.deny`.
|
|
const EXTRA_MCP_PATH: &str = "/etc/hyperhive/extra-mcp.json";
|
|
|
|
/// Where the NixOS module writes the per-agent send allow-list (see
|
|
/// `nix/templates/harness-base.nix`). Empty list = unrestricted (the
|
|
/// default). Non-empty list constrains `mcp__hyperhive__send`'s `to`
|
|
/// field; the manager is always implicitly permitted regardless of
|
|
/// the list contents.
|
|
const SEND_ALLOW_PATH: &str = "/etc/hyperhive/send-allow.json";
|
|
|
|
/// Enforce the per-agent send allow-list. Returns `Ok` when the
|
|
/// recipient is permitted (no list configured, manager always
|
|
/// allowed, or `to` is in the list); returns `Err(refusal)` with a
|
|
/// claude-readable string when blocked — the harness surfaces the
|
|
/// refusal as the tool result so claude knows the message didn't
|
|
/// land and can react (e.g. route via the manager instead).
|
|
fn check_send_allowed(to: &str) -> Result<(), String> {
|
|
if to == hive_sh4re::MANAGER_AGENT {
|
|
// Always allow agents to talk to the manager — otherwise a
|
|
// misconfigured allow-list could leave a sub-agent unable
|
|
// to ask for help.
|
|
return Ok(());
|
|
}
|
|
let Ok(raw) = std::fs::read_to_string(SEND_ALLOW_PATH) else {
|
|
return Ok(()); // file missing → no policy configured → unrestricted
|
|
};
|
|
let allow: Vec<String> = match serde_json::from_str(&raw) {
|
|
Ok(v) => v,
|
|
Err(e) => {
|
|
tracing::warn!(
|
|
path = SEND_ALLOW_PATH,
|
|
error = ?e,
|
|
"send allow-list parse failed; falling back to unrestricted",
|
|
);
|
|
return Ok(());
|
|
}
|
|
};
|
|
if allow.is_empty() {
|
|
return Ok(()); // empty list = unrestricted (back-compat)
|
|
}
|
|
if allow.iter().any(|n| n == to) {
|
|
return Ok(());
|
|
}
|
|
Err(format!(
|
|
"send refused: recipient '{to}' not in hyperhive.allowedRecipients \
|
|
(configured in agent.nix). Allowed: {allow:?}. The manager is \
|
|
always reachable — route through `send(to: \"manager\", …)` if \
|
|
you need to reach someone outside the allow-list."
|
|
))
|
|
}
|
|
|
|
#[derive(Debug, serde::Deserialize)]
|
|
struct ExtraMcpServer {
|
|
command: String,
|
|
#[serde(default)]
|
|
args: Vec<String>,
|
|
#[serde(default)]
|
|
env: std::collections::BTreeMap<String, String>,
|
|
#[serde(default = "default_allowed_tools")]
|
|
#[serde(rename = "allowedTools")]
|
|
#[allow(dead_code)] // back-compat: superseded by `permissions.deny`
|
|
allowed_tools: Vec<String>,
|
|
}
|
|
|
|
fn default_allowed_tools() -> Vec<String> {
|
|
vec!["*".to_owned()]
|
|
}
|
|
|
|
/// Read + parse the extra-MCP spec. Returns an empty map on missing /
|
|
/// unparsable file (the agent has none configured, or the file is
|
|
/// malformed — both cases degrade to "no extra servers").
|
|
fn load_extra_mcp() -> std::collections::BTreeMap<String, ExtraMcpServer> {
|
|
let Ok(raw) = std::fs::read_to_string(EXTRA_MCP_PATH) else {
|
|
return std::collections::BTreeMap::new();
|
|
};
|
|
serde_json::from_str(&raw).unwrap_or_else(|e| {
|
|
tracing::warn!(
|
|
path = EXTRA_MCP_PATH,
|
|
error = ?e,
|
|
"extra-mcp spec parse failed; ignoring",
|
|
);
|
|
std::collections::BTreeMap::new()
|
|
})
|
|
}
|
|
|
|
/// Render the MCP config blob claude reads from `--mcp-config <path>`.
|
|
/// `agent_binary` is the path (or PATH-resolvable name) of the `hive-ag3nt`
|
|
/// executable; `socket` is the hyperhive per-agent socket bind-mounted into
|
|
/// the container (forwarded to the child as `--socket <path>`). Merges in
|
|
/// any extra MCP servers declared via `hyperhive.extraMcpServers` in the
|
|
/// agent's NixOS config.
|
|
#[must_use]
|
|
pub fn render_claude_config(agent_binary: &str, socket: &std::path::Path) -> String {
|
|
let mut servers = serde_json::Map::new();
|
|
servers.insert(
|
|
SERVER_NAME.to_owned(),
|
|
serde_json::json!({
|
|
"command": agent_binary,
|
|
"args": ["--socket", socket.display().to_string(), "mcp"],
|
|
"env": {}
|
|
}),
|
|
);
|
|
for (name, spec) in load_extra_mcp() {
|
|
if name == SERVER_NAME {
|
|
tracing::warn!(
|
|
"extra MCP server name `{SERVER_NAME}` collides with the built-in surface; ignoring",
|
|
);
|
|
continue;
|
|
}
|
|
servers.insert(
|
|
name,
|
|
serde_json::json!({
|
|
"command": spec.command,
|
|
"args": spec.args,
|
|
"env": spec.env,
|
|
}),
|
|
);
|
|
}
|
|
let config = serde_json::json!({ "mcpServers": servers });
|
|
serde_json::to_string_pretty(&config).unwrap_or_else(|_| "{}".into())
|
|
}
|