composio

composio is a skill for Claude Code, Codex from tallclub/matimo. It costs 45 tokens per session (1,698 once invoked), scanned A, original, MIT.

A governance layer for Composio, a service that connects coding agents to hundreds of external applications and services.

In plain words
What is it for?
Use it to safely proxy Composio actions for services such as Jira, Linear, Asana, Google Workspace, Microsoft 365, and Salesforce.
Why use it?
It adds policy checks, risk labels, auditability, and human approval to external actions, while also making missing connected accounts easier to handle.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/tallclub/matimo/composio
Any agent
npx skills add tallclub/matimo --skill composio
Clone the repo
git clone --depth 1 https://github.com/tallclub/matimo

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for composio

README.md
[![agentmods](https://agentmods.dev/badge/skills/tallclub/matimo/composio.svg)](https://agentmods.dev/skills/tallclub/matimo/composio)
Your own site
<a href="https://agentmods.dev/skills/tallclub/matimo/composio"><img src="https://agentmods.dev/badge/skills/tallclub/matimo/composio.svg" alt="Measured on agentmods" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,698 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00045 $0.01698
Opus 5 $0.00023 $0.00849
Sonnet 5 $0.00009 $0.00340
Haiku 4.5 $0.00005 $0.00170

Measured 6d ago against content hash 66da65f6069d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

composio scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

typescript/packages/composio/skills/composio/SKILL.md · 153 lines

How it starts

The opening of the file, as written. The whole thing — 153 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Composio Governance Wrapper

@matimo/composio gives you governed, auditable access to Composio's tool catalog — Jira, Linear, Asana, Google Workspace, Microsoft 365, Salesforce, and dozens of other toolkits — without giving up Matimo's policy engine, risk classification, or human-in-the-loop (HITL) approval flow.

Every tool in this package is named composio_<toolkit>_<action> (e.g. composio_jira_get_issue, composio_linear_create_linear_issue) and proxies exactly one Composio action via Composio's REST execute endpoint. These tool definitions are generated by scripts/generate-tools.ts — do not hand-edit tools/composio_*/definition.yaml files; adjust scripts/risk-overrides.json and re-run the generator instead.

How a composio_* Call Works

Agent calls composio_jira_get_issue(
  composio_user_id: "...",
  composio_connected_account_id: "...",
  issue_id_or_key: "PROJ-123"
)
        │
        ▼
Matimo's standard policy checks run (canExecute: deprecation, draft
status, requires_approval + role checks) — see "Risk Levels" below for
what the explicit `risk:` field does and does not gate automatically.
        │
        ▼
HTTP POST https://backend.composio.dev/api/v3/tools/execute/JIRA_GET_ISSUE
  headers: { "x-api-key": <COMPOSIO_API_KEY> }
  body: {
    user_id: composio_user_id,
    connected_account_id: composio_connected_account_id,
    arguments: { _matimo_tool: "composio_jira_get_issue", issue_id_or_key: "PROJ-123" }
  }
        │
        ▼
Response envelope: { success, data: { data, error, successful } }

arguments._matimo_tool is a generated marker (always present, even when every other argument is omitted) — Composio's execute endpoint requires the arguments key to exist in the request body, and Matimo's HTTP executor drops empty nested objects. Ignore this field; it carries no semantic meaning beyond keeping arguments non-empty and tagging Composio-side logs with the originating Matimo tool name.

Every Tool Needs Three Things

Read the full file on GitHub · 153 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 153 lines · 45 tokens per session scan A 66da65f6069d

Subscribe to this mod's changes

composio is a skill published in the GitHub repository tallclub/matimo (11 stars, last pushed 2d ago), licensed MIT. It adds 45 tokens to every session and 1,698 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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