Grounded Docs is an MCP server that builds a local, version-aware index of documentation from websites, code repositories, package registries, local files, and archives for AI coding assistants. It helps assistants retrieve current project-specific documentation and supports MCP-compatible clients such as Claude, Cline, and similar tools. The catalogue add-ons provide skills, commands, and instructions for working with this documentation server.
Borrowing it
Nothing to install: this file belongs to arabold/docs-mcp-server. 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/arabold/docs-mcp-server/main/AGENTS.mdgit clone --depth 1 https://github.com/arabold/docs-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/arabold/docs-mcp-server/agents-md)<a href="https://agentmods.dev/instructions/arabold/docs-mcp-server/agents-md"><img src="https://agentmods.dev/badge/instructions/arabold/docs-mcp-server/agents-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/arabold/docs-mcp-server/agents-md"><img src="https://agentmods.dev/badge/instructions/arabold/docs-mcp-server/agents-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 | $0.03638 | $0.03638 |
| Opus 5.5 | $0.01455 | $0.01455 |
| Sonnet 5.5 | $0.00728 | $0.00728 |
| Haiku 4.5 | $0.00364 | $0.00364 |
Grade A, and why
docs-mcp-server AGENTS.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 6d 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 — 154 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent Instructions for docs-mcp-server
Repository Context
- Repository:
arabold/docs-mcp-server - Core Stack: Node.js 22.x, TypeScript, Vite, AlpineJS, TailwindCSS, SQLite (better-sqlite3)
- Node Version: Always use Node.js v22 for local development and builds, even if
package.jsonallows older versions. Ifnvmis installed, runnvm use 22before local commands.
- Node Version: Always use Node.js v22 for local development and builds, even if
- Tooling: Biome (lint/format), Vitest (test), Husky (pre-commit)
- Critical Documentation:
- 📖 Read
README.mdfirst for project structure, setup, and configuration details. - 🏗️ Read
ARCHITECTURE.mdbefore making changes to understand system design and service interactions.
- 📖 Read
Development Workflow
Key Commands
| Task | Command | Description |
|---|---|---|
| Setup | npm install |
Install dependencies |
| Build | npm run build |
Build both server and web assets |
| Lint | npm run lint |
Check code issues with Biome |
| Fix | npm run lint:fix |
Auto-fix lint issues (add -- --unsafe if needed) |
| Typecheck | npm run typecheck |
Run TypeScript compiler checks |
| Format | npm run format |
Format code with Biome |
| Test All | npm test |
Run all tests with Vitest |
| Test Single | npx vitest run <path> |
Run a specific test file (e.g., src/utils/foo.test.ts) |
Git Workflow
- Branching:
<type>/<issue>-<desc>(e.g.,feat/123-add-cache) - Pre-commit: Husky runs lint, typecheck, and tests. Never bypass.
- Security: NEVER commit secrets, credentials, or sensitive data (e.g.,
.env).
Dependency Hygiene
- Use
npm ci(notnpm install) when you just neednode_modules; it installs from the lockfile without mutating it. Reservenpm installfor intentional dependency changes. - Keep Node 22 —
better-sqlite3ships a Node-ABI-pinned native binary. Do not bump the engine floor to v24+. - For occasional CLI tools that aren't part of the runtime (e.g.
promptfoofor search evals), invoke them vianpx -y <pkg>@<version>frompackage.jsonscripts rather than declaring them as dependencies — keeps the dep tree and lockfile clean. - npm 10 does not record
libcinpackage-lock.json, sonpm cion Linux installs both the glibc and musl builds of every prebuilt native package (@xberg-io/xberg,@biomejs/cli,lightningcss, …). TheDockerfileprunes the musl copies afternpm ci. If the lockfile is ever regenerated from scratch with npm 11+, thelibcfields appear and that prune becomes redundant.
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.
- 6d ago Changed · +9 lines · +988 tokens per session 57d13d708fba
- 26d ago Changed · +5 lines · +264 tokens per session 35350552b038
- 28d ago Changed · +1 lines · +102 tokens per session 7efab7d484e4
- 1mo ago First seen · 139 lines · 2,284 tokens per session scan A 4195936bd49f
docs-mcp-server AGENTS.md is an instructions file published in the GitHub repository arabold/docs-mcp-server (1,813 stars, last pushed today), licensed MIT. It adds 3,638 tokens to every session, about $0.0146 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 2026-08-30.
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