harpist: Instructions file for Codex

AGENTS.md

harpist AGENTS.md is an instructions file for Codex, OpenCode from kenobi-ai/harpist. It costs 136 tokens per session, scanned A, original, MIT.

Repository instructions for Harpist, a project that documents the APIs behind websites and replays them through an agent. They define required checks, dependency conventions, and limits on running services.

In plain words
What is it for?
They guide agents when changing or reviewing Harpist code, including running its formatting and checking commands before reporting work as complete.
Why use it?
They reduce mistakes such as skipping validation, adding dependencies inconsistently, or starting an unapproved development service.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is kenobi-ai/harpist's own configuration. It tells Codex and OpenCode how to work on harpist itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything harpist configures →

Reuse

Borrowing it

Nothing to install: this file belongs to kenobi-ai/harpist. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/kenobi-ai/harpist/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/kenobi-ai/harpist

Made for: Codex, OpenCode.

Wrote 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.

agentmods badge for harpist AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/kenobi-ai/harpist/agents-md/github.svg)](https://agentmods.dev/instructions/kenobi-ai/harpist/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/kenobi-ai/harpist/agents-md"><img src="https://agentmods.dev/badge/instructions/kenobi-ai/harpist/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.

agentmods 80×15 button for harpist AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/kenobi-ai/harpist/agents-md"><img src="https://agentmods.dev/badge/instructions/kenobi-ai/harpist/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 136 This file is loaded in full into every session.
When invoked 136 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00136 $0.00136
Opus 5.5 $0.00054 $0.00054
Sonnet 5.5 $0.00027 $0.00027
Haiku 4.5 $0.00014 $0.00014

Measured 2mo ago against content hash af9f872d1ab9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

harpist 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.

AGENTS.md · 8 lines

What it actually says

Repository Instructions

  • Before reporting code or config work as done, run bun run fix and then bun run check.
  • If bun run check reports fixable Biome diagnostics, run bun run fix again before rerunning bun run check.
  • Keep biome.json close to Biome defaults. Prefer small repo-specific switches over enumerating rules.
  • Keep package dependencies on the root Bun catalog. External dependencies should use catalog:; internal workspace packages should use workspace:*.
  • Do not start a dev service for this repo. If a running service is needed and none is already available, ask the user to start it.
Changes

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.

  1. 2mo ago First seen · 8 lines · 136 tokens per session scan A af9f872d1ab9

Subscribe to this mod's changes

harpist AGENTS.md is an instructions file published in the GitHub repository kenobi-ai/harpist (9 stars, last pushed 2mo ago), licensed MIT. It adds 136 tokens to every session, about $0.0005 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.

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