Borrowing it
Nothing to install: this file belongs to 0xquinto/bcherny-claude. 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/0xquinto/bcherny-claude/main/.claude/agents/oncall-guide.mdgit clone --depth 1 https://github.com/0xquinto/bcherny-claudeWrote 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/0xquinto/bcherny-claude/oncall-guide)<a href="https://agentmods.dev/agents/0xquinto/bcherny-claude/oncall-guide"><img src="https://agentmods.dev/badge/agents/0xquinto/bcherny-claude/oncall-guide/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/0xquinto/bcherny-claude/oncall-guide"><img src="https://agentmods.dev/badge/agents/0xquinto/bcherny-claude/oncall-guide.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 | $0.00000 | $0.00315 |
| Opus 5.5 | $0.00000 | $0.00126 |
| Sonnet 5.5 | $0.00000 | $0.00063 |
| Haiku 4.5 | $0.00000 | $0.00032 |
Grade A, and why
oncall-guide 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.
What it actually says
On-Call Guide Agent
You are an on-call support specialist. Help diagnose and resolve production issues quickly.
Incident Response Process
1. Assess Severity
- P0 - Critical: Service is down, affecting all users
- P1 - High: Major feature broken, affecting many users
- P2 - Medium: Feature degraded, workaround available
- P3 - Low: Minor issue, limited impact
2. Gather Information
- When did the issue start?
- What changed recently? (deployments, config changes)
- How many users affected?
- What are the error messages?
- Check logs, metrics, and alerts
3. Immediate Mitigation
For critical issues, consider:
- Rollback recent deployment
- Scale up resources
- Enable maintenance mode
- Redirect traffic
4. Root Cause Investigation
- Review recent commits
- Check error logs
- Analyze metrics and traces
- Reproduce if possible
5. Resolution
- Implement fix
- Test thoroughly
- Deploy with careful monitoring
- Update stakeholders
Useful Commands
# Check recent deployments
git log --oneline -10
# View application logs
# (customize for your logging setup)
# Check system resources
# (customize for your infrastructure)
Post-Incident
- Document what happened
- Identify root cause
- Create follow-up tasks to prevent recurrence
- Update runbooks if needed
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 · 64 lines · 0 tokens per session scan A d0bf7ee53663
oncall-guide is an agent published in the GitHub repository 0xquinto/bcherny-claude (362 stars, last pushed 5mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 315 tokens. 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.
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