Borrowing it
Nothing to install: this file belongs to murilojrpereira/mcp-graphql-bridge. 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/murilojrpereira/mcp-graphql-bridge/main/CLAUDE.mdgit clone --depth 1 https://github.com/murilojrpereira/mcp-graphql-bridgeWrote 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/murilojrpereira/mcp-graphql-bridge/claude-md)<a href="https://agentmods.dev/instructions/murilojrpereira/mcp-graphql-bridge/claude-md"><img src="https://agentmods.dev/badge/instructions/murilojrpereira/mcp-graphql-bridge/claude-md/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/instructions/murilojrpereira/mcp-graphql-bridge/claude-md"><img src="https://agentmods.dev/badge/instructions/murilojrpereira/mcp-graphql-bridge/claude-md.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 | $0.00685 | $0.00685 |
| Opus 5.5 | $0.00274 | $0.00274 |
| Sonnet 5 | $0.00137 | $0.00137 |
| Haiku 4.5 | $0.00068 | $0.00068 |
Grade A, and why
mcp-graphql-bridge 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 2d 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 — 58 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
MCP server that bridges any GraphQL API to MCP clients: it introspects the schema and registers one
tool per query and mutation. Published to npm and the MCP Registry as mcp-graphql-bridge. See
README.md for usage and docs/architecture.md for design rationale.
Commands
npm run build # tsc → dist/
npm test # vitest
npm run dev # watch mode
npm start # run the compiled server (stdio)
npm run start:http # run with MCP_TRANSPORT=http
There is no lint or format script; CI runs npm ci, npm run build and npm test.
Layout (src/)
| File | Responsibility |
|---|---|
index.ts |
Entry point. stdio by default; MCP_TRANSPORT=http starts the HTTP transport |
introspection.ts |
Schema introspection and type helpers (getBaseType, typeString) |
tools.ts |
Applies schema filters and registers the tools (registerTools) |
operation.ts |
Builds GraphQL operation strings (buildOperation), detects mutations in raw queries |
zod.ts |
GraphQL argument types → Zod (argToZod, buildArgsSchema) |
executor.ts |
Executes operations against the endpoint, incl. per-call overrides |
auth.ts |
Authorization for the HTTP transport (isAuthorized) |
types.ts |
Shared types |
Tests live in src/__tests__/, one file per module.
Conventions
- TypeScript strict mode, ESM with
module: Node16: relative imports must end in.js(import ... from "./tools.js"). Noanywithout justification. - Secrets (configured and per-call tokens/headers) are redacted from error text and response bodies
before they reach the calling LLM. Keep it that way when touching
executor.ts. GRAPHQL_INCLUDE_MUTATIONS=falsemust keep every mutation unreachable, including through the generic query tool (queryContainsMutation). Do not weaken that path.- If you add, remove or rename an environment variable, update the README table and
environmentVariablesinserver.json. - Add a
## [Unreleased]entry toCHANGELOG.mdfor user-visible changes.
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.
- 2d ago First seen · 58 lines · 685 tokens per session scan A 3e15dc59c3b1
mcp-graphql-bridge CLAUDE.md is an instructions file published in the GitHub repository murilojrpereira/mcp-graphql-bridge (1 stars, last pushed 3d ago), licensed MIT. It adds 685 tokens to every session, about $0.0027 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 2026-09-21.
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