Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add aegntic/compound-engineering --skill compound-docsgit clone --depth 1 https://github.com/aegntic/compound-engineeringWrote 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/skills/aegntic/compound-engineering/compound-docs)<a href="https://agentmods.dev/skills/aegntic/compound-engineering/compound-docs"><img src="https://agentmods.dev/badge/skills/aegntic/compound-engineering/compound-docs/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/skills/aegntic/compound-engineering/compound-docs"><img src="https://agentmods.dev/badge/skills/aegntic/compound-engineering/compound-docs.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 | $0.00017 | $0.00734 |
| Opus 5.5 | $0.00007 | $0.00294 |
| Sonnet 5.5 | $0.00003 | $0.00147 |
| Haiku 4.5 | $0.00002 | $0.00073 |
Grade A, and why
compound-docs 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.
How it starts
The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.
compound-docs Skill
Capture non-trivial solved problems as searchable documentation in docs/solutions/. Keep the file short, structured, and schema-valid so future sessions can actually find and trust it.
When to use
- A bug, migration issue, incident, or tricky setup problem is confirmed fixed.
- The solution required real investigation, multiple attempts, or a non-obvious insight.
- The team would benefit from preserving the failure mode, root cause, and prevention guidance.
- Skip trivial typos, obvious syntax mistakes, and fixes that needed no meaningful investigation.
Workflow
- Detect a confirmed fix. Auto-invoke on clear success phrases such as "that worked", "it's fixed", or "problem solved", or run manually.
- Gather the required context: module, exact symptom/error, failed attempts, root cause, fix, prevention guidance, file references, and relevant environment details.
- If critical context is missing, stop and ask for it before writing anything.
- Search
docs/solutions/for similar documents. Reuse or cross-link only when the root cause genuinely matches. - Build a filename as
[sanitized-symptom]-[module]-[YYYYMMDD].md. - Validate YAML frontmatter against
schema.yamlusing the enum guidance inreferences/yaml-schema.md. - Create the solution doc with
assets/resolution-template.md, then offer the post-capture menu.
Required context
- Module or subsystem name.
- Exact symptom or error message.
- Stage or execution context.
- What failed during investigation.
- Root cause and what changed to fix it.
- Prevention guidance and any follow-up actions.
Validation rules
problem_type,component,root_cause, andseveritymust match the schema exactly.- Use category mapping from
references/yaml-schema.mdto place the file underdocs/solutions/<category>/. - Block on invalid YAML, missing required fields, or vague symptoms.
- Include concrete examples or commands whenever the fix would be hard to repeat without them.
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 73 lines · 17 tokens per session scan A 2f1240df70f2
compound-docs is a skill published in the GitHub repository aegntic/compound-engineering (2 stars, last pushed 4mo ago), licensed MIT. It adds 17 tokens to every session and 734 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-31.
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