mara on #5170: "dont split caps and perms. its all perms. / dont include
the now empty tool groups / nothing set -> default / also add perms to
agent creation screen".
- hive-sh4re: one `Permission` enum (messaging, meta, inbox, execution,
web_tools, manage_root_agent) replaces `ToolGroup` and `Capability`;
`lifecycle`/`forge` are gone. `Permission::default_for` is the default
for an agent the swarm sets nothing for.
- The record is `{ "permissions": [...] }`. Missing key, unset field or
no successful read yet = default; `[]` = none; a failed read after a
good one keeps the last value.
- hive-agent reads its own key every 10s and builds each turn's --tools,
--allowedTools and MCP config (rewritten before every turn) from it;
the subagent daemon reads it on each start/continue. Agents get a
read-only grant on their own key.
- hive-c0re restarts an agent only when its manage_root_agent changes.
The import now merges meta/capabilities.json and meta/tool-groups.json
into one list per agent and deletes both; the "import pending, don't
read" decision is `ImportOutcome::read_allowed`, table-tested.
- swarm-controller: `GET /api/permissions` (names + default) and an
optional `permissions` on `POST /api/agents`, stored before the job is
queued. swarm-ui's create-agent form gets a permissions field.
- Deleted: HIVE_TOOL_GROUPS and its forward to the subagent daemon,
tool_groups.rs, ruth's tool-group seed, the permissions rebuild job
(PermPayload/WritePermFile/perm_change), the dashboard permissions tab
and its stale-entries panel.
Part of #5170.
An agent's capabilities move from the hive's meta repo
(`meta/capabilities.json`, injected as `HIVE_CAPABILITIES`) into the
`capabilities` field of its key in a new `agent-permissions` KV bucket,
which swarm-controller alone writes.
- swarm-queue-client: `agent_permissions` (bucket, key, `AgentPermissions`,
direct-get read, the import subject and its wire types).
- swarm-controller: creates the bucket at start; `GET|PUT|DELETE
/api/agents/{name}/permissions` (deny_unknown_fields and unknown
capability ⇒ 422, duplicate ⇒ 400, agent must be declared by a hive);
answers each hive's one-shot import, writing a key only where there is
none and only for agents that hive's wanted state declares.
- swarmctl: `agent permissions get|set|clear`.
- swarm-nats-auth: a hive reads every key of the bucket and sends its
import on its own subject; the controller subscribes to the imports and
may answer them (`responses`).
- hive-c0re: reads each of its agents' keys every 30s into
/var/lib/hyperhive/swarm-agent-permissions.json and restarts an agent,
gracefully, when its capabilities change. Unset is the compiled-in
default (ruth: manage_root_agent; everyone else: none). A failed read
keeps the stored value. On first boot it seeds that file from
meta/capabilities.json, sends the grants to the controller, and deletes
the file once the controller answers.
Deleted: the capabilities.json reader/writer, `HIVE_CAPABILITIES` in the
rendered meta flake, ruth's capability seed, the capabilities half of the
permissions rebuild job (`PermPayload::Capabilities`/`Combined`), the
dashboard's capabilities table and `capabilities_changed` event, and the
now-unused `Capability::description`.
Part of #5170.
set_nspawn_flags propagated has_cap's error, so one corrupt
capabilities.json failed every agent's Start, spawn and Swap. It now
goes through holds_manage_root_agent, which logs the error (agent and
file) and treats the capability as absent: the agent starts without the
cross-agent, /applied and /meta mounts. caps_for/has_cap take the file
path so that seam is testable against a tempfile.
- meta.rs: a comment at the render_flake reads records why they
propagate (an empty tool-groups map renders toolGroups = null, i.e.
AGENT_DEFAULT, which fails open for narrower explicit entries).
- capabilities::read doc: states when set_caps/remove_agent rewrite
the file instead of saying remove_agent repairs it.
- set/remove corrupt-file tests assert ErrorKind::InvalidData.
tool_groups::read and capabilities::read returned an empty map when
their file existed but didn't parse. Every set_*/remove_agent is a
read-modify-write, and write() rewrote the file in place, so a crash or
ENOSPC mid-write left a truncated file, and the next write (e.g. the
manager-spawn seed of ruth's tool groups) replaced it with a map holding
only one agent. The scheduling and approval gates then denied every
other agent, recoverable only from meta git history.
- Both registries now read through agent_config::read_map: a missing
file is still the empty map, any other read failure or a parse
failure is an io::Error. set_groups / set_caps / remove_agent fail
without writing.
- Writes go through agent_config::write_map: temp file in the same
directory, fsync, rename, fsync the directory. hive-c0re had no
shared atomic-write helper (the existing tmp+rename sites are inline
and don't fsync).
- Callers of read / groups_for / has_cap now handle the error:
* dashboard GET /api/tool-groups, /api/capabilities,
/api/permissions/stale return 500 instead of an empty table;
* the SSE permission snapshots are skipped with a warn;
* render_flake returns Result, so sync_agents fails instead of
rendering every agent without its tool groups / capabilities;
* set_nspawn_flags propagates has_cap's error;
* the socket tool-group gates deny with the read error as message;
* seed_manager_tool_groups logs and does not seed.
- capabilities::write had no callers left once set_caps writes through
write_map, and is removed.
Closes#4719
swarm-logs covers every host-tier unit this tool could reach, so the
second, capability-gated path into host journald earns nothing and is
removed outright rather than disabled behind a flag.
Removed end to end: the MCP tool definition + handler, the
GetHostJournal/HostJournal wire variants, hive-c0re's
dispatch_host_journal handler, the ReadHostJournal capability, and the
harness-side capability->--allowedTools gate. get_host_journal was the
only capability that mapped to an MCP tool, so allowed_capability_tools
could only ever return an empty vec; it goes too rather than linger as a
function that provably does nothing.
capabilities::has_cap/caps_for stay: #4624 gave ManageRootAgent's
bind-mount enforcement (hive-c0re/src/lifecycle/host_config.rs) a
second caller of has_cap, so they're no longer callerless once this
lands on top of it.
hive-sh4re's journal module (JournalPriority) had no consumer outside
this tool and is deleted.
An existing capabilities.json still naming read_host_journal does not
error: capabilities::prune_unknown drops unrecognised names with a
warn!, and an agent left with no capabilities has its entry removed. No
migration step is needed.
Untouched: hive-c0re/src/dashboard/journal.rs's
read_host_journal_response, which matches the name but is the private
helper behind the operator-only GET /api/journal-host dashboard route
and carries no capability check.
get_loose_ends now always returns the caller's own loose ends, for every
caller including the manager (ruth) — there is no separate manager
surface, ruth is a normal agent with different default capabilities.
- AgentGetLooseEndsArgs removed; get_loose_ends takes no args.
- Wire Request::GetLooseEnds collapses from an Option<String> target to
a unit variant.
- hive-c0re's handle_get_loose_ends drops the "*" hive-wide branch and
the subtree/capability resolver (resolve_agent_state_target); both
are gone since there is no longer a target to resolve.
- loose_ends::hive_wide and Capability::QueryAgentState removed as
dead code — their only callers were the two functions above.
- is_descendant_of is untouched (still used by lifecycle_handlers.rs
and schedules.rs independently of this change).
- Docs updated: docs/turn-loop/mcp.md, docs/web-ui/dashboard.md,
docs/process/conventions.md (Loose-ends wire shape + capabilities
table), plus the doc comments in hive-core-agent-sock, mcp_config.rs
and capabilities.rs that described the old shape.
Refs #4480
Operator ruling: repair belongs on the write path, not the read path.
read() still drops unrecognised names from what it returns (with a
warn!) so a stale name is never honoured, but it no longer writes the
pruned form back — the file heals the next time set_caps()/write() run,
which prune anyway since they're fed a map read() already filtered.
Refs #4474
read() and write() now prune any string in capabilities.json that isn't
a recognised hive_sh4re::permissions::Capability, warn!ing per dropped
entry (naming the agent) and healing the on-disk file so the junk
doesn't survive forever. set_caps() filters incoming names the same
way before ever writing them, so a typo'd or stale grant is dropped
with a warning instead of looking like it took effect.
Refs #4474
