Diagnosis loop for hard bugs and performance regressions. Use when the user says "diagnose"/"debug this", or reports something broken/throwing/failing/slow.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Diagnosing Bugs
Diagnosis loop for hard bugs and performance regressions. Use when the user says "diagnose"/"debug this", or reports something broken/throwing/failing/slow.
This skill is imported from `mattpocock/skills` (MIT) and is **model-invoked** upstream.
## When to use this skill
- Diagnosis loop for hard bugs and performance regressions.
- Use when the user says "diagnose"/"debug this", or reports something broken/throwing/failing/slow.
## Instructions
## Diagnosing Bugs
A discipline for hard bugs. Skip phases only when explicitly justified.
When exploring the codebase, read `CONTEXT.md` (if it exists) to get a clear mental model of the relevant modules, and check ADRs in the area you're touching.
### Redact
This skill has you show commands, outputs and captured artifacts. **Redact every secret first**: write `<REDACTED>` in its place. Build loops against env vars, so the credential stays in the environment rather than in what you show. Captured artifacts carry auth headers: quote only the lines that carry the signal.
If the redacted output is not enough to diagnose the bug, say so and ask the user.
### Phase 1: Build a feedback loop
…
The line at the top of this page pins the label v1.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
GET https://markdownregistry.com/api/v1/artifacts/art_3jb26iowo76pciax
GET https://markdownregistry.com/api/v1/resolve?ref=akillness/jeo-skills/diagnosing-bugs
GET https://markdownregistry.com/api/v1/blob/7db35cf77d39fc1d32fd2bf56efdae13f0dd0313a490547b82f68c19fc4cfcb2
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
akillness/jeo-skills · .agent-skills/a2a-protocol/SKILL.md · Agent-to-Agent horizontal messaging — Linux Foundation AAIF 2026 standard. Use when multiple agents across…
akillness/jeo-skills · .agent-skills/academic-research/SKILL.md · Full academic research pipeline from discovery to publication — 4 reference pipelines, 27 modes, 39-agent ensemble…
akillness/jeo-skills · .agent-skills/agent-beacon/SKILL.md · Operate Asymptote-Labs/agent-beacon, the cross-harness coding-agent session history and self-improving memory layer…
akillness/jeo-skills · .agent-skills/agent-observability/SKILL.md · Instrument LLM agents with traces, metrics, and replay. Use when an agent in production is silently failing…
akillness/jeo-skills · .agent-skills/agent-principles/SKILL.md · Core principles for collaborative development with AI agents. Defines divide-and-conquer, context management…
akillness/jeo-skills · .agent-skills/agent-pulse/SKILL.md · Operate and extend barretlee/agent-pulse, the evidence-backed AI industry intelligence system: inspect source catalog…
kunolu/640-skills · sbtd-workflow-onboard/assets/external-skills/stable/skills/diagnosing-bugs/SKILL.md · Diagnosis loop for hard bugs and performance regressions. Use when the user says "diagnose"/"debug this", or reports…
mxyhi/ok-skills · diagnosing-bugs/SKILL.md · Diagnosis loop for hard bugs and performance regressions. Use when the user says "diagnose"/"debug this", or reports…
asymmetric-al/core · .agents/skills/diagnosing-bugs/SKILL.md · Diagnosis loop for hard bugs and performance regressions. Use when the user says "diagnose"/"debug this", or reports…
oyadotai/oya-browser · .agents/skills/diagnosing-bugs/SKILL.md · This skill should be used when diagnosing a reported bug, intermittent failure, stuck operation, or performance…
oyadotai/oya-browser · .claude/skills/diagnosing-bugs/SKILL.md · This skill should be used when diagnosing a reported bug, intermittent failure, stuck operation, or performance…
jellydn/my-ai-tools · skills/diagnosing-bugs/SKILL.md · Build a tight, red-capable feedback loop before diagnosing failures, then minimize, test ranked hypotheses, and lock…
jellydn/my-ai-tools · configs/amp/plugins/my-ai-tools-skills/skills/diagnosing-bugs/SKILL.md · Build a tight, red-capable feedback loop before diagnosing failures, then minimize, test ranked hypotheses, and lock…
