Borrowing it
Nothing to install: this file belongs to feathersjs-ecosystem/FeathersMCP. 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/feathersjs-ecosystem/FeathersMCP/main/.agents/skills/feathersjs-mcp/SKILL.mdgit clone --depth 1 https://github.com/feathersjs-ecosystem/FeathersMCPWrote 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/feathersjs-ecosystem/feathersmcp/feathersjs-mcp)<a href="https://agentmods.dev/skills/feathersjs-ecosystem/feathersmcp/feathersjs-mcp"><img src="https://agentmods.dev/badge/skills/feathersjs-ecosystem/feathersmcp/feathersjs-mcp/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/feathersjs-ecosystem/feathersmcp/feathersjs-mcp"><img src="https://agentmods.dev/badge/skills/feathersjs-ecosystem/feathersmcp/feathersjs-mcp.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 | $0.00169 | $0.04057 |
| Opus 5.5 | $0.00068 | $0.01623 |
| Sonnet 5.5 | $0.00034 | $0.00811 |
| Haiku 4.5 | $0.00017 | $0.00406 |
Grade A, and why
feathersjs-mcp 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 2mo 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 — 296 lines — stays where its author put it; the contents beside it link to each section on GitHub.
FeathersMCP Guide
REQUIRED ACTION — do not skip this. You have MCP tools named
get-menu,search-doc,get-doc,search-community,get-community-post,share-knowledge, andget-schemaavailable in your tool palette right now. Before answering ANY FeathersJS question, you must call at leastsearch-doc(andsearch-communitywhen routing rules below apply). Do not answer from training data, from reading this file, or from memory. Call the MCP tools first, then answer using their results. FeathersJS has changed significantly across versions — your training data is unreliable for it.Ask before assuming runtime. FeathersJS supports Node.js, Bun, Deno, and Cloudflare Workers — each has different setup, config, and deployment. If the user asks about setup, deployment, or configuration without specifying a runtime, ask which one they're targeting before searching. Do not default to Node.js.
This skill gives you live access to the complete FeathersJS v6 documentation (47 pages across API reference, guides, cookbook, and ecosystem) via the FeathersMCP MCP server.
How to Use This Skill
This skill activates for any FeathersJS question. Here's what it covers:
| User need | What this skill does |
|---|---|
| "How do I build X in FeathersJS?" | Searches official docs, retrieves full page if truncated, supplements with community patterns |
| "What is X / explain Y" | Grounds the explanation in retrieved doc content rather than training data |
| "Set up feathersjs-mcp in Cursor/VS Code/Claude Desktop" | Walks through installation and activation step by step |
| "My MCP server isn't connecting / tools not showing" | Diagnoses the problem using the troubleshooting table |
| "Can FeathersJS do X?" (X not in docs) | Searches honestly, says "not found", suggests the nearest documented alternative |
| "I just built X — can I share it?" | Calls share-knowledge and gives the user a GitHub link to click |
| "Has anyone done X with FeathersJS?" | Searches community knowledge base alongside official docs |
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.
- 2mo ago First seen · 296 lines · 169 tokens per session scan A 2f56fd6f1b3c
feathersjs-mcp is a skill published in the GitHub repository feathersjs-ecosystem/FeathersMCP (5 stars, last pushed 6mo ago), licensed MIT. It adds 169 tokens to every session and 4,057 once invoked, about $0.0007 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 2026-08-31.
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