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 gaearon/woodshed --skill original-1.5git clone --depth 1 https://github.com/gaearon/woodshedWrote 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/gaearon/woodshed/original-1.5)<a href="https://agentmods.dev/skills/gaearon/woodshed/original-1.5"><img src="https://agentmods.dev/badge/skills/gaearon/woodshed/original-1.5/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/gaearon/woodshed/original-1.5"><img src="https://agentmods.dev/badge/skills/gaearon/woodshed/original-1.5.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 | $0.00042 | $0.03666 |
| Opus 5 | $0.00021 | $0.01833 |
| Sonnet 5 | $0.00008 | $0.00733 |
| Haiku 4.5 | $0.00004 | $0.00367 |
Grade A, and why
decision-graph 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 12d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- decision-graph — 86% identical, 16 lines differ
How it starts
The opening of the file, as written. The whole thing — 385 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Decision Graph Construction
You are building a deciduous decision graph - a DAG that captures the evolution of design decisions in a codebase.
Use the deciduous CLI (at ~/.cargo/bin/deciduous) to build the graph. Run deciduous commands in the current directory (not inside the source repo).
For git commands to explore commit history, use git -C <repo-path> to target the source repo.
CRITICAL: Only use information from the repository itself (commits, code, comments, tests). Do not use your prior knowledge about the project. Everything must be grounded in what you find in the repo.
Commit Exploration
Use a layered strategy to find all relevant commits:
Layer 1: See all commits. Start with the full list when building narratives.
git log --oneline --after="..." --before="..." -- path/
Layer 2: Keyword expansion. Once you have narratives, search for spelling variations and related terms you might have missed (e.g., "cache" → "caching", "cached", "LRU", "invalidate"). For each key identifier in your narratives, trace its full lifecycle:
- Introduction
- Changes and modifications
- Renames
- Deprecation or removal
- Replacement by other mechanisms
- Becoming stable/public API
If there's a feature flag controlling the feature, search for commits mentioning that flag.
Layer 3: Follow authors. If a narrative has a key author, check their commits ±1 month from known commits. They often work on related things.
DO NOT:
git log ... | head -100— NO. You will miss commits in the middle.git log ... | tail -200— NO. Same problem.- Start with keyword filtering — NO. You'll miss things with unexpected names.
DO:
- See all commits first, filter mentally while building narratives
- Include "remove", "delete", "disable", "deprecate" in keyword searches — removals explain transitions
- Check the commit count first (
| wc -l), but then see them all - Read full commit messages for any commit whose title mentions an identifier or concept relevant to your narrative — you need precise understanding of what happened to each one you care about
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.
- 12d ago First seen · 385 lines · 42 tokens per session scan A 680da9b78753
decision-graph is a skill published in the GitHub repository gaearon/woodshed (70 stars, last pushed 8mo ago), licensed MIT. It adds 42 tokens to every session and 3,666 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 2026-08-30.
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