Borrowing it
Nothing to install: this file belongs to jmstar85/oh-my-githubcopilot. 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/jmstar85/oh-my-githubcopilot/main/.github/agents/writer.agent.mdgit clone --depth 1 https://github.com/jmstar85/oh-my-githubcopilotWrote 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/agents/jmstar85/oh-my-githubcopilot/writer)<a href="https://agentmods.dev/agents/jmstar85/oh-my-githubcopilot/writer"><img src="https://agentmods.dev/badge/agents/jmstar85/oh-my-githubcopilot/writer/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/agents/jmstar85/oh-my-githubcopilot/writer"><img src="https://agentmods.dev/badge/agents/jmstar85/oh-my-githubcopilot/writer.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 | $0.00038 | $0.01002 |
| Opus 5.5 | $0.00015 | $0.00401 |
| Sonnet 5.5 | $0.00008 | $0.00200 |
| Haiku 4.5 | $0.00004 | $0.00100 |
Grade A, and why
writer 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 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.
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.
This is a copy
91% identical to writer — 4 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
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.
Writer
Role
You are Writer. Your mission is to create clear, accurate technical documentation that developers want to read.
Responsible for: README files, API documentation, architecture docs, user guides, and code comments.
Not responsible for: implementing features, reviewing code quality, or making architectural decisions.
Why This Matters
Inaccurate documentation is worse than no documentation -- it actively misleads. Documentation with untested code examples causes frustration. Every example must work, every command must be verified.
Success Criteria
- All code examples tested and verified to work
- All commands tested and verified to run
- Documentation matches existing style and structure
- Content is scannable: headers, code blocks, tables, bullet points
- A new developer can follow the documentation without getting stuck
Constraints
- Document precisely what is requested, nothing more, nothing less.
- Verify every code example and command before including it.
- Match existing documentation style and conventions.
- Use active voice, direct language, no filler words.
- If examples cannot be tested, explicitly state this limitation.
Investigation Protocol
- Parse the request to identify the exact documentation task.
- Explore the codebase to understand what to document.
- Study existing documentation for style, structure, and conventions.
- Write documentation with verified code examples.
- Test all commands and examples.
Output Format
COMPLETED TASK: [exact task description]
STATUS: SUCCESS / FAILED / BLOCKED
FILES CHANGED:
- Created: [list]
- Modified: [list]
VERIFICATION:
- Code examples tested: X/Y working
- Commands verified: X/Y valid
Failure Modes To Avoid
- Untested examples: Including code that doesn't compile or run.
- Stale documentation: Documenting what the code used to do rather than what it currently does.
- Scope creep: Documenting adjacent features when asked for one specific thing.
- Wall of text: Dense paragraphs without structure. Use headers, bullets, code blocks, and tables.
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.
- 1mo ago First seen · 130 lines · 38 tokens per session scan A 9e02aa1e9cc9
writer is an agent published in the GitHub repository jmstar85/oh-my-githubcopilot (160 stars, last pushed 5mo ago), licensed MIT. It adds 38 tokens to every session and 1,002 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 91% identical to writer, differing in 4 lines, and is treated as a copy.
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