Borrowing it
Nothing to install: this file belongs to WellDunDun/reins. 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/WellDunDun/reins/master/AGENTS.mdgit clone --depth 1 https://github.com/WellDunDun/reinsWrote 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/welldundun/reins/agents-md)<a href="https://agentmods.dev/instructions/welldundun/reins/agents-md"><img src="https://agentmods.dev/badge/instructions/welldundun/reins/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/welldundun/reins/agents-md"><img src="https://agentmods.dev/badge/instructions/welldundun/reins/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 | $0.00792 | $0.00792 |
| Opus 5.5 | $0.00317 | $0.00317 |
| Sonnet 5.5 | $0.00158 | $0.00158 |
| Haiku 4.5 | $0.00079 | $0.00079 |
Grade A, and why
reins 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 — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Repository Overview
reins — Open-source CLI that operationalizes harness engineering. Scaffold, audit, evolve, and doctor any project's agent-readiness. Zero dependencies, Bun-powered.
Product Model (Must Keep Clear)
cli/reinsis the product engine. It is the only source of truth for readiness scoring and JSON outputs.skill/Reinsis the control-plane wrapper for coding agents. It decides when/how to call CLI commands and how to parse results.- Humans steer outcomes. Agents execute the loop using Reins outputs.
- Reins exists to transfer proven harness patterns into any repo so agents can become more autonomous and consistent over time.
When updating docs or workflows, preserve this separation explicitly. Do not duplicate scoring logic in the skill layer.
Architecture
See ARCHITECTURE.md for domain map, module structure, and dependency rules.
Documentation Map
| Topic | Location | Status |
|---|---|---|
| Architecture | ARCHITECTURE.md | Current |
| CLI Source | cli/reins/src/index.ts | Current |
| CLI Modules | cli/reins/src/lib/ | Current |
| CLI Commands | cli/reins/src/lib/commands/ | Current |
| Audit Engine | cli/reins/src/lib/audit/ | Current |
| CLI Tests | cli/reins/src/index.test.ts | Current |
| Claude Skill | skill/Reins/SKILL.md | Current |
| Harness Methodology | skill/Reins/HarnessMethodology.md | Current |
| Skill Workflows | skill/Reins/Workflows/ | Current |
| Design Docs | docs/design-docs/index.md | Current |
| Core Beliefs | docs/design-docs/core-beliefs.md | Current |
| Ecosystem Positioning | docs/design-docs/ecosystem-positioning.md | Current |
| Product Specs | docs/product-specs/index.md | Current |
| Active Plans | docs/exec-plans/active/ | Current |
| Completed Plans | docs/exec-plans/completed/ | Current |
| Technical Debt | docs/exec-plans/tech-debt-tracker.md | Current |
| Risk Policy | risk-policy.json | Current |
| Golden Principles | docs/golden-principles.md | Current |
| CI Pipeline | .github/workflows/ci.yml | Current |
| Publish Pipeline | .github/workflows/publish.yml | Current |
| Version Bump Pipeline | .github/workflows/auto-bump-cli-version.yml | Current |
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 · 70 lines · 792 tokens per session scan A 27b6f7d73d3f
reins AGENTS.md is an instructions file published in the GitHub repository WellDunDun/reins (9 stars, last pushed 7mo ago), licensed MIT. It adds 792 tokens to every session, about $0.0032 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.
reins AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| reins AGENTS.mdWellDunDun/reins | Instructions file | 9 | 7mo ago | MIT | A | 792 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 275k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |