Borrowing it
Nothing to install: this file belongs to OpenCoven/coven. 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/OpenCoven/coven/main/AGENTS.mdgit clone --depth 1 https://github.com/OpenCoven/covenWrote 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/opencoven/coven/agents-md)<a href="https://agentmods.dev/instructions/opencoven/coven/agents-md"><img src="https://agentmods.dev/badge/instructions/opencoven/coven/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/opencoven/coven/agents-md"><img src="https://agentmods.dev/badge/instructions/opencoven/coven/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 | $0.03089 | $0.03089 |
| Opus 5.5 | $0.01236 | $0.01236 |
| Sonnet 5.5 | $0.00618 | $0.00618 |
| Haiku 4.5 | $0.00309 | $0.00309 |
Grade A, and why
coven 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 5d 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 — 260 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md — coven
Guidance for AI agents (Codex, Claude Code, Hermes, and any Coven familiar)
opening pull requests against this repo. Humans: your canonical guide is
CONTRIBUTING.md — this is the agent-specific layer on top.
Read first:
README.mdfor what this repo is, andCONTRIBUTING.mdfor the full contribution bar (including the "Contributor First 10 Minutes" checkout path).
What this repo is (one line)
Coven is a small, boring Rust authority layer with TypeScript integration packages around it. The development loop must keep that boundary clear: core logic stays in Rust; the npm packages are thin integration surface.
Check, enter a worktree, then claim it
Multiple agent sessions (Codex, Claude Code, familiars) frequently run against the same checkout at once, each in its own worktree. Worktrees keep git operations from racing, but they do not stop two sessions from independently building the same issue — which has happened repeatedly, producing duplicate PRs that a session then has to close. Before you touch code:
-
Check what's already taken. Duplication hides behind divergent branch names — one issue once spawned
fix/output-polish,fix/311-output-polish, andfix/output-polish-311— so branch names alone won't tell you. Check both the shared claim registry and open PRs:coven claim status # active claims, shared across every worktree of this repo gh pr list --state open # is there already a PR for this issue?If the issue is claimed or already has a PR, pick different work or coordinate.
-
Create or enter the task worktree. The automatic fallback identity is worktree-scoped, so enter the worktree before acquiring the claim:
git fetch origin main git worktree add -b <branch> /tmp/coven-<branch-slug> origin/main cd /tmp/coven-<branch-slug> -
Claim it with a shared, issue-keyed token — not your working branch name, which no other session can predict:
coven claim acquire issue-<N> # e.g. issue-311; a TTL-bounded lockClaims live in the repo's shared
--git-common-dir/agent-claims/, so every worktree and session sees them. For long tasks, extend the TTL withcoven claim heartbeat issue-<N>.
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.
- 5d ago Changed · +9 lines · +157 tokens per session 2aed3a64d07b
- 8d ago Changed · +5 lines · +98 tokens per session 04fec0b2586f
- 22d ago Changed · +18 lines · +229 tokens per session b49af8c2baf1
- 1mo ago Changed · +75 lines · +907 tokens per session b3ca0aae3e37
- 1mo ago First seen · 153 lines · 1,698 tokens per session scan A 51468c69173c
coven AGENTS.md is an instructions file published in the GitHub repository OpenCoven/coven (73 stars, last pushed today), licensed MIT. It adds 3,089 tokens to every session, about $0.0124 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.
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.