Borrowing it
Nothing to install: this file belongs to mapbox/mapbox-agent-skills. 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/mapbox/mapbox-agent-skills/main/AGENTS.mdgit clone --depth 1 https://github.com/mapbox/mapbox-agent-skillsWrote 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/mapbox/mapbox-agent-skills/agents-md)<a href="https://agentmods.dev/instructions/mapbox/mapbox-agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/mapbox/mapbox-agent-skills/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/mapbox/mapbox-agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/mapbox/mapbox-agent-skills/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 | $0.00823 | $0.00823 |
| Opus 5.5 | $0.00329 | $0.00329 |
| Sonnet 5.5 | $0.00165 | $0.00165 |
| Haiku 4.5 | $0.00082 | $0.00082 |
Grade A, and why
mapbox-agent-skills 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 2mo 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 — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Mapbox Development Knowledge Base
This repo contains specialized Agent Skills for Mapbox development. Skills provide domain expertise that helps you make informed decisions when building map applications.
Available Skills
Migration & Platform Comparison
- mapbox-google-maps-migration: Migrate from Google Maps Platform to Mapbox GL JS. Covers API equivalents (coordinate order, markers, popups, geocoding), performance advantages (WebGL vs DOM), and migration patterns. Use when transitioning existing Google Maps apps or comparing platforms.
- mapbox-maplibre-migration: Migrate between Mapbox GL JS ↔ MapLibre GL JS. ~95% API compatible. Covers package/import changes, token handling, style URLs (mapbox:// vs custom), license differences. Use for open-source migrations or understanding compatibility.
Performance & Optimization
- mapbox-web-performance-patterns: Optimize Mapbox GL JS apps. Covers initialization waterfalls, bundle size, marker performance (HTML vs Canvas vs Symbol layers), clustering, data loading (GeoJSON vs vector tiles), memory management. Critical patterns prioritized by UX impact.
- mapbox-web-integration-patterns: Framework integration (React, Vue, Svelte, Angular, Next.js). Covers proper initialization/cleanup, state management, SSR handling, component patterns. Use when integrating Mapbox into modern web frameworks.
Design & Styling
- mapbox-cartography: Map design principles. Covers color theory, visual hierarchy, typography, accessibility, data visualization best practices. Use for creating visually effective, accessible maps.
- mapbox-style-patterns: Common style patterns and layer configurations. Covers data-driven styling, expressions, filters, layer types. Use when building custom map styles or configuring layers.
- mapbox-style-quality: Style validation, accessibility checks, performance optimization, testing patterns. Use when ensuring style quality and performance.
Security
- mapbox-token-security: Access token best practices. Covers public vs secret tokens, URL restrictions, token rotation, scoping, rate limiting. Use when implementing secure token management.
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.
- 2mo ago First seen · 59 lines · 823 tokens per session scan A 8b450ad8dc41
mapbox-agent-skills AGENTS.md is an instructions file published in the GitHub repository mapbox/mapbox-agent-skills (84 stars, last pushed 3d ago), licensed MIT. It adds 823 tokens to every session, about $0.0033 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.
mapbox-agent-skills AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| mapbox-agent-skills AGENTS.mdmapbox/mapbox-agent-skills | Instructions file | 84 | 3d ago | MIT | A | 823 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |