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 instructions/moleculerjs/mcp-server/claude-mdgit clone --depth 1 https://github.com/moleculerjs/mcp-serverWrote 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/moleculerjs/mcp-server/claude-md)<a href="https://agentmods.dev/instructions/moleculerjs/mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/moleculerjs/mcp-server/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 | $0.00595 | $0.00595 |
| Opus 5 | $0.00298 | $0.00298 |
| Sonnet 5 | $0.00119 | $0.00119 |
| Haiku 4.5 | $0.00060 | $0.00060 |
Grade A, and why
mcp-server 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 4d 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 — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.
@moleculer/mcp-server
MCP server mixin for Moleculer API Gateway. Exposes Moleculer microservice actions as MCP tools via Streamable HTTP transport.
File Structure
src/
index.ts # Main export: McpServerMixin() function
types.ts # TypeScript interfaces (McpServerMixinOptions)
schema-converter.ts # fastest-validator → Zod schema conversion
tool-generator.ts # Auto-discovery: action registry → MCP tool registration
test/
index.test.ts # Integration tests (MCP client ↔ server)
schema-converter.test.ts # Schema conversion unit tests
auto-discovery.test.ts # Auto-discovery integration tests
mcp-client.ts # Test MCP client helper
examples/
index.ts # Entry point (module selector)
simple/
index.ts # Simple example (greeter + products)
products.service.ts # CRUD products service (@moleculer/database)
client/
index.ts # MCP client example
Build & Test Commands
npm run build # tsc — dual CJS/ESM output to dist/
npm run check # tsc --noEmit (type check only)
npm test # vitest --run --coverage
npm run ci # vitest --watch (development)
npm run lint # eslint
npm run dev # nodemon with MCP inspector
Naming Conventions
- Variables/functions: camelCase
- File names: kebab-case (e.g.
schema-converter.ts) - Types/interfaces: PascalCase (e.g.
McpServerMixinOptions) - MCP tool names: snake_case (e.g.
weather_forecast) - Constants: UPPER_SNAKE_CASE (global), camelCase (local)
Key Options (McpServerMixinOptions)
routeOptions— moleculer-web route config (default path:/mcp)services—string | string[]— service whitelist or glob patternexcludeActions—string[]— action name patterns to excludeexposeBrokerTools—boolean(default:true) — show/hide list_nodes, list_services, etc.toolNamePrefix—string(default:"") — prefix for auto-generated tool names
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.
- 4d ago First seen · 60 lines · 595 tokens per session scan A ea5ab1285739
mcp-server CLAUDE.md is an instructions file published in the GitHub repository moleculerjs/mcp-server (4 stars, last pushed 5mo ago), licensed MIT. It adds 595 tokens to every session, about $0.0030 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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