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/.claude/skills/add-package/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/add-package)<a href="https://agentmods.dev/skills/tallclub/matimo/add-package"><img src="https://agentmods.dev/badge/skills/tallclub/matimo/add-package/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/add-package"><img src="https://agentmods.dev/badge/skills/tallclub/matimo/add-package.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 | $0.00000 | $0.01144 |
| Opus 5.5 | $0.00000 | $0.00458 |
| Sonnet 5.5 | $0.00000 | $0.00229 |
| Haiku 4.5 | $0.00000 | $0.00114 |
Grade A, and why
add-package 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 — 175 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Add a new Matimo provider package: $ARGUMENTS
If no provider specified, ask: which provider (e.g. LinkedIn, Stripe, Twitter/X), and which tools to include in the first release.
Step 1 — Check for existing WIP implementation
Look in typescript/packages/ first:
ls typescript/packages/
If typescript/packages/<name>/ exists, examine its tool YAML files. These can be adapted — they may just need schema fixes and Python executors added. Validate them: pnpm validate-tools.
If no existing implementation, scaffold from scratch (use packages/slack/ as the reference template).
Step 2 — Fetch official API docs
Use WebSearch / WebFetch to get the real API reference. Document:
- Base URL
- Authentication method (API key, OAuth2, Basic, Bearer)
- Rate limits
- Available endpoints — pick the highest-value ones for v1 (aim for 3–8 tools)
Step 3 — Create package directory structure
packages/<name>/
├── package.json
├── definition.yaml # OAuth2 provider config (omit if API key auth only)
├── tools/
├── skills/
│ └── <name>/
│ └── SKILL.md
├── test/
│ ├── unit/
│ └── integration/
└── README.md
package.json:
{
"name": "@matimo/<name>",
"version": "0.1.0",
"description": "<Provider> tools for Matimo",
"type": "module",
"files": ["tools", "skills", "README.md"],
"peerDependencies": { "matimo": "workspace:*" },
"devDependencies": { "@matimo/core": "workspace:*" }
}
Add to pnpm-workspace.yaml:
- "packages/<name>"
Step 4 — OAuth2 provider config (if OAuth2 auth)
packages/<name>/definition.yaml:
name: <name>-provider
type: provider
version: '1.0.0'
description: |
<Provider> OAuth2 Provider Configuration
Setup instructions here...
provider:
name: <name>
displayName: <Provider Name>
oauth2:
authorizationUrl: https://provider.com/oauth/authorize
tokenUrl: https://provider.com/oauth/token
scopes: [scope1, scope2]
env:
CLIENT_ID: <NAME>_CLIENT_ID
CLIENT_SECRET: <NAME>_CLIENT_SECRET
REDIRECT_URI: <NAME>_REDIRECT_URI
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 · 175 lines · 0 tokens per session scan A 0cc5478e2156
add-package is a skill published in the GitHub repository tallclub/matimo (18 stars, last pushed yesterday), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,144 tokens. 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.
add-package compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| add-packagetallclub/matimo | Skill | 18 | yesterday | MIT | A | 0 | Claude Code |
| 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 |