whoami: new mcp tool returning name/role/pronouns/hyperhive_rev on both surfaces

hive-ag3nt/src/bin/hive-ag3nt.rs

@@ -236,7 +236,8 @@ async fn serve(
                 | AgentResponse::Recent { .. }
                 | AgentResponse::QuestionQueued { .. }
                 | AgentResponse::OpenThreads { .. }
-                | AgentResponse::PendingRemindersCount { .. },
+                | AgentResponse::PendingRemindersCount { .. }
+                | AgentResponse::Whoami { .. },
             ) => {
                 tracing::warn!("recv produced unexpected response kind");
             }

hive-ag3nt/src/bin/hive-m1nd.rs

@@ -204,7 +204,8 @@ async fn serve(
                 | ManagerResponse::Recent { .. }
                 | ManagerResponse::Logs { .. }
                 | ManagerResponse::OpenThreads { .. }
-                | ManagerResponse::PendingRemindersCount { .. },
+                | ManagerResponse::PendingRemindersCount { .. }
+                | ManagerResponse::Whoami { .. },
             ) => {
                 tracing::warn!("recv produced unexpected response kind");
             }

hive-ag3nt/src/mcp.rs

@@ -42,6 +42,12 @@ pub enum SocketReply {
     Logs(String),
     OpenThreads(Vec<hive_sh4re::OpenThread>),
     PendingRemindersCount(u64),
+    Whoami {
+        name: String,
+        role: String,
+        operator_pronouns: String,
+        hyperhive_rev: Option<String>,
+    },
 }
 
 impl From<hive_sh4re::AgentResponse> for SocketReply {
@@ -58,6 +64,17 @@ impl From<hive_sh4re::AgentResponse> for SocketReply {
             hive_sh4re::AgentResponse::PendingRemindersCount { count } => {
                 Self::PendingRemindersCount(count)
             }
+            hive_sh4re::AgentResponse::Whoami {
+                name,
+                role,
+                operator_pronouns,
+                hyperhive_rev,
+            } => Self::Whoami {
+                name,
+                role,
+                operator_pronouns,
+                hyperhive_rev,
+            },
         }
     }
 }
@@ -77,6 +94,17 @@ impl From<hive_sh4re::ManagerResponse> for SocketReply {
             hive_sh4re::ManagerResponse::PendingRemindersCount { count } => {
                 Self::PendingRemindersCount(count)
             }
+            hive_sh4re::ManagerResponse::Whoami {
+                name,
+                role,
+                operator_pronouns,
+                hyperhive_rev,
+            } => Self::Whoami {
+                name,
+                role,
+                operator_pronouns,
+                hyperhive_rev,
+            },
         }
     }
 }
@@ -156,6 +184,28 @@ pub fn format_open_threads(resp: Result<SocketReply, anyhow::Error>) -> String {
     out
 }
 
+/// Format helper for `whoami`: renders the identity block as a short
+/// human-readable string. Skips fields that are `None` so the output
+/// doesn't carry dead placeholders.
+pub fn format_whoami(resp: Result<SocketReply, anyhow::Error>) -> String {
+    match resp {
+        Ok(SocketReply::Whoami {
+            name,
+            role,
+            operator_pronouns,
+            hyperhive_rev,
+        }) => {
+            let rev = hyperhive_rev.as_deref().unwrap_or("<unknown>");
+            format!(
+                "name: {name}\nrole: {role}\noperator_pronouns: {operator_pronouns}\nhyperhive_rev: {rev}"
+            )
+        }
+        Ok(SocketReply::Err(m)) => format!("whoami failed: {m}"),
+        Ok(other) => format!("whoami unexpected response: {other:?}"),
+        Err(e) => format!("whoami transport error: {e:#}"),
+    }
+}
+
 /// Common envelope around every MCP tool handler: pre-log → run →
 /// post-log. The inbox-status hint used to be appended to every tool
 /// result; that lives in the wake prompt + UI header now, so tool
@@ -395,6 +445,22 @@ impl AgentServer {
         .await
     }
 
+    #[tool(
+        description = "Self-introspection: returns your own canonical agent name (the \
+        socket-identity name, NOT the prompt-substituted label), role (`agent`), the \
+        operator's pronouns, and the current hyperhive rev hive-c0re is running against. \
+        No args. Useful when you want a trustworthy identity stamp for state files / \
+        commit messages / cross-agent attribution that won't drift across renames or \
+        session-continue boundaries where the system-prompt label could be stale."
+    )]
+    async fn whoami(&self) -> String {
+        run_tool_envelope("whoami", String::new(), async move {
+            let (resp, retries) = self.dispatch(hive_sh4re::AgentRequest::Whoami).await;
+            annotate_retries(format_whoami(resp), retries)
+        })
+        .await
+    }
+
     #[tool(
         description = "Schedule a reminder that lands in this agent's own inbox at a future \
         time (sender will appear as `reminder`). Use for self-paced follow-ups: 'check task \
@@ -879,6 +945,20 @@ impl ManagerServer {
         .await
     }
 
+    #[tool(
+        description = "Self-introspection for the manager: returns canonical name \
+        (`manager`), role (`manager`), operator pronouns, and the current hyperhive rev. \
+        Same shape as the agent flavour; useful for cross-agent attribution / boot \
+        announcements / state-file headers without trusting prompt substitution."
+    )]
+    async fn whoami(&self) -> String {
+        run_tool_envelope("whoami", String::new(), async move {
+            let (resp, retries) = self.dispatch(hive_sh4re::ManagerRequest::Whoami).await;
+            annotate_retries(format_whoami(resp), retries)
+        })
+        .await
+    }
+
     #[tool(
         description = "Fetch recent journal log lines for a sub-agent container. Useful \
         for diagnosing MCP server registration failures, startup crashes, plugin install \
@@ -923,8 +1003,9 @@ impl ManagerServer {
         sub-agent — non-blocking, answer arrives later as a `question_answered` event), \
         `answer` (respond to a `question_asked` event directed at you), \
         `get_open_threads` (hive-wide loose ends — pending approvals + unanswered \
-        questions across the swarm). The manager's own config lives at \
-        `/agents/hm1nd/config/agent.nix`."
+        questions across the swarm), `whoami` (self-introspection — canonical name, \
+        role, operator pronouns, current hyperhive rev). The manager's own config \
+        lives at `/agents/hm1nd/config/agent.nix`."
 )]
 impl ServerHandler for ManagerServer {}
 
@@ -958,7 +1039,15 @@ pub enum Flavor {
 #[must_use]
 pub fn allowed_mcp_tools(flavor: Flavor) -> Vec<String> {
     let names: &[&str] = match flavor {
-        Flavor::Agent => &["send", "recv", "ask", "answer", "remind", "get_open_threads"],
+        Flavor::Agent => &[
+            "send",
+            "recv",
+            "ask",
+            "answer",
+            "remind",
+            "get_open_threads",
+            "whoami",
+        ],
         Flavor::Manager => &[
             "send",
             "recv",
@@ -973,6 +1062,7 @@ pub fn allowed_mcp_tools(flavor: Flavor) -> Vec<String> {
             "get_logs",
             "get_open_threads",
             "remind",
+            "whoami",
         ],
     };
     let mut out: Vec<String> = names