Borrowing it
Nothing to install: this file belongs to sandraschi/mastodon-mcp. 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/sandraschi/mastodon-mcp/master/CLAUDE.mdgit clone --depth 1 https://github.com/sandraschi/mastodon-mcpWrote 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/instructions/sandraschi/mastodon-mcp/claude-md)<a href="https://agentmods.dev/instructions/sandraschi/mastodon-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/sandraschi/mastodon-mcp/claude-md.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 | $0.00167 | $0.00167 |
| Opus 5 | $0.00084 | $0.00084 |
| Sonnet 5 | $0.00033 | $0.00033 |
| Haiku 4.5 | $0.00017 | $0.00017 |
Grade A, and why
mastodon-mcp CLAUDE.md 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 8d 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.
What it actually says
mastodon-mcp — Claude / agent context
Private Fediverse MCP. Ports 10754 / 10755.
Do
- Queue fleet-PR drafts via outbox; require human approve before publish
- Keep
MASTODON_DRY_RUN=1unless Sandra explicitly wants a live post - Follow FLEET_PROMOTION.md tone
Don't
- Auto-post from scraper-mcp or CI
- Call Mastodon API from fleet-public-relations-mcp (handoff only)
- Add GitHub Actions while
.nopublish/ private - Bluesky here
Commands
.\start.ps1
uv run pytest tests/ -q
just mcpb-pack
See AGENTS.md, PRD.md, llms-full.txt.
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.
- 8d ago First seen · 27 lines · 167 tokens per session scan A 810327eabe3b
mastodon-mcp CLAUDE.md is an instructions file published in the GitHub repository sandraschi/mastodon-mcp (1 stars, last pushed 8d ago), licensed MIT. It adds 167 tokens to every session, about $0.0008 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 2026-08-31.
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