Borrowing it
Nothing to install: this file belongs to tallclub/matimo. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/tallclub/matimo/main/.github/skills/matimo-provider-creation/SKILL.mdgit 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/matimo-provider-creation)<a href="https://agentmods.dev/skills/tallclub/matimo/matimo-provider-creation"><img src="https://agentmods.dev/badge/skills/tallclub/matimo/matimo-provider-creation/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/tallclub/matimo/matimo-provider-creation"><img src="https://agentmods.dev/badge/skills/tallclub/matimo/matimo-provider-creation.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00049 | $0.04193 |
| Opus 5.5 | $0.00020 | $0.01677 |
| Sonnet 5.5 | $0.00010 | $0.00839 |
| Haiku 4.5 | $0.00005 | $0.00419 |
Grade A, and why
matimo-provider-creation 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 1mo 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 — 531 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Matimo Provider Creation — TypeScript & Python
This skill teaches the comprehensive workflow for creating production-grade provider packages in both TypeScript and Python SDKs with identical patterns and full Matimo tool integration.
Quick Reference: Agent Tool Mapping
| Objective | Tool | Usage |
|---|---|---|
| Write tool YAML | edit/createFile |
Write definition.yaml in the package directory (both SDKs) |
| Validate YAML | matimo_validate_tool |
yaml_content → schema errors and policy notes |
| Validate all tools | execute → pnpm validate-tools |
Schema plus repo rules (DELETE needs requires_approval: true, function tools need risk:) |
| Validate Skill | matimo_validate_skill |
Check a SKILL.md against the Agent Skills spec |
| Search Code | search |
Find existing patterns/tools to copy from |
| Execute Commands | execute |
Run tests and linting (the user approves each command) |
| Fetch Web Content | web |
Retrieve official API documentation |
Never use
matimo_create_toolfor a provider package. It is the runtime meta-tool for agents: it writes./matimo-tools/<name>/definition.yaml, forcesstatus: draftandrequires_approval: true, and asks a human before it runs. A draft only runs for theadminrole, so a provider tool written this way would not work for users.
Part 1: Universal Provider Structure
TypeScript Provider Package
typescript/packages/{provider}/
├── package.json # {"name": "@matimo/{provider}", "type": "module"}
├── definition.yaml # OAuth2 provider config (if OAuth2)
├── README.md # Usage guide, examples, auth setup
├── tools/
│ ├── {tool-1}/
│ │ └── definition.yaml # HTTP tool: YAML only
│ └── {tool-2}/
│ ├── definition.yaml # Function tool: code: ./{tool-2}.js
│ └── {tool-2}.ts # compiled to {tool-2}.js by the package build
├── skills/
│ └── {provider}/SKILL.md # Agent knowledge document
└── test/
├── unit/
│ └── {tool-1}.test.ts
└── integration/
└── {provider}-tools.test.ts
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.
- 1mo ago First seen · 531 lines · 49 tokens per session scan A ce66bf050ffd
matimo-provider-creation is a skill published in the GitHub repository tallclub/matimo (18 stars, last pushed yesterday), licensed MIT. It adds 49 tokens to every session and 4,193 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-10-05.
matimo-provider-creation compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| matimo-provider-creationtallclub/matimo | Skill | 18 | yesterday | MIT | A | 49 | Claude Code, Codex |
| imagegenopenai/codex | Skill | 133k | yesterday | Apache-2.0 | A | 113 | Codex |
| playwright-climicrosoft/playwright | Skill | 99k | yesterday | Apache-2.0 | A | 19 | Claude Code |
| local-ai-agentsmicrosoft/ai-agents-for-beginners | Skill | 79k | 4d ago | MIT | A | 200 | Claude Code, Codex |
| systematic-debuggingobra/superpowers | Skill | 313k | 3d ago | MIT | A | 21 | Claude Code |
| next-cache-components-adoptionvercel/next.js | Skill | 143k | today | MIT | A | 95 | Claude Code |
| next-partial-prefetching-adoptionvercel/next.js | Skill | 143k | today | MIT | A | 103 | Claude Code |