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Session Tools

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Tool Names

• sessions_list
• sessions_history
• sessions_send
• sessions_spawn

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Key Model

• Main direct chat bucket is always the literal key "main" (resolved to the current agent’s main key).
• Group chats use agent:<agentId>:<channel>:group:<id> or agent:<agentId>:<channel>:channel:<id> (pass the full key).
• Cron jobs use cron:<job.id>.
• Hooks use hook:<uuid> unless explicitly set.
• Node sessions use node-<nodeId> unless explicitly set.

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sessions_list

• kinds?: string[] filter: any of "main" | "group" | "cron" | "hook" | "node" | "other"
• limit?: number max rows (default: server default, clamp e.g. 200)
• activeMinutes?: number only sessions updated within N minutes
• messageLimit?: number 0 = no messages (default 0); >0 = include last N messages

• messageLimit > 0 fetches chat.history per session and includes the last N messages.
• Tool results are filtered out in list output; use sessions_history for tool messages.
• When running in a sandboxed agent session, session tools default to spawned-only visibility (see below).

• key: session key (string)
• kind: main | group | cron | hook | node | other
• channel: whatsapp | telegram | discord | signal | imessage | webchat | internal | unknown
• displayName (group display label if available)
• updatedAt (ms)
• sessionId
• model, contextTokens, totalTokens
• thinkingLevel, verboseLevel, systemSent, abortedLastRun
• sendPolicy (session override if set)
• lastChannel, lastTo
• deliveryContext (normalized { channel, to, accountId } when available)
• transcriptPath (best-effort path derived from store dir + sessionId)
• messages? (only when messageLimit > 0)

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sessions_history

• sessionKey (required; accepts session key or sessionId from sessions_list)
• limit?: number max messages (server clamps)
• includeTools?: boolean (default false)

• includeTools=false filters role: "toolResult" messages.
• Returns messages array in the raw transcript format.
• When given a sessionId, OpenClaw resolves it to the corresponding session key (missing ids error).

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sessions_send

• sessionKey (required; accepts session key or sessionId from sessions_list)
• message (required)
• timeoutSeconds?: number (default >0; 0 = fire-and-forget)

• timeoutSeconds = 0: enqueue and return { runId, status: "accepted" }.
• timeoutSeconds > 0: wait up to N seconds for completion, then return { runId, status: "ok", reply }.
• If wait times out: { runId, status: "timeout", error }. Run continues; call sessions_history later.
• If the run fails: { runId, status: "error", error }.
• Announce delivery runs after the primary run completes and is best-effort; status: "ok" does not guarantee the announce was delivered.
• Waits via gateway agent.wait (server-side) so reconnects don’t drop the wait.
• Agent-to-agent message context is injected for the primary run.
• After the primary run completes, OpenClaw runs a reply-back loop:
  • Round 2+ alternates between requester and target agents.
  • Reply exactly REPLY_SKIP to stop the ping‑pong.
  • Max turns is session.agentToAgent.maxPingPongTurns (0–5, default 5).
• Once the loop ends, OpenClaw runs the agent‑to‑agent announce step (target agent only):
  • Reply exactly ANNOUNCE_SKIP to stay silent.
  • Any other reply is sent to the target channel.
  • Announce step includes the original request + round‑1 reply + latest ping‑pong reply.

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Channel Field

• For groups, channel is the channel recorded on the session entry.
• For direct chats, channel maps from lastChannel.
• For cron/hook/node, channel is internal.
• If missing, channel is unknown.

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Security / Send Policy

{
  "session": {
    "sendPolicy": {
      "rules": [
        {
          "match": { "channel": "discord", "chatType": "group" },
          "action": "deny"
        }
      ],
      "default": "allow"
    }
  }
}

• sendPolicy: "allow" | "deny" (unset = inherit config)
• Settable via sessions.patch or owner-only /send on|off|inherit (standalone message).

• chat.send / agent (gateway)
• auto-reply delivery logic

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sessions_spawn

• task (required)
• label? (optional; used for logs/UI)
• agentId? (optional; spawn under another agent id if allowed)
• model? (optional; overrides the sub-agent model; invalid values error)
• runTimeoutSeconds? (default 0; when set, aborts the sub-agent run after N seconds)
• cleanup? (delete|keep, default keep)

• agents.list[].subagents.allowAgents: list of agent ids allowed via agentId (["*"] to allow any). Default: only the requester agent.

• Use agents_list to discover which agent ids are allowed for sessions_spawn.

• Starts a new agent:<agentId>:subagent:<uuid> session with deliver: false.
• Sub-agents default to the full tool set minus session tools (configurable via tools.subagents.tools).
• Sub-agents are not allowed to call sessions_spawn (no sub-agent → sub-agent spawning).
• Always non-blocking: returns { status: "accepted", runId, childSessionKey } immediately.
• After completion, OpenClaw runs a sub-agent announce step and posts the result to the requester chat channel.
• Reply exactly ANNOUNCE_SKIP during the announce step to stay silent.
• Announce replies are normalized to Status/Result/Notes; Status comes from runtime outcome (not model text).
• Sub-agent sessions are auto-archived after agents.defaults.subagents.archiveAfterMinutes (default: 60).
• Announce replies include a stats line (runtime, tokens, sessionKey/sessionId, transcript path, and optional cost).

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Sandbox Session Visibility

{
  agents: {
    defaults: {
      sandbox: {
        // default: "spawned"
        sessionToolsVisibility: "spawned", // or "all"
      },
    },
  },
}