copilot-api AGENTS.md

Repository instructions for copilot-api, a TypeScript project using Bun, a JavaScript runtime and test tool. They describe its build, development, linting, testing, module, typing, and naming conventions.

In plain words
What is it for?
Use them when building, running, linting, testing, or editing the project's TypeScript source and test files.
Why use it?
They give coding agents the commands and project rules needed to make changes that fit the existing codebase. They also reduce avoidable errors such as unused imports, loose types, and incorrect module syntax.

Instructions file for CodexOpenCode

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add instructions/ericc-ch/copilot-api/agents-md
Clone the repo
git clone --depth 1 https://github.com/ericc-ch/copilot-api

Made for: Codex, OpenCode.

Per session 441 This file is loaded in full into every session.
When invoked 441 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.00441 $0.00441
Opus 5 $0.00220 $0.00220
Sonnet 5 $0.00088 $0.00088
Haiku 4.5 $0.00044 $0.00044

Measured yesterday against content hash 690864503b95, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

copilot-api 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 yesterday.

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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

AGENTS.md · 48 lines

What it actually says

AGENTS.md

Build, Lint, and Test Commands

  • Build:
    bun run build (uses tsup)
  • Dev:
    bun run dev
  • Lint:
    bun run lint (uses @echristian/eslint-config)
  • Lint & Fix staged files:
    bunx lint-staged
  • Test all:
    bun test
  • Test single file:
    bun test tests/claude-request.test.ts
  • Start (prod):
    bun run start

Code Style Guidelines

  • Imports:
    Use ESNext syntax. Prefer absolute imports via ~/* for src/* (see tsconfig.json).
  • Formatting:
    Follows Prettier (with prettier-plugin-packagejson). Run bun run lint to auto-fix.
  • Types:
    Strict TypeScript (strict: true). Avoid any; use explicit types and interfaces.
  • Naming:
    Use camelCase for variables/functions, PascalCase for types/classes.
  • Error Handling:
    Use explicit error classes (see src/lib/error.ts). Avoid silent failures.
  • Unused:
    Unused imports/variables are errors (noUnusedLocals, noUnusedParameters).
  • Switches:
    No fallthrough in switch statements.
  • Modules:
    Use ESNext modules, no CommonJS.
  • Testing:
    Use Bun's built-in test runner. Place tests in tests/, name as *.test.ts.
  • Linting:
    Uses @echristian/eslint-config (see npm for details). Includes stylistic, unused imports, regex, and package.json rules.
  • Paths:
    Use path aliases (~/*) for imports from src/.

This file is tailored for agentic coding agents. For more details, see the configs in eslint.config.js and tsconfig.json. No Cursor or Copilot rules detected.

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. yesterday First seen · 48 lines · 441 tokens per session scan A 690864503b95

Subscribe to this mod's changes

copilot-api AGENTS.md is an instructions file published in the GitHub repository ericc-ch/copilot-api (4,103 stars, last pushed 9mo ago), licensed MIT. It adds 441 tokens to every session, about $0.0022 per session on Opus 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.