Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add testdouble/han/plugin install han-documentationWrote 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/testdouble/han/project-documentation)<a href="https://agentmods.dev/skills/testdouble/han/project-documentation"><img src="https://agentmods.dev/badge/skills/testdouble/han/project-documentation.svg" alt="Measured on agentmods" 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 | $0.00155 | $0.03073 |
| Opus 5 | $0.00077 | $0.01537 |
| Sonnet 5 | $0.00031 | $0.00615 |
| Haiku 4.5 | $0.00015 | $0.00307 |
Grade B, and why
project-documentation scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
1. Read the agent configuration file (`CLAUDE.md`, `AGENTS.md`, or equivalent) to understand its existing structure and How it starts
The opening of the file, as written. The whole thing — 204 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Project Context
- CLAUDE.md exists: !
find . -maxdepth 1 -name "CLAUDE.md" -type f - project-discovery.md: !
find . -maxdepth 3 -name "project-discovery.md" -type f - personal config directory: !
bash "${CLAUDE_PLUGIN_ROOT}/scripts/han-config-dir.sh" 2>/dev/null || echo "$HOME/.claude" - project .han/config.md: !
cat .han/config.md 2>/dev/null || echo ""
As your first action, use the Read tool on .han/config.md inside the personal config directory path above. A read
that returns no file is no personal configuration: continue silently. When that file or the project .han/config.md
probe supplies content, apply it per config-rule.md, which governs precedence
between the two files, relative-path resolution, and what to do with a file that reads but cannot be used.
Project Documentation
Readability. As you write the documentation, source the standard by invoking
han-communication:readability-guidance and apply it. The output is a committed file, so the standard applies at
generation time. Hold a named audience above the default: a technically-literate reader who needs to understand the
feature's behavior before reading or modifying its code. Scope that frame per section so the technical specifics the
reader needs are not simplified away.
Step 1: Evaluate and Gather Context
Guard check: If the request is about an architectural decision, suggest architectural-decision-record instead.
If it's about a coding convention, suggest coding-standard instead. Proceed only after confirming this is project
documentation.
Docs directory: Resolve project config: read CLAUDE.md's ## Project Discovery section for docs directory and
language; fall back to project-discovery.md; fall back to Glob default (docs/). Use the found docs directory with Glob
to enumerate existing .md files. If no docs directory was found, create docs/. The found language informs code fence
language identifiers in Step 3.
What ships with it
1 file 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.
- 3d ago First seen · 204 lines · 155 tokens per session scan B dbf7b931507c
project-documentation is a skill published in the GitHub repository testdouble/han (258 stars, last pushed 6d ago), licensed MIT. It adds 155 tokens to every session and 3,073 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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