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/mapbox/mcp-docs-server/copilot-instructionsgit clone --depth 1 https://github.com/mapbox/mcp-docs-serverWhat 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 | $0.00310 | $0.00310 |
| Opus 5 | $0.00155 | $0.00155 |
| Sonnet 5 | $0.00062 | $0.00062 |
| Haiku 4.5 | $0.00031 | $0.00031 |
Grade A, and why
mcp-docs-server copilot-instructions.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 yesterday.
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.
What it actually says
GitHub Copilot Guidelines
This repository is the Mapbox MCP Documentation Server — a TypeScript MCP server providing AI assistants with Mapbox documentation and reference materials.
Key Facts
- Tools extend
BaseTool(notMapboxApiBasedTool— that class lives in a different repo) BaseTool.execute(input)takes only the validated input — noaccessTokenorcontextparams- No Mapbox access token is needed for most tools; if required, accept it as an input field
- HTTP requests use the shared
httpRequestfromsrc/utils/httpPipeline.ts— never patchglobal.fetch - Tests mock
httpRequestwithvi.fn()— no real network calls in tests
Before Accepting Suggestions
- Verify the suggestion uses
BaseTool, notMapboxApiBasedTool - Verify
execute(input)has the correct signature (no extra params) - Verify HTTP calls go through the injected
httpRequest, notfetchdirectly - Verify no secrets or tokens are hardcoded
Standards
- TypeScript strict mode — no implicit
any - All new tools/resources need tests in
test/mirroring thesrc/structure - Update
CHANGELOG.mdunderUnreleasedwith every user-facing change
See CONTRIBUTING.md and CLAUDE.md for full patterns and examples.
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.
- yesterday First seen · 27 lines · 310 tokens per session scan A d96f186e233b
mcp-docs-server copilot-instructions.md is an instructions file published in the GitHub repository mapbox/mcp-docs-server (1 stars, last pushed 6d ago), licensed MIT. It adds 310 tokens to every session, about $0.0015 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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