Borrowing it
Nothing to install: this file belongs to securecoders/opengraph-io-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/securecoders/opengraph-io-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/securecoders/opengraph-io-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/securecoders/opengraph-io-mcp/claude-md)<a href="https://agentmods.dev/instructions/securecoders/opengraph-io-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/securecoders/opengraph-io-mcp/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/securecoders/opengraph-io-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/securecoders/opengraph-io-mcp/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 | $0.01242 | $0.01242 |
| Opus 5.5 | $0.00497 | $0.00497 |
| Sonnet 5.5 | $0.00248 | $0.00248 |
| Haiku 4.5 | $0.00124 | $0.00124 |
Grade A, and why
opengraph-io-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 26d 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 — 49 lines — stays where its author put it; the contents beside it link to each section on GitHub.
opengraph-io-mcp
MCP (Model Context Protocol) server exposing OpenGraph.io capabilities (OG metadata, scrape, screenshot, query, extract, markdown, AI image generation, site audit, link preview) to AI clients such as Claude and Cursor.
This file supplements the parent workspace CLAUDE.md. Read that first for cross-repo rules, git safety, and the reuse/testing/planning workflow — it is not repeated here.
Stack
- TypeScript, Express
^5.1.0,@modelcontextprotocol/sdk ^1.25.3, Node ESM (NodeNext). Node 24 —.nvmrc,engines.node >=24, and bothDockerfilestages onnode:24-alpine.publish.ymlalready ran CI on 24.
Run / Build / Test
- Build:
npm run build(tsc, thenpostbuild:tsc-alias). - Start (Streamable HTTP, default port 3010):
npm startornpm run start:http(bothnode dist/server-http.js). - Start (stdio):
npm run start:stdio(node dist/server-stdio.js). - Dev:
npm run dev(ts-node-dev -r tsconfig-paths/register src/server-http.ts), ornpm run dev:stdio. - Build an
.mcpbbundle:npm run build:mcpb. - Tests: Vitest —
npm test(vitest run),npm run test:watch. Config isvitest.config.mts; specs live in the roottests/directory, never undersrc/(tsconfigrootDiris./srcandfiles: ["dist"], so specs there would ship indist/and the.mcpbbundle). Covers session auth guards, the tool-registry contract and dispatch characterization, the Markdown envelope, site-audit history and monitoring, and the fix-list and destructive tools.
Data Ownership
- None — in-memory MCP session map only (
src/http/handlers.ts).
Auth
- OAuth 2.1 JWT (RS256 via
jose, JWKS fetched fromapifur-api) for site-audit/link-preview tools —src/utils/oauth.ts,src/server-http.ts. Env:OAUTH_JWKS_URL,OAUTH_ISSUER,OAUTH_AUDIENCE,MCP_RESOURCE_URL. - Legacy
x-app-idheader orOPENGRAPH_APP_ID/APP_IDenv for data tools (src/utils/og.ts). - Site audit / link preview tools additionally require OAuth bearer + org ID (
src/utils/sessionIdToAppId.ts).
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.
- 26d ago Changed · +6 lines · +412 tokens per session cf095c8b76a8
- 28d ago First seen · 43 lines · 830 tokens per session scan A 8dd5f9227eab
opengraph-io-mcp CLAUDE.md is an instructions file published in the GitHub repository securecoders/opengraph-io-mcp (2 stars, last pushed 26d ago), licensed ISC. It adds 1,242 tokens to every session, about $0.0050 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 2026-09-22.
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