Borrowing it
Nothing to install: this file belongs to outfitter-dev/carabiner. 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/outfitter-dev/carabiner/main/AGENTS.mdgit clone --depth 1 https://github.com/outfitter-dev/carabinerWrote 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/outfitter-dev/carabiner/agents-md)<a href="https://agentmods.dev/instructions/outfitter-dev/carabiner/agents-md"><img src="https://agentmods.dev/badge/instructions/outfitter-dev/carabiner/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/outfitter-dev/carabiner/agents-md"><img src="https://agentmods.dev/badge/instructions/outfitter-dev/carabiner/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 | $0.02127 | $0.02127 |
| Opus 5.5 | $0.00851 | $0.00851 |
| Sonnet 5.5 | $0.00425 | $0.00425 |
| Haiku 4.5 | $0.00213 | $0.00213 |
Grade A, and why
carabiner 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 — 233 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Current Work:
- Provider adapter rollout:
.agents/notes/hook-adapter-architecture.md- Logger & fixture plan (unified logger, fixtures, docs, lefthook):
.agents/notes/logger-and-tests-plan.md
About Matt
- Name: Matt Galligan
- "Matt" for short
@galliganon GitHub
- Profile:
- Full-stack product builder who leverages (and depends on) AI agents
- Working on "Outfitter"
- Relevant links:
- Github: https://github.com/galligan
- X/Twitter: https://x.com/mg
Technology Stack
I default to using TypeScript (via Bun) for most projects. Where speed is a priority, I'll use Rust. Simply put, use the best tool for the job.
TypeScript
- Preference: Strongly typed (strict settings)
- Runtime: Bun
- Package Manager: Bun
- Server: Hono preferred, Express, Fastify, etc.
Rust
- Preference: Speed, performance, and safety
- Runtime: Rust
- Package Manager: Cargo
- Server: Axum, Actix, etc.
Frontends
- Framework: React + TanStack Router/TanStack Start or Next.js
- CSS/Styling: Tailwind CSS 4
- Components: shadcn/ui, components stored in
packages/ui/components- DRY, reusable, and accessible components
Database
- Starting Projects: SQLite by default (use Bun.SQL if TypeScript)
- Production: PostgreSQL (with Supabase or Neon) or Convex
- Redis Alternative: Upstash when relevant
API Design
- Preference Order: tRPC > REST > GraphQL
- Requirements: OpenAPI + Swagger documentation
- Priority: MCP server compatibility
Deployment
- Primary: Cloudflare preferred, Vercel
- Alternatives: Open to Fly.io
Testing
- Frameworks: Vitest, Playwright
- Priority: Compatibility with MCP servers for agent automation
Authentication
- Primary: BetterAuth
- Alternative: Clerk
CI/CD
- Primary: GitHub Actions (complex actions with Cloudflare runners)
- Alternative: Vercel/Cloudflare integrated CI when deploying there
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 · 233 lines · 2,127 tokens per session scan A 56985b229131
carabiner AGENTS.md is an instructions file published in the GitHub repository outfitter-dev/carabiner (4 stars, last pushed 9mo ago), licensed MIT. It adds 2,127 tokens to every session, about $0.0085 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 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.