Borrowing it
Nothing to install: this file belongs to mathiasbourgoin/roster. 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/mathiasbourgoin/roster/main/AGENTS.mdgit clone --depth 1 https://github.com/mathiasbourgoin/rosterWrote 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/mathiasbourgoin/roster/agents-md)<a href="https://agentmods.dev/instructions/mathiasbourgoin/roster/agents-md"><img src="https://agentmods.dev/badge/instructions/mathiasbourgoin/roster/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/mathiasbourgoin/roster/agents-md"><img src="https://agentmods.dev/badge/instructions/mathiasbourgoin/roster/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 | $0.04237 | $0.04237 |
| Opus 5.5 | $0.01695 | $0.01695 |
| Sonnet 5.5 | $0.00847 | $0.00847 |
| Haiku 4.5 | $0.00424 | $0.00424 |
Grade A, and why
roster 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 12d 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 — 242 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md — roster
Project
A curated registry of reusable agent definitions, skills, rules, and hooks — paired with a harness builder that assembles shared project harnesses and a recruiter that finds optimal agent teams.
Conventions
- Commit convention: conventional commits (
feat:,fix:,docs:,chore:) - Issue tracker: GitHub
- Branch strategy: feature branches → PR → rebase-merge to main (rebase-only: squash and merge-commits are disabled on this repo)
- Versioning: semver on each component (
version:frontmatter field)- Patch (x.x.+1): typo/wording, no behavioral change
- Minor (x.+1.0): new capabilities, backward compatible
- Major (+1.0.0): breaking changes (rewritten workflow, renamed tunables)
Component Types
| Type | Schema | Location | Install target |
|---|---|---|---|
| Agent | schema/agent-schema.md |
agents/<domain>/ |
.harness/agents/ then project to .opencode/agents/ or .claude/agents/ |
| Skill | schema/skill-schema.md |
skills/<domain>/ |
.harness/skills/ then project to .opencode/skills/ or .claude/commands/ |
| Rule | schema/rule-schema.md |
rules/<category>/ |
.harness/rules/ then project to .opencode/rules/ or .claude/rules/ |
| Tool Hook | schema/hook-schema.md |
hooks/<category>/ |
.harness/hooks/ then project to runtime settings |
| Skill Hook | schema/hook-schema.md |
.harness/hooks/skills/<name>/ |
project-local, auto-discovered by roster-run |
| KB | schema/kb-schema.md |
kb/ |
kb/ |
| Harness | schema/harness-schema.md |
— | .harness/harness.json then project to opencode.json or .claude/harness.json |
Shared Harness
- The canonical project harness lives under
.harness/ - OpenCode compatibility is generated under
.opencode/ - Claude compatibility is generated under
.claude/ - Codex compatibility is generated under
.agents/skills/ - The operational initializer is
./scripts/init-harness.sh <project-root> [profile] - The operational projection command is
./scripts/sync-harness.sh <project-root> - Agents manipulating installed project harness data should read
.harness/harness.jsonfirst and treat.opencode/,.claude/, and.agents/as generated compatibility surfaces
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.
- 12d ago Changed · +2 lines · +86 tokens per session 9ea5f1f3b033
- 26d ago Changed · +1 lines · +46 tokens per session 9e20c2902d2b
- 27d ago Changed · +3 lines · +49 tokens per session 6e5d30a64d4e
- 1mo ago Changed · +1 lines · -263 tokens per session 294921fa3003
- 1mo ago First seen · 235 lines · 4,319 tokens per session scan A 1ce57430dfd3
roster AGENTS.md is an instructions file published in the GitHub repository mathiasbourgoin/roster (2 stars, last pushed yesterday), licensed MIT. It adds 4,237 tokens to every session, about $0.0169 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 2026-09-07.
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).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.