Borrowing it
Nothing to install: this file belongs to amondnet/vercel-action. 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/amondnet/vercel-action/master/AGENTS.mdgit clone --depth 1 https://github.com/amondnet/vercel-actionWrote 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/amondnet/vercel-action/agents-md)<a href="https://agentmods.dev/instructions/amondnet/vercel-action/agents-md"><img src="https://agentmods.dev/badge/instructions/amondnet/vercel-action/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/amondnet/vercel-action/agents-md"><img src="https://agentmods.dev/badge/instructions/amondnet/vercel-action/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 | $0.00856 | $0.00856 |
| Opus 5.5 | $0.00342 | $0.00342 |
| Sonnet 5.5 | $0.00171 | $0.00171 |
| Haiku 4.5 | $0.00086 | $0.00086 |
Grade A, and why
vercel-action 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 — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Problem definition → small, safe change → change review → refactor — repeat the loop.
Mandatory Rules
- Before changing anything, read the relevant files end to end, including all call/reference paths.
- Keep tasks, commits, and PRs small.
- If you make assumptions, record them in the Issue/PR/ADR.
- Never commit or log secrets; validate all inputs and encode/normalize outputs.
- Avoid premature abstraction and use intention-revealing names.
- Compare at least two options before deciding.
Mindset
- Think like a senior engineer.
- Don’t jump in on guesses or rush to conclusions.
- Always evaluate multiple approaches; write one line each for pros/cons/risks, then choose the simplest solution.
Code & File Reference Rules
- Read files thoroughly from start to finish (no partial reads).
- Before changing code, locate and read definitions, references, call sites, related tests, docs/config/flags.
- Do not change code without having read the entire file.
- Before modifying a symbol, run a global search to understand pre/postconditions and leave a 1–3 line impact note.
Required Coding Rules
- Before coding, write a Problem 1-Pager: Context / Problem / Goal / Non-Goals / Constraints.
- Enforce limits: file ≤ 300 LOC, function ≤ 50 LOC, parameters ≤ 5, cyclomatic complexity ≤ 10. If exceeded, split/refactor.
- Prefer explicit code; no hidden “magic.”
- Follow DRY, but avoid premature abstraction.
- Isolate side effects (I/O, network, global state) at the boundary layer.
- Catch only specific exceptions and present clear user-facing messages.
- Use structured logging and do not log sensitive data (propagate request/correlation IDs when possible).
- Account for time zones and DST.
Testing Rules
- New code requires new tests; bug fixes must include a regression test (write it to fail first).
- Tests must be deterministic and independent; replace external systems with fakes/contract tests.
- Include ≥1 happy path and ≥1 failure path in e2e tests.
- Proactively assess risks from concurrency/locks/retries (duplication, deadlocks, etc.).
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 · 85 lines · 856 tokens per session scan A 052ddd2f6ad2
vercel-action AGENTS.md is an instructions file published in the GitHub repository amondnet/vercel-action (764 stars, last pushed 3mo ago), licensed MIT. It adds 856 tokens to every session, about $0.0034 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.
vercel-action AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| vercel-action AGENTS.mdamondnet/vercel-action | Instructions file | 764 | 3mo ago | MIT | A | 856 | 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 |