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Debug Buttercup · trailofbits | DecimalAI

devopsby trailofbits

Debug Buttercup

trailofbits/debug-buttercup

Source trailofbits/skills ↗License CC-BY-SA-4.0

Debugs the Buttercup CRS (Cyber Reasoning System) running on Kubernetes.

SkillScore68Maintained

Automatic

DevOps & SRE pack

Last verified 8/10/2026

What it changes

Passed 14 of 21 test cases with the skill, and 3 of 21 without it.

Without skill14%

With skill68%

Checks it passed that the model alone missed

executes the script at path scripts/diagnose.sh
runs du -sh /scratch/* to measure scratch directory size
uses HLEN tasks_registry to query total task registry count

and 19 more in the full report

12 fixed3 passed either way7 still failing0 broke

Pass-rate lift: +55 pp
Tokens: +72%
Agent turns: 0%
Response time: -53%

Model gemini-3.6-flashMeasured 8/10/2026v115 of 22 cases passed with skill · 21 comparable

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/trailofbits-debug-buttercup/SKILL.md https://app.decimal.ai/s/trailofbits-debug-buttercup/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add trailofbits-debug-buttercup, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/trailofbits-debug-buttercup/ and pins it in .decimal/skills.lock

decimalai skills add trailofbits-debug-buttercup

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/trailofbits-debug-buttercup/SKILL.md https://app.decimal.ai/s/trailofbits-debug-buttercup/SKILL.md

Raw file: /s/trailofbits-debug-buttercup/SKILL.md ↗ · machine-readable summary at /s/trailofbits-debug-buttercup.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 11 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 11

Prompt

Instead of running manual kubectl and redis-cli commands, we want to run the provided automated triage script to capture a full diagnostic snapshot including recent pod log dumps. What is the script path and required flag?

What was checked, without and with the skill
Checked	Without skill	With skill
executes the script at path scripts/diagnose.sh	Missed	Passed
passes the --full flag to include log dumps from all pods	Passed	Passed

case-21 · gemini-3.6-flash · 8/10/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md268 lines4 filesincludes scripts

Debug Buttercup

When to Use

Pods in the crs namespace are in CrashLoopBackOff, OOMKilled, or restarting
Multiple services restart simultaneously (cascade failure)
Redis is unresponsive or showing AOF warnings
Queues are growing but tasks are not progressing
Nodes show DiskPressure, MemoryPressure, or PID pressure
Build-bot cannot reach the Docker daemon (DinD failures)
Scheduler is stuck and not advancing task state
Health check probes are failing unexpectedly
Deployed Helm values don't match actual pod configuration

When NOT to Use

Deploying or upgrading Buttercup (use Helm and deployment guides)
Debugging issues outside the crs Kubernetes namespace
Performance tuning that doesn't involve a failure symptom

Namespace and Services

All pods run in namespace crs. Key services:

Layer	Services
Infra	redis, dind, litellm, registry-cache
Orchestration	scheduler, task-server, task-downloader, scratch-cleaner
Fuzzing	build-bot, fuzzer-bot, coverage-bot, tracer-bot, merger-bot
Analysis	patcher, seed-gen, program-model, pov-reproducer
Interface	competition-api, ui

Triage Workflow

Always start with triage. Run these three commands first:

# 1. Pod status - look for restarts, CrashLoopBackOff, OOMKilled
kubectl get pods -n crs -o wide

Track record

Benchmark

14 / 21

test cases passed, vs 3 / 21 without

Adoption

Users: 3
Times used: 60

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

trailofbits / skills

plugins/debug-buttercup/skills/debug-buttercup/SKILL.md

View on GitHub ↗

License CC-BY-SA-4.0Imported 8/3/2026Version v1Bundled 3 files · scripts

Other skills for the same job

Published skills whose descriptions closely match this one, with their headline benchmark lift.

debug-buttercupAll pods run in namespace crs. Use when pods in the crs namespace are in CrashLoopBackOff, OOMKilled, or restarting, multiple services restart simultaneously (cascade failure), or redis is unresponsive or showing AOF warnings.Near-identical description+59 pp pass-rate lift

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Debug Buttercup

When to Use

When NOT to Use

Namespace and Services

Triage Workflow

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

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