Use Composio from Agent Swarm through the `agent-swarm x composio` CLI route, the `swarm_x` MCP tool, or a registered `ctx.api.composio` script connection. Trigger when a task needs connected third-party app tools such as Gmail, Google Calendar, Google Docs, Google Drive, GitHub, Slack, Notion, or HubSpot through Tool Router sessions, Connect Links, or connected accounts. This is the HUB skill — for Google apps see the sibling skills `composio-gmail`, `composio-google-calendar`, `composio-goo...
Scanned 9/3/2026
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---
name: composio
description: Use Composio from Agent Swarm through the `agent-swarm x composio` CLI route, the `swarm_x` MCP tool, or a registered `ctx.api.composio` script connection. Trigger when a task needs connected third-party app tools such as Gmail, Google Calendar, Google Docs, Google Drive, GitHub, Slack, Notion, or HubSpot through Tool Router sessions, Connect Links, or connected accounts. This is the HUB skill — for Google apps see the sibling skills `composio-gmail`, `composio-google-calendar`, `composio-google-docs`.
---
# Composio
Hub skill for Composio-managed third-party app access from the swarm. Three call
surfaces are available when the deployment has enabled them:
- CLI: `agent-swarm x composio <METHOD> <path> [--body '<json>']`
- MCP: `swarm_x` with `target: "composio"`
- Script connection: `ctx.api.composio.<operationId>(args)` inside a swarm script
`COMPOSIO_API_KEY` is deployment-scoped and injected by the CLI/API process — you
never pass or see it. All paths are **relative** Composio REST paths.
> **Per-app playbooks (verified slugs + argument shapes + gotchas):**
> [[composio-gmail]] · [[composio-google-calendar]] · [[composio-google-docs]].
> Read the sibling skill for the app you're touching — it lists the verified tool
> slugs so you don't have to `/search` blind.
## Core Model
- **`user_id`** is the app user whose connected accounts are used. A deployment
commonly uses the person's **email** as `user_id` (for example,
`<connected-account-email>`). Resolve it with the procedure below. There is **no explicit
"create user" call** — a user is created implicitly the first time you reference
its `user_id` (e.g. when you create a Connect Link). Don't look for a
`POST /users` endpoint; it doesn't exist in this flow.
- **Auth config** (`ac_…`) = a project-level OAuth app config (one per toolkit,
set up in the Composio dashboard). A project can have several.
- **Connected account** (`ca_…`) = a specific user's authorized connection to a
toolkit. Persists across sessions under that `user_id`.
- **Connect Link** = the short-lived URL the user clicks to authorize OAuth.
- **Tool Router session** = a task/conversation runtime context that auto-resolves
the right connected account for a toolkit set. Reuse its `session_id`; create a
new one if the user, toolkit set, auth config, or pinned account changes.
## Resolve the user and connected account
Do this before substituting any `user_id` or `connected_account_id` placeholder:
1. Read the current task details and take its `requestedByUserId`.
2. Call `resolve-user` with `userId: "<requestedByUserId>"`. Inspect the returned
`externalIds` for `kind: "composio"`; that entry's `externalId` is the
Composio `user_id`.
3. List connected accounts filtered by that resolved value:
`GET /connected_accounts?user_id=<resolved-composio-user-id>`. Select the
requested toolkit's `ACTIVE` row and use its `id` as
`connected_account_id`.
4. If the task has no requester, the requester has no Composio identity, or the
filtered result is ambiguous, run `GET /connected_accounts` without a filter
and compare the returned toolkit and user identity fields. If more than one
account is still plausible, ask which identity/account to use. Never guess
from another task's example.
After selecting an account, prove it with a harmless real read; `ACTIVE` status
alone does not prove that its token works.
## Two ways to call a tool — and when to use each
1. **Tool Router session** (`/tool_router/session…`) — best for multi-turn agent
work over a toolkit set. Auto-resolves connections, supports in-session
`/search`. **But** it can fail with `ToolRouterV2_NoActiveConnection` (code
4302) when stale/duplicate accounts shadow the good one (see Gotchas).
2. **Direct execute** (`POST /tools/execute/<TOOL_SLUG>`) — best for one-off reads,
verification, or when the session reports no active connection. Pin the account
explicitly with `connected_account_id`. **This is the reliable path** when a
user has exactly one good connection per toolkit.
```bash
agent-swarm x composio POST /tools/execute/GMAIL_FETCH_EMAILS \
--body '{"user_id":"<connected-account-email>","connected_account_id":"<active-connected-account-id>","arguments":{"max_results":3,"include_payload":false,"verbose":false}}'
```
Resolve both placeholders through **Resolve the user and connected account**
above.
## Script connection surface
`ctx.api.composio` exists only when an enabled script connection with slug
`composio` is registered for the calling agent, repository, or globally. Inspect
`Object.keys(ctx.api ?? {})` before assuming it is present. Use the script
connection listing's generated types or `script-query-types` to discover current
operation IDs and parameter shapes.
```ts
import type { ScriptContext } from "swarm-sdk";
export default async function (args: { userId: string }, ctx: ScriptContext) {
if (!ctx.api?.composio) throw new Error("The composio script connection is not available");
return ctx.api.composio.getV31ConnectedAccounts({
query: { user_ids: [args.userId] },
});
}
```
Generated OpenAPI operations accept only the applicable top-level containers:
`path`, `query`, `header`, and `body`. Put each argument under the container
declared by the generated type. Unknown top-level keys now fail loudly and often
include a nesting hint; fix the call instead of retrying it unchanged.
## Recipe A — Register a user + send Connect Links (one per toolkit)
1. **List the project's auth configs** to get the `ac_…` ids:
```bash
agent-swarm x composio GET "/auth_configs" \
| jq -r '.items[] | "\(.toolkit.slug)\t\(.id)\t\(.name)"'
```
2. **Create one Connect Link per auth config** (flat payload — the user is created
implicitly here):
```bash
agent-swarm x composio POST /connected_accounts/link \
--body '{"auth_config_id":"<auth-config-id>","user_id":"<connected-account-email>"}'
# → returns { redirect_url / connect_url: "https://connect.composio.dev/link/lk_…" }
```
- **Use `/connected_accounts/link`, NOT `POST /connected_accounts`.** The older
path now returns 400 for Composio-managed OAuth configs.
- **There is no single bundled URL** for multiple toolkits — Composio issues
**one link per toolkit**. Send all of them, labelled per app.
3. **Links expire ~10 minutes** after creation (link-start token TTL).
**Regenerate fresh links immediately before posting** to the user, and tell
them the expiry. Offer to regenerate on request.
4. The user clicks each link and authorizes. Connections then show as `ACTIVE`.
## Recipe B — Verify connections / check status
```bash
agent-swarm x composio GET "/connected_accounts?user_id=<connected-account-email>" \
| jq -r '.items[] | "\(.toolkit.slug)\t\(.id)\t\(.status)"'
```
Look for `status: ACTIVE`. Anything `INITIALIZING`/`FAILED`/`EXPIRED` is not
usable. Pin the `ca_…` of the ACTIVE account when calling tools directly.
`ACTIVE` is metadata, not proof that the token works. After connecting or
reconnecting, run a harmless real read for that toolkit and confirm the tool
returns `successful: true` with plausible data.
## Recipe C — Link a Composio connection to a swarm user identity
"Add the composio connection to my user as identity" → `manage-user` with
`action: update` and the `identities` array.
> **CRITICAL: `identities` is declarative (the desired *full* set).** You MUST
> pass every existing externalId PLUS the new one, or the omitted ones get
> removed. First read the current identities (`resolve-user` / get the user),
> then write the full list back.
```jsonc
// manage-user action:update
{
"userId": "<swarm-user-id>",
"identities": [
{ "kind": "github", "externalId": "<existing-github-username>" },
{ "kind": "slack", "externalId": "<slack-user-id>" },
{ "kind": "linear", "externalId": "<existing-linear-identity>" },
{ "kind": "composio", "externalId": "<connected-account-email>" }
]
}
```
Resolve the swarm user and existing identities from the user record first. Resolve
the Slack identity from the task/thread metadata or that user record, and the
Composio identity with the procedure above. Then confirm with
`resolve-user(kind:composio, externalId:"<connected-account-email>")`.
## Workflow (Tool Router session path)
1. Create or reuse a Tool Router session for the user + toolkit set.
2. `/search` before executing — get the current slug, schema, plan, pitfalls,
and connection status. (The sibling skills list verified slugs so you can
often skip the search.)
3. If Composio reports no active connection, run `COMPOSIO_MANAGE_CONNECTIONS`
for the exact toolkit names, share the Connect Link, and pause for auth.
4. Retry only after the toolkit shows an ACTIVE connected account.
5. Prefer metadata-first reads (`include_payload:false`, `verbose:false`) unless
the user explicitly needs bodies/attachments/full records.
6. Paginate on `nextPageToken` / cursors.
```bash
# Create a Gmail-scoped session
agent-swarm x composio POST /tool_router/session \
--body '{"user_id":"<connected-account-email>","toolkits":{"enable":["gmail"]},"workbench":{"enable":false}}'
# Search for the right tool
agent-swarm x composio POST /tool_router/session/$SESSION_ID/search \
--body '{"queries":[{"use_case":"Check recent emails and return metadata only."}]}'
# Connect a toolkit if needed
agent-swarm x composio POST /tool_router/session/$SESSION_ID/execute \
--body '{"tool_slug":"COMPOSIO_MANAGE_CONNECTIONS","arguments":{"toolkits":["gmail"]}}'
```
## Discovering tools for any toolkit
The sibling skills cover the Google apps. For any other toolkit, list its tools:
```bash
agent-swarm x composio GET "/tools?toolkit_slug=<slug>&limit=100" \
| jq -r '.items[] | "\(.slug)\t\(.name)"'
```
Inspect a tool's arguments before calling:
```bash
agent-swarm x composio GET "/tools?toolkit_slug=<slug>&limit=200" \
| jq '.items[] | select(.slug=="<SLUG>") | {required:.input_parameters.required, props:(.input_parameters.properties|keys)}'
```
Google Drive discovery and a metadata-first list follow the same pattern:
```bash
agent-swarm x composio GET "/tools?toolkit_slug=googledrive&limit=100" \
| jq -r '.items[] | "\(.slug)\t\(.name)"'
agent-swarm x composio POST /tools/execute/GOOGLEDRIVE_LIST_FILES \
--body '{"user_id":"<connected-account-email>","connected_account_id":"<active-connected-account-id>","arguments":{}}'
```
## Gotchas
- **`ToolRouterV2_NoActiveConnection` (4302) despite an ACTIVE account.** Cause:
stale `INITIALIZING` duplicate accounts (leftover from regenerated Connect
Links) shadow the good one; the session auto-resolves the wrong account and
in-session `/search` returns empty. **Fix:** use direct
`POST /tools/execute/<SLUG>` with the ACTIVE `connected_account_id` pinned
(Recipe B → the `ca_…`). Long-term fix is deleting the stale duplicates — but
**ask the user before deleting any connection.**
- **A successful write response is not proof of the intended change.** Re-read
the affected record and compare the fields you meant to update.
- **Connected accounts cannot be re-homed safely between `user_id` values.** With
explicit authorization, delete the obsolete connection and reconnect it under
the correct user; without that authorization, stop and request it.
- **Calendar "from a year ago" trap** — `GOOGLECALENDAR_EVENTS_LIST` has **no
default `timeMin`**, so it returns old events. Always pass `timeMin` (now,
RFC3339), `singleEvents:true`, `orderBy:"startTime"`. See [[composio-google-calendar]].
## Guardrails
- Never invent tool slugs or argument shapes. Use the sibling skills, `/search`,
or `GET /tools?toolkit_slug=…`.
- Never pass absolute URLs as Composio paths — relative API paths only.
- Do not expose `COMPOSIO_API_KEY`; server-side code injects it.
- Do not fetch email bodies/attachments or run destructive/write tools unless the
task explicitly requires them.
- If multiple accounts exist for a toolkit, ask which to use or pin the specific
connected account per the task. **Ask before deleting any connection.**
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