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.
npx agentmods add skills/tallclub/matimo/composionpx skills add tallclub/matimo --skill composiogit clone --depth 1 https://github.com/tallclub/matimoWrote 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.
[](https://agentmods.dev/skills/tallclub/matimo/composio)<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>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.
| Model | Per session | Once 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 |
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.
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
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.
- 6d ago First seen · 153 lines · 45 tokens per session scan A 66da65f6069d
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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