copilot-dev: Command for Claude Code

.github/prompts/oreilly-api-help.prompt.md

oreilly-api-help is a command for Claude Code, GitHub Copilot from timothywarner/copilot-dev. It costs 16 tokens per session (1,107 once invoked), scanned A, original, MIT.

A command that helps design unit tests, which test one small part of a program in isolation. It covers test file layout, naming, setup, cleanup, fixtures, and the Arrange-Act-Assert pattern.

In plain words
What is it for?
Use it to plan unit-test files, choose names, set up shared test data, and define test scenarios.
Why use it?
It removes guesswork about where tests belong and how to structure readable, maintainable test cases.

Command for Claude CodeGitHub Copilot

Written for Claude Code and GitHub Copilot: argument-hint in frontmatter, but also a Copilot chat mode or prompt. Also seen: model in frontmatter.

This is timothywarner/copilot-dev's own configuration. It tells Claude Code and GitHub Copilot how to work on copilot-dev 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 copilot-dev configures →

Reuse

Borrowing it

Nothing to install: this file belongs to timothywarner/copilot-dev. 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/timothywarner/copilot-dev/main/.github/prompts/oreilly-api-help.prompt.md
Clone the repo
git clone --depth 1 https://github.com/timothywarner/copilot-dev

Made for: Claude Code, GitHub Copilot.

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 oreilly-api-help

README.md
[![agentmods](https://agentmods.dev/badge/commands/timothywarner/copilot-dev/oreilly-api-help/github.svg)](https://agentmods.dev/commands/timothywarner/copilot-dev/oreilly-api-help)
Your own site
<a href="https://agentmods.dev/commands/timothywarner/copilot-dev/oreilly-api-help"><img src="https://agentmods.dev/badge/commands/timothywarner/copilot-dev/oreilly-api-help/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 oreilly-api-help

Your own site · 80×15
<a href="https://agentmods.dev/commands/timothywarner/copilot-dev/oreilly-api-help"><img src="https://agentmods.dev/badge/commands/timothywarner/copilot-dev/oreilly-api-help.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,107 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00016 $0.01107
Opus 5.5 $0.00006 $0.00443
Sonnet 5.5 $0.00003 $0.00221
Haiku 4.5 $0.00002 $0.00111

Measured 1mo ago against content hash 62ba129cb1ff, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

oreilly-api-help scanned grade A with 1 finding 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 1mo 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

### 2. Working curl examples
.github/prompts/oreilly-api-help.prompt.md · 130 lines

How it starts

The opening of the file, as written. The whole thing — 130 lines — stays where its author put it; the contents beside it link to each section on GitHub.

I want to help you find and use the right GitHub API endpoint for your goal.

Tell me what you're trying to accomplish

If you haven't already described your goal, please share it now. For example:

  • "I want to list all open pull requests in a repository"
  • "I want to create a GitHub Issue via the API"
  • "I want to fetch all members of a GitHub organization"

What I'll provide

For your goal, I'll give you:

1. The recommended endpoint

I'll tell you whether to use the GitHub REST API or GitHub GraphQL API and explain why, then give you the full endpoint path.

REST API is best for:

  • Simple CRUD operations on a single resource
  • When you don't need fine-grained field selection
  • Webhooks, Actions, and most automation tasks

GraphQL API is best for:

  • Fetching related data in a single request (e.g., PR + reviews + comments)
  • Reducing over-fetching when only a few fields are needed
  • Complex queries across multiple resource types

2. Working curl examples

REST example (listing open pull requests):

# Using a Personal Access Token (classic)
curl -L \
  -H "Accept: application/vnd.github+json" \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "X-GitHub-Api-Version: 2022-11-28" \
  "https://api.github.com/repos/OWNER/REPO/pulls?state=open&per_page=30"

GraphQL example (same data, fewer round trips):

curl -H "Authorization: bearer YOUR_TOKEN" \
     -H "Content-Type: application/json" \
     -X POST \
     -d '{"query": "{ repository(owner: \"OWNER\", name: \"REPO\") { pullRequests(states: OPEN, first: 30) { nodes { number title author { login } createdAt } } } }"}' \
     https://api.github.com/graphql

3. Authentication options

Method Best for How to use
Personal Access Token (classic) Personal scripts, local tools Authorization: Bearer ghp_...
Fine-grained PAT Scoped access to specific repos Authorization: Bearer github_pat_...
GitHub App + Installation Token Production apps, CI/CD Exchange JWT for installation token
OAuth App Third-party integrations OAuth 2.0 flow, user-delegated scopes
GITHUB_TOKEN GitHub Actions workflows Available automatically in Actions env

Read the full file on GitHub · 130 lines

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. 1mo ago First seen · 130 lines · 16 tokens per session scan A 62ba129cb1ff

Subscribe to this mod's changes

oreilly-api-help is a command published in the GitHub repository timothywarner/copilot-dev (46 stars, last pushed 1mo ago), licensed MIT. It adds 16 tokens to every session and 1,107 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-20.