doctree-mcp: Skill for Claude Code

.claude/skills/doc-write/SKILL.md

doc-write is a skill for Claude Code from joesaby/doctree-mcp. It costs 37 tokens per session (963 once invoked), scanned A, original, MIT.

A documentation-writing workflow for adding Markdown pages to the doctree-mcp knowledge base. It checks for similar pages, creates a document structure, and validates the result before writing.

In plain words
What is it for?
Use it to add a new wiki entry or merge new information into an existing entry after finding overlapping content.
Why use it?
It helps prevent duplicate pages and disorganised knowledge-base content. Writing is available only when WIKI_WRITE=1 is enabled.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

This is joesaby/doctree-mcp's own configuration. It tells Claude Code how to work on doctree-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything doctree-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to joesaby/doctree-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/joesaby/doctree-mcp/main/.claude/skills/doc-write/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/joesaby/doctree-mcp

Made for: Claude Code.

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 doc-write

README.md
[![agentmods](https://agentmods.dev/badge/skills/joesaby/doctree-mcp/doc-write.svg)](https://agentmods.dev/skills/joesaby/doctree-mcp/doc-write)
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<a href="https://agentmods.dev/skills/joesaby/doctree-mcp/doc-write"><img src="https://agentmods.dev/badge/skills/joesaby/doctree-mcp/doc-write.svg" alt="Measured on agentmods" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 963 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00037 $0.00963
Opus 5 $0.00018 $0.00481
Sonnet 5 $0.00007 $0.00193
Haiku 4.5 $0.00004 $0.00096

Measured 5d ago against content hash dee342565406, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

doc-write 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 5d 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.

.claude/skills/doc-write/SKILL.md · 115 lines

How it starts

The opening of the file, as written. The whole thing — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Write Documentation

Create a new markdown document in the knowledge base using the doctree-mcp wiki curation tools.

Requires WIKI_WRITE=1 in the MCP server configuration. If the write tools are unavailable, tell the user to add "WIKI_WRITE": "1" to their doctree env config.

Workflow

Follow these steps in order. Do NOT skip the duplicate check — it prevents content sprawl.

Step 1: Check for duplicates

Before writing anything, check if similar content already exists:

find_similar(content: "<the content you plan to write>")

If matches are found with overlap > 0.35UPDATE WORKFLOW:

  1. Read the existing doc — call navigate_tree(doc_id, root_node_id) to get the full content
  2. Decide what to keep vs. replace — identify sections that overlap with your new content
  3. Compose the merged content — write the full updated markdown (don't just append)
  4. Overwrite — call write_wiki_entry with the same path and overwrite: true:
write_wiki_entry(
  path: "<same path as existing file>",
  frontmatter: { ... },   ← keep existing frontmatter, update tags if needed
  content: "<full merged content>",
  overwrite: true
)

If overlap is below 0.35 — proceed to Step 2 (scaffold a new entry).

Step 2: Generate a scaffold

Get suggestions for path, frontmatter, and structure:

draft_wiki_entry(
  topic: "$ARGUMENTS",
  raw_content: "<the content to turn into a wiki entry>"
)

Review what comes back:

  • Suggested path — adjust if needed (e.g., put runbooks in runbooks/, guides in guides/)
  • Inferred frontmatter — type, category, tags derived from similar docs
  • Glossary hits — acronyms detected in the content
  • Duplicate warnings — similar docs that might overlap

Step 3: Dry-run validation

Validate the entry without writing to disk:

write_wiki_entry(
  path: "<path from step 2, adjusted if needed>",
  frontmatter: {
    "title": "<title>",
    "description": "<one-line summary>",
    "type": "<runbook|guide|reference|tutorial|architecture|adr|...>",
    "category": "<domain grouping>",
    "tags": ["<relevant>", "<terms>"]
  },
  content: "<full markdown content>",
  dry_run: true
)

Read the full file on GitHub · 115 lines

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. 5d ago First seen · 115 lines · 37 tokens per session scan A dee342565406

Subscribe to this mod's changes

doc-write is a skill published in the GitHub repository joesaby/doctree-mcp (1 stars, last pushed 2mo ago), licensed MIT. It adds 37 tokens to every session and 963 once invoked, about $0.0002 per session on Opus 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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