compound-docs

compound-docs is a skill for Claude Code from davekilleen/Dex. It costs 17 tokens per session (3,359 once invoked), scanned A, original, MIT.

A documentation workflow for recording solved technical problems with YAML frontmatter, which is structured information at the top of a file.

In plain words
What is it for?
Use it to turn completed problem-solving work into searchable reference documents.
Why use it?
It makes past solutions easier to categorise and find when a similar problem occurs again.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: reads .claude/ paths; mentions subagents.

Part of the compound-engineering plugin — 17 skills, 19 commands shipped together

Good fit Use it to turn completed problem-solving work into searchable reference documents.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/davekilleen/dex/compound-docs
Install

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.

Any agent
npx skills add davekilleen/Dex --skill compound-docs
Clone the repo
git clone --depth 1 https://github.com/davekilleen/Dex

Made for: Claude Code.

Or install compound-engineering, the plugin that ships this one along with the rest of its 17 skills, 19 commands.

Wrote 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.

agentmods badge for compound-docs

README.md
[![agentmods](https://agentmods.dev/badge/skills/davekilleen/dex/compound-docs/github.svg)](https://agentmods.dev/skills/davekilleen/dex/compound-docs)
Your own site
<a href="https://agentmods.dev/skills/davekilleen/dex/compound-docs"><img src="https://agentmods.dev/badge/skills/davekilleen/dex/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.

agentmods 80×15 button for compound-docs

Your own site · 80×15
<a href="https://agentmods.dev/skills/davekilleen/dex/compound-docs"><img src="https://agentmods.dev/badge/skills/davekilleen/dex/compound-docs.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,359 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00017 $0.03359
Opus 5.5 $0.00007 $0.01344
Sonnet 5.5 $0.00003 $0.00672
Haiku 4.5 $0.00002 $0.00336

Measured 2mo ago against content hash 508c65f5118a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

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 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.

Origin

Copies of this mod

4 near-identical copies found in the catalogue:

.claude/plugins/compound-engineering/skills/compound-docs/SKILL.md · 511 lines

How it starts

The opening of the file, as written. The whole thing — 511 lines — stays where its author put it; the contents beside it link to each section on GitHub.

compound-docs Skill

Purpose: Automatically document solved problems to build searchable institutional knowledge with category-based organization (enum-validated problem types).

Overview

This skill captures problem solutions immediately after confirmation, creating structured documentation that serves as a searchable knowledge base for future sessions.

Organization: Single-file architecture - each problem documented as one markdown file in its symptom category directory (e.g., docs/solutions/performance-issues/n-plus-one-briefs.md). Files use YAML frontmatter for metadata and searchability.


<critical_sequence name="documentation-capture" enforce_order="strict">

7-Step Process

Auto-invoke after phrases:

  • "that worked"
  • "it's fixed"
  • "working now"
  • "problem solved"
  • "that did it"

OR manual: /doc-fix command

Non-trivial problems only:

  • Multiple investigation attempts needed
  • Tricky debugging that took time
  • Non-obvious solution
  • Future sessions would benefit

Skip documentation for:

  • Simple typos
  • Obvious syntax errors
  • Trivial fixes immediately corrected

Extract from conversation history:

Required information:

  • Module name: Which module or component had the problem
  • Symptom: Observable error/behavior (exact error messages)
  • Investigation attempts: What didn't work and why
  • Root cause: Technical explanation of actual problem
  • Solution: What fixed it (code/config changes)
  • Prevention: How to avoid in future

Environment details:

  • Rails version
  • Stage (0-6 or post-implementation)
  • OS version
  • File/line references

BLOCKING REQUIREMENT: If critical context is missing (module name, exact error, stage, or resolution steps), ask user and WAIT for response before proceeding to Step 3:

I need a few details to document this properly:

1. Which module had this issue? [ModuleName]
2. What was the exact error message or symptom?
3. What stage were you in? (0-6 or post-implementation)

[Continue after user provides details]

Read the full file on GitHub · 511 lines

Files

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.

Changes

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.

  1. 2mo ago First seen · 511 lines · 17 tokens per session scan A 508c65f5118a

Subscribe to this mod's changes

compound-docs is a skill published in the GitHub repository davekilleen/Dex (512 stars, last pushed 8d ago), licensed MIT. It adds 17 tokens to every session and 3,359 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 2026-08-30.

Related

compound-docs compared with skills from other repositories

compound-docs next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
compound-docsdavekilleen/DexSkill5128d agoMITA17Claude Code
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9router-web-searchdecolua/9routerSkill32k10d agoMITA74Claude Code, Codex
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track-managementwshobson/agentsSkill42k2d agoMITA44Claude Code