diff --git a/docs/channels/discord.md b/docs/channels/discord.md
index 5f789a382a6..d725b5c2edd 100644
--- a/docs/channels/discord.md
+++ b/docs/channels/discord.md
@@ -627,6 +627,49 @@ Default slash command settings:
+
+ Discord can bind a thread to a session target so follow-up messages in that thread keep routing to the same session (including subagent sessions).
+
+ Commands:
+
+ - `/focus ` bind current/new thread to a subagent/session target
+ - `/unfocus` remove current thread binding
+ - `/agents` show active runs and binding state
+ - `/session ttl ` inspect/update auto-unfocus TTL for focused bindings
+
+ Config:
+
+```json5
+{
+ session: {
+ threadBindings: {
+ enabled: true,
+ ttlHours: 24,
+ },
+ },
+ channels: {
+ discord: {
+ threadBindings: {
+ enabled: true,
+ ttlHours: 24,
+ spawnSubagentSessions: false, // opt-in
+ },
+ },
+ },
+}
+```
+
+ Notes:
+
+ - `session.threadBindings.*` sets global defaults.
+ - `channels.discord.threadBindings.*` overrides Discord behavior.
+ - `spawnSubagentSessions` must be true to auto-create/bind threads for `sessions_spawn({ thread: true })`.
+ - If thread bindings are disabled for an account, `/focus` and related thread binding operations are unavailable.
+
+ See [Sub-agents](/tools/subagents) and [Configuration Reference](/gateway/configuration-reference).
+
+
+
Per-guild reaction notification mode:
diff --git a/docs/concepts/session-tool.md b/docs/concepts/session-tool.md
index b44d892be54..ebac95dbe55 100644
--- a/docs/concepts/session-tool.md
+++ b/docs/concepts/session-tool.md
@@ -151,7 +151,10 @@ Parameters:
- `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)
+- `thinking?` (optional; overrides thinking level for the sub-agent run)
- `runTimeoutSeconds?` (default 0; when set, aborts the sub-agent run after N seconds)
+- `thread?` (default false; request thread-bound routing for this spawn when supported by the channel/plugin)
+- `mode?` (`run|session`; defaults to `run`, but defaults to `session` when `thread=true`; `mode="session"` requires `thread=true`)
- `cleanup?` (`delete|keep`, default `keep`)
Allowlist:
@@ -168,6 +171,7 @@ Behavior:
- 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.
+- With `thread=true`, channel plugins can bind delivery/routing to a thread target (Discord support is controlled by `session.threadBindings.*` and `channels.discord.threadBindings.*`).
- After completion, OpenClaw runs a sub-agent **announce step** and posts the result to the requester chat channel.
- If the assistant final reply is empty, the latest `toolResult` from sub-agent history is included as `Result`.
- Reply exactly `ANNOUNCE_SKIP` during the announce step to stay silent.
diff --git a/docs/experiments/plans/thread-bound-subagents.md b/docs/experiments/plans/thread-bound-subagents.md
deleted file mode 100644
index 8663ab55efc..00000000000
--- a/docs/experiments/plans/thread-bound-subagents.md
+++ /dev/null
@@ -1,338 +0,0 @@
----
-summary: "Discord thread bound subagent sessions with plugin lifecycle hooks, routing, and config kill switches"
-owner: "onutc"
-status: "implemented"
-last_updated: "2026-02-21"
-title: "Thread Bound Subagents"
----
-
-# Thread Bound Subagents
-
-## Overview
-
-This feature lets users interact with spawned subagents directly inside Discord threads.
-
-Instead of only waiting for a completion summary in the parent session, users can move into a dedicated thread that routes messages to the spawned subagent session. Replies are sent in-thread with a thread bound persona.
-
-The implementation is split between channel agnostic core lifecycle hooks and Discord specific extension behavior.
-
-## Goals
-
-- Allow direct thread conversation with a spawned subagent session.
-- Keep default subagent orchestration channel agnostic.
-- Support both automatic thread creation on spawn and manual focus controls.
-- Provide predictable cleanup on completion, kill, timeout, and thread lifecycle changes.
-- Keep behavior configurable with global defaults plus channel and account overrides.
-
-## Out of scope
-
-- New ACP protocol features.
-- Non Discord thread binding implementations in this document.
-- New bot accounts or app level Discord identity changes.
-
-## What shipped
-
-- `sessions_spawn` supports `thread: true` and `mode: "run" | "session"`.
-- Spawn flow supports persistent thread bound sessions.
-- Discord thread binding manager supports bind, unbind, TTL sweep, and persistence.
-- Plugin hook lifecycle for subagents:
- - `subagent_spawning`
- - `subagent_spawned`
- - `subagent_delivery_target`
- - `subagent_ended`
-- Discord extension implements thread auto bind, delivery target override, and unbind on end.
-- Text commands for manual control:
- - `/focus`
- - `/unfocus`
- - `/agents`
- - `/session ttl`
-- Global and Discord scoped enablement and TTL controls, including a global kill switch.
-
-## Core concepts
-
-### Spawn modes
-
-- `mode: "run"`
- - one task lifecycle
- - completion announcement flow
-- `mode: "session"`
- - persistent thread bound session
- - supports follow up user messages in thread
-
-Default mode behavior:
-
-- if `thread: true` and mode omitted, mode defaults to `"session"`
-- otherwise mode defaults to `"run"`
-
-Constraint:
-
-- `mode: "session"` requires `thread: true`
-
-### Thread binding target model
-
-Bindings are generic targets, not only subagents.
-
-- `targetKind: "subagent" | "acp"`
-- `targetSessionKey: string`
-
-This allows the same routing primitive to support ACP/session bindings as well.
-
-### Thread binding manager
-
-The manager is responsible for:
-
-- binding or creating threads for a session target
-- unbinding by thread or by target session
-- managing webhook reuse and recent unbound webhook echo suppression
-- TTL based unbind and stale thread cleanup
-- persistence load and save
-
-## Architecture
-
-### Core and extension boundary
-
-Core (`src/agents/*`) does not directly depend on Discord routing internals.
-
-Core emits lifecycle intent through plugin hooks.
-
-Discord extension (`extensions/discord/src/subagent-hooks.ts`) implements Discord specific behavior:
-
-- pre spawn thread bind preparation
-- completion delivery target override to bound thread
-- unbind on subagent end
-
-### Plugin hook flow
-
-1. `subagent_spawning`
- - before run starts
- - can block spawn with `status: "error"`
- - used to prepare thread binding when `thread: true`
-2. `subagent_spawned`
- - post run registration event
-3. `subagent_delivery_target`
- - completion routing override hook
- - can redirect completion delivery to bound Discord thread origin
-4. `subagent_ended`
- - cleanup and unbind signal
-
-### Account ID normalization contract
-
-Thread binding and routing state must use one canonical account id abstraction.
-
-Specification:
-
-- Introduce a shared account id module (proposed: `src/routing/account-id.ts`) and stop defining local normalizers.
-- Expose two explicit helpers:
- - `normalizeAccountId(value): string`
- - returns canonical, defaulted id (current default is `default`)
- - use for map keys, manager registration and lookup, persistence keys, routing keys
- - `normalizeOptionalAccountId(value): string | undefined`
- - returns canonical id when present, `undefined` when absent
- - use for inbound optional context fields and merge logic
-- Do not implement ad hoc account normalization in feature modules.
- - This includes `trim`, `toLowerCase`, or defaulting logic in local helper functions.
-- Any map keyed by account id must only accept canonical ids from shared helpers.
-- Hook payloads and delivery context should carry raw optional account ids, and normalize at module boundaries only.
-
-Migration guardrails:
-
-- Replace duplicate normalizers in routing, reply payload, command context, and provider helpers with shared helpers.
-- Add contract tests that assert identical normalization behavior across:
- - route resolution
- - thread binding manager lookup
- - reply delivery target filtering
- - command run context merge
-
-### Persistence and state
-
-Binding state path:
-
-- `${stateDir}/discord/thread-bindings.json`
-
-Record shape contains:
-
-- account, channel, thread
-- target kind and target session key
-- agent label metadata
-- webhook id/token
-- boundBy, boundAt, expiresAt
-
-State is stored on `globalThis` to keep one shared registry across ESM and Jiti loader paths.
-
-## Configuration
-
-### Effective precedence
-
-For Discord thread binding options, account override wins, then channel, then global session default, then built in fallback.
-
-- account: `channels.discord.accounts..threadBindings.`
-- channel: `channels.discord.threadBindings.`
-- global: `session.threadBindings.`
-
-### Keys
-
-| Key | Scope | Default | Notes |
-| ------------------------------------------------------- | --------------- | --------------- | ----------------------------------------- |
-| `session.threadBindings.enabled` | global | `true` | master default kill switch |
-| `session.threadBindings.ttlHours` | global | `24` | default auto unfocus TTL |
-| `channels.discord.threadBindings.enabled` | channel/account | inherits global | Discord override kill switch |
-| `channels.discord.threadBindings.ttlHours` | channel/account | inherits global | Discord TTL override |
-| `channels.discord.threadBindings.spawnSubagentSessions` | channel/account | `false` | opt in for `thread: true` spawn auto bind |
-
-### Runtime effect of enable switch
-
-When effective `enabled` is false for a Discord account:
-
-- provider creates a noop thread binding manager for runtime wiring
-- no real manager is registered for lookup by account id
-- inbound bound thread routing is effectively disabled
-- completion routing overrides do not resolve bound thread origins
-- `/focus`, `/unfocus`, and thread binding specific operations report unavailable
-- `thread: true` spawn path returns actionable error from Discord hook layer
-
-## Flow and behavior
-
-### Spawn with `thread: true`
-
-1. Spawn validates mode and permissions.
-2. `subagent_spawning` hook runs.
-3. Discord extension checks effective flags:
- - thread bindings enabled
- - `spawnSubagentSessions` enabled
-4. Extension attempts auto bind and thread creation.
-5. If bind fails:
- - spawn returns error
- - provisional child session is deleted
-6. If bind succeeds:
- - child run starts
- - run is registered with spawn mode
-
-### Manual focus and unfocus
-
-- `/focus `
- - Discord only
- - resolves subagent or session target
- - binds current or created thread to target session
-- `/unfocus`
- - Discord thread only
- - unbinds current thread
-
-### Inbound routing
-
-- Discord preflight checks current thread id against thread binding manager.
-- If bound, effective session routing uses bound target session key.
-- If not bound, normal routing path is used.
-
-### Outbound routing
-
-- Reply delivery checks whether current session has thread bindings.
-- Bound sessions deliver to thread via webhook aware path.
-- Unbound sessions use normal bot delivery.
-
-### Completion routing
-
-- Core completion flow calls `subagent_delivery_target`.
-- Discord extension returns bound thread origin when it can resolve one.
-- Core merges hook origin with requester origin and delivers completion.
-
-### Cleanup
-
-Cleanup occurs on:
-
-- completion
-- error or timeout completion path
-- kill and terminate paths
-- TTL expiration
-- archived or deleted thread probes
-- manual `/unfocus`
-
-Cleanup behavior includes unbind and optional farewell messaging.
-
-## Commands and user UX
-
-| Command | Purpose |
-| ---------------------------------------------------------- | -------------------------------------------------------------------- | ------------------------------------- | --------------- | ------------------------------------------- |
-| `/subagents spawn [--model] [--thinking]` | spawn subagent; may be thread bound when `thread: true` path is used |
-| `/focus ` | manually bind thread to subagent or session |
-| `/unfocus` | remove binding from current thread |
-| `/agents` | list active agents and binding state |
-| `/session ttl ` | update TTL for focused thread binding |
-
-Notes:
-
-- `/session ttl` is currently Discord thread focused behavior.
-- Thread intro and farewell text are generated by thread binding message helpers.
-
-## Failure handling and safety
-
-- Spawn returns explicit errors when thread binding cannot be prepared.
-- Spawn failure after provisional bind attempts best effort unbind and session delete.
-- Completion logic prevents duplicate ended hook emission.
-- Retry and expiry guards prevent infinite completion announce retry loops.
-- Webhook echo suppression avoids unbound webhook messages being reprocessed as inbound turns.
-
-## Module map
-
-### Core orchestration
-
-- `src/agents/subagent-spawn.ts`
-- `src/agents/subagent-announce.ts`
-- `src/agents/subagent-registry.ts`
-- `src/agents/subagent-registry-cleanup.ts`
-- `src/agents/subagent-registry-completion.ts`
-
-### Discord runtime
-
-- `src/discord/monitor/provider.ts`
-- `src/discord/monitor/thread-bindings.manager.ts`
-- `src/discord/monitor/thread-bindings.state.ts`
-- `src/discord/monitor/thread-bindings.lifecycle.ts`
-- `src/discord/monitor/thread-bindings.messages.ts`
-- `src/discord/monitor/message-handler.preflight.ts`
-- `src/discord/monitor/message-handler.process.ts`
-- `src/discord/monitor/reply-delivery.ts`
-
-### Plugin hooks and extension
-
-- `src/plugins/types.ts`
-- `src/plugins/hooks.ts`
-- `extensions/discord/src/subagent-hooks.ts`
-
-### Config and schema
-
-- `src/config/types.base.ts`
-- `src/config/types.discord.ts`
-- `src/config/zod-schema.session.ts`
-- `src/config/zod-schema.providers-core.ts`
-- `src/config/schema.help.ts`
-- `src/config/schema.labels.ts`
-
-## Test coverage highlights
-
-- `extensions/discord/src/subagent-hooks.test.ts`
-- `src/discord/monitor/thread-bindings.ttl.test.ts`
-- `src/discord/monitor/thread-bindings.shared-state.test.ts`
-- `src/discord/monitor/reply-delivery.test.ts`
-- `src/discord/monitor/message-handler.preflight.test.ts`
-- `src/discord/monitor/message-handler.process.test.ts`
-- `src/auto-reply/reply/commands-subagents-focus.test.ts`
-- `src/auto-reply/reply/commands-session-ttl.test.ts`
-- `src/agents/subagent-registry.steer-restart.test.ts`
-- `src/agents/subagent-registry-completion.test.ts`
-
-## Operational summary
-
-- Use `session.threadBindings.enabled` as the global kill switch default.
-- Use `channels.discord.threadBindings.enabled` and account overrides for selective enablement.
-- Keep `spawnSubagentSessions` opt in for thread auto spawn behavior.
-- Use TTL settings for automatic unfocus policy control.
-
-This model keeps subagent lifecycle orchestration generic while giving Discord a full thread bound interaction path.
-
-## Related plan
-
-For channel agnostic SessionBinding architecture and scoped iteration planning, see:
-
-- `docs/experiments/plans/session-binding-channel-agnostic.md`
-
-ACP remains a next step in that plan and is intentionally not implemented in this shipped Discord thread-bound flow.
diff --git a/docs/gateway/configuration-reference.md b/docs/gateway/configuration-reference.md
index 3f25baf6380..b11ea7a37aa 100644
--- a/docs/gateway/configuration-reference.md
+++ b/docs/gateway/configuration-reference.md
@@ -235,6 +235,11 @@ WhatsApp runs through the gateway's web channel (Baileys Web). It starts automat
accentColor: "#5865F2",
},
},
+ threadBindings: {
+ enabled: true,
+ ttlHours: 24,
+ spawnSubagentSessions: false, // opt-in for sessions_spawn({ thread: true })
+ },
voice: {
enabled: true,
autoJoin: [
@@ -264,6 +269,10 @@ WhatsApp runs through the gateway's web channel (Baileys Web). It starts automat
- Guild slugs are lowercase with spaces replaced by `-`; channel keys use the slugged name (no `#`). Prefer guild IDs.
- Bot-authored messages are ignored by default. `allowBots: true` enables them (own messages still filtered).
- `maxLinesPerMessage` (default 17) splits tall messages even when under 2000 chars.
+- `channels.discord.threadBindings` controls Discord thread-bound routing:
+ - `enabled`: Discord override for thread-bound session features (`/focus`, `/unfocus`, `/agents`, `/session ttl`, and bound delivery/routing)
+ - `ttlHours`: Discord override for auto-unfocus TTL (`0` disables)
+ - `spawnSubagentSessions`: opt-in switch for `sessions_spawn({ thread: true })` auto thread creation/binding
- `channels.discord.ui.components.accentColor` sets the accent color for Discord components v2 containers.
- `channels.discord.voice` enables Discord voice channel conversations and optional auto-join + TTS overrides.
- `channels.discord.streaming` is the canonical stream mode key. Legacy `streamMode` and boolean `streaming` values are auto-migrated.
@@ -1222,6 +1231,10 @@ See [Multi-Agent Sandbox & Tools](/tools/multi-agent-sandbox-tools) for preceden
maxEntries: 500,
rotateBytes: "10mb",
},
+ threadBindings: {
+ enabled: true,
+ ttlHours: 24, // default auto-unfocus TTL for thread-bound sessions (0 disables)
+ },
mainKey: "main", // legacy (runtime always uses "main")
agentToAgent: { maxPingPongTurns: 5 },
sendPolicy: {
@@ -1245,6 +1258,9 @@ See [Multi-Agent Sandbox & Tools](/tools/multi-agent-sandbox-tools) for preceden
- **`mainKey`**: legacy field. Runtime now always uses `"main"` for the main direct-chat bucket.
- **`sendPolicy`**: match by `channel`, `chatType` (`direct|group|channel`, with legacy `dm` alias), `keyPrefix`, or `rawKeyPrefix`. First deny wins.
- **`maintenance`**: `warn` warns the active session on eviction; `enforce` applies pruning and rotation.
+- **`threadBindings`**: global defaults for thread-bound session features.
+ - `enabled`: master default switch (providers can override; Discord uses `channels.discord.threadBindings.enabled`)
+ - `ttlHours`: default auto-unfocus TTL in hours (`0` disables; providers can override)
diff --git a/docs/gateway/configuration.md b/docs/gateway/configuration.md
index bdc1d5b1a85..e367b4caf0d 100644
--- a/docs/gateway/configuration.md
+++ b/docs/gateway/configuration.md
@@ -182,6 +182,10 @@ When validation fails:
{
session: {
dmScope: "per-channel-peer", // recommended for multi-user
+ threadBindings: {
+ enabled: true,
+ ttlHours: 24,
+ },
reset: {
mode: "daily",
atHour: 4,
@@ -192,6 +196,7 @@ When validation fails:
```
- `dmScope`: `main` (shared) | `per-peer` | `per-channel-peer` | `per-account-channel-peer`
+ - `threadBindings`: global defaults for thread-bound session routing (Discord supports `/focus`, `/unfocus`, `/agents`, and `/session ttl`).
- See [Session Management](/concepts/session) for scoping, identity links, and send policy.
- See [full reference](/gateway/configuration-reference#session) for all fields.
diff --git a/docs/help/faq.md b/docs/help/faq.md
index 5b19415165b..e60329e86c6 100644
--- a/docs/help/faq.md
+++ b/docs/help/faq.md
@@ -1038,6 +1038,26 @@ cheaper model for sub-agents via `agents.defaults.subagents.model`.
Docs: [Sub-agents](/tools/subagents).
+### How do thread-bound subagent sessions work on Discord
+
+Use thread bindings. You can bind a Discord thread to a subagent or session target so follow-up messages in that thread stay on that bound session.
+
+Basic flow:
+
+- Spawn with `sessions_spawn` using `thread: true` (and optionally `mode: "session"` for persistent follow-up).
+- Or manually bind with `/focus `.
+- Use `/agents` to inspect binding state.
+- Use `/session ttl ` to control auto-unfocus.
+- Use `/unfocus` to detach the thread.
+
+Required config:
+
+- Global defaults: `session.threadBindings.enabled`, `session.threadBindings.ttlHours`.
+- Discord overrides: `channels.discord.threadBindings.enabled`, `channels.discord.threadBindings.ttlHours`.
+- Auto-bind on spawn: set `channels.discord.threadBindings.spawnSubagentSessions: true`.
+
+Docs: [Sub-agents](/tools/subagents), [Discord](/channels/discord), [Configuration Reference](/gateway/configuration-reference), [Slash commands](/tools/slash-commands).
+
### Cron or reminders do not fire What should I check
Cron runs inside the Gateway process. If the Gateway is not running continuously,
diff --git a/docs/tools/index.md b/docs/tools/index.md
index 85405633096..88b2ee6bccd 100644
--- a/docs/tools/index.md
+++ b/docs/tools/index.md
@@ -464,7 +464,7 @@ Core parameters:
- `sessions_list`: `kinds?`, `limit?`, `activeMinutes?`, `messageLimit?` (0 = none)
- `sessions_history`: `sessionKey` (or `sessionId`), `limit?`, `includeTools?`
- `sessions_send`: `sessionKey` (or `sessionId`), `message`, `timeoutSeconds?` (0 = fire-and-forget)
-- `sessions_spawn`: `task`, `label?`, `agentId?`, `model?`, `runTimeoutSeconds?`, `cleanup?`
+- `sessions_spawn`: `task`, `label?`, `agentId?`, `model?`, `thinking?`, `runTimeoutSeconds?`, `thread?`, `mode?`, `cleanup?`
- `session_status`: `sessionKey?` (default current; accepts `sessionId`), `model?` (`default` clears override)
Notes:
@@ -475,6 +475,10 @@ Notes:
- `sessions_send` waits for final completion when `timeoutSeconds > 0`.
- Delivery/announce happens after completion and is best-effort; `status: "ok"` confirms the agent run finished, not that the announce was delivered.
- `sessions_spawn` starts a sub-agent run and posts an announce reply back to the requester chat.
+ - Supports one-shot mode (`mode: "run"`) and persistent thread-bound mode (`mode: "session"` with `thread: true`).
+ - If `thread: true` and `mode` is omitted, mode defaults to `session`.
+ - `mode: "session"` requires `thread: true`.
+ - Discord thread-bound flows depend on `session.threadBindings.*` and `channels.discord.threadBindings.*`.
- Reply format includes `Status`, `Result`, and compact stats.
- `Result` is the assistant completion text; if missing, the latest `toolResult` is used as fallback.
- Manual completion-mode spawns send directly first, with queue fallback and retry on transient failures (`status: "ok"` means run finished, not that announce delivered).
diff --git a/docs/tools/slash-commands.md b/docs/tools/slash-commands.md
index 4d58fb5a437..7d9bb616642 100644
--- a/docs/tools/slash-commands.md
+++ b/docs/tools/slash-commands.md
@@ -124,6 +124,7 @@ Notes:
- `/usage` controls the per-response usage footer; `/usage cost` prints a local cost summary from OpenClaw session logs.
- `/restart` is enabled by default; set `commands.restart: false` to disable it.
- Discord-only native command: `/vc join|leave|status` controls voice channels (requires `channels.discord.voice` and native commands; not available as text).
+- Discord thread-binding commands (`/focus`, `/unfocus`, `/agents`, `/session ttl`) require effective thread bindings to be enabled (`session.threadBindings.enabled` and/or `channels.discord.threadBindings.enabled`).
- `/verbose` is meant for debugging and extra visibility; keep it **off** in normal use.
- `/reasoning` (and `/verbose`) are risky in group settings: they may reveal internal reasoning or tool output you did not intend to expose. Prefer leaving them off, especially in group chats.
- **Fast path:** command-only messages from allowlisted senders are handled immediately (bypass queue + model).
diff --git a/docs/tools/subagents.md b/docs/tools/subagents.md
index 3022d551921..5c2549e4426 100644
--- a/docs/tools/subagents.md
+++ b/docs/tools/subagents.md
@@ -3,6 +3,7 @@ summary: "Sub-agents: spawning isolated agent runs that announce results back to
read_when:
- You want background/parallel work via the agent
- You are changing sessions_spawn or sub-agent tool policy
+ - You are implementing or troubleshooting thread-bound subagent sessions
title: "Sub-Agents"
---
@@ -22,6 +23,13 @@ Use `/subagents` to inspect or control sub-agent runs for the **current session*
- `/subagents steer `
- `/subagents spawn [--model ] [--thinking ]`
+Discord thread binding controls:
+
+- `/focus `
+- `/unfocus`
+- `/agents`
+- `/session ttl `
+
`/subagents info` shows run metadata (status, timestamps, session id, transcript path, cleanup).
### Spawn behavior
@@ -40,6 +48,7 @@ Use `/subagents` to inspect or control sub-agent runs for the **current session*
- compact runtime/token stats
- `--model` and `--thinking` override defaults for that specific run.
- Use `info`/`log` to inspect details and output after completion.
+- `/subagents spawn` is one-shot mode (`mode: "run"`). For persistent thread-bound sessions, use `sessions_spawn` with `thread: true` and `mode: "session"`.
Primary goals:
@@ -69,8 +78,40 @@ Tool params:
- `model?` (optional; overrides the sub-agent model; invalid values are skipped and the sub-agent runs on the default model with a warning in the tool result)
- `thinking?` (optional; overrides thinking level for the sub-agent run)
- `runTimeoutSeconds?` (default `0`; when set, the sub-agent run is aborted after N seconds)
+- `thread?` (default `false`; when `true`, requests channel thread binding for this sub-agent session)
+- `mode?` (`run|session`)
+ - default is `run`
+ - if `thread: true` and `mode` omitted, default becomes `session`
+ - `mode: "session"` requires `thread: true`
- `cleanup?` (`delete|keep`, default `keep`)
+## Discord thread-bound sessions
+
+When thread bindings are enabled, a sub-agent can stay bound to a Discord thread so follow-up user messages in that thread keep routing to the same sub-agent session.
+
+Quick flow:
+
+1. Spawn with `sessions_spawn` using `thread: true` (and optionally `mode: "session"`).
+2. OpenClaw creates or binds a Discord thread to that session target.
+3. Replies and follow-up messages in that thread route to the bound session.
+4. Use `/session ttl` to inspect/update auto-unfocus TTL.
+5. Use `/unfocus` to detach manually.
+
+Manual controls:
+
+- `/focus ` binds the current thread (or creates one) to a sub-agent/session target.
+- `/unfocus` removes the binding for the current Discord thread.
+- `/agents` lists active runs and binding state (`thread:` or `unbound`).
+- `/session ttl` only works for focused Discord threads.
+
+Config switches:
+
+- Global default: `session.threadBindings.enabled`, `session.threadBindings.ttlHours`
+- Discord override: `channels.discord.threadBindings.enabled`, `channels.discord.threadBindings.ttlHours`
+- Spawn auto-bind opt-in: `channels.discord.threadBindings.spawnSubagentSessions`
+
+See [Discord](/channels/discord), [Configuration Reference](/gateway/configuration-reference), and [Slash commands](/tools/slash-commands).
+
Allowlist:
- `agents.list[].subagents.allowAgents`: list of agent ids that can be targeted via `agentId` (`["*"]` to allow any). Default: only the requester agent.