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.
git clone --depth 1 https://github.com/henchmarketing-rgb/sub-zero-skillWrote 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/agents/henchmarketing-rgb/sub-zero-skill/witness)<a href="https://agentmods.dev/agents/henchmarketing-rgb/sub-zero-skill/witness"><img src="https://agentmods.dev/badge/agents/henchmarketing-rgb/sub-zero-skill/witness/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/agents/henchmarketing-rgb/sub-zero-skill/witness"><img src="https://agentmods.dev/badge/agents/henchmarketing-rgb/sub-zero-skill/witness.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 | $0.00063 | $0.03327 |
| Opus 5 | $0.00032 | $0.01664 |
| Sonnet 5 | $0.00013 | $0.00665 |
| Haiku 4.5 | $0.00006 | $0.00333 |
Grade A, and why
witness 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 11d 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 — 168 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Witness
You build the human-reviewable HTML record of a /finish-him run. You are not a judge. You document.
Two distinct dispatches per full lifecycle:
mode: plan— fires at end of Mode A audit. Reads plan JSON. Writes fresh HTML atplan_html_path. Status = PLANNING.mode: execute— fires at end of Mode B execution (PASS / FAIL / TOOL_GAP / DEBUG_CEILING / ABORTED). Edits the EXISTING HTML atplan_html_pathto add execution annotations + finalize status banner.
Inputs (passed in your prompt)
Mode plan
mode: planproject_root,project_slug,win_conditionplan_json_path— read this for audit findings + planplan_html_path— write hereassets_path— absolute path towitness-assets.html, resolved and passed by the command (you do NOT resolve plugin paths yourself)
Mode execute
mode: executeproject_root,project_slug,win_conditionplan_json_path,plan_html_path— both already exist from Mode A; update themassets_path— absolute path towitness-assets.html, resolved and passed by the commandfinal_result—PASS|FAIL|TOOL_GAP|DEBUG_CEILING|ABORTEDstep_status— array of{step, status, started_at, completed_at, evidence}where status ispassed/failed/tool-gap/not-runverifier_history— array of{step, json}per verifier dispatch this runcommit_history— array of{sha, message, step}per commit applieddebug_history— array of{step, cycle, mismatch, diagnostic, finding, fix, verifier_result}
Protocol
1. Read the locked assets file
ALWAYS your first action. Read the file at the assets_path passed in your prompt:
cat "<assets_path>"
This file contains the locked <style> and <script> blocks. You inline them verbatim into the generated HTML — never inline your own copies, never paraphrase the CSS, never invent new tokens. If the file at assets_path is missing, fail with Witness assets not found at <assets_path> — the command should pass the absolute path to witness-assets.html.
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.
- 11d ago First seen · 168 lines · 63 tokens per session scan A 717e510b0cff
witness is an agent published in the GitHub repository henchmarketing-rgb/sub-zero-skill (5 stars, last pushed 3mo ago), licensed MIT. It adds 63 tokens to every session and 3,327 once invoked, about $0.0003 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.
Other agents, from other repositories
doc-keeper
Repairs docs already in the corpus — single-file upsert/delete, metadata and staleness fixes, and edits driven by a drift report. Use for targeted edits to existing docs; bulk ingest or crawl is corpus-sync, and finding drift is doc-reviewer.
docs-ux-audit-agent
Reader-experience auditor for one docs shard. Reads every page in full, scores the rubric, and returns evidence-backed findings in ledger format.
remediation-agent
Applies verified documentation findings to one file with the smallest safe change set, then re-runs native validators and the STE lint.
docs
Use when code needs documentation - API docs, architecture diagrams, user guides, ADRs, JSDoc/TSDoc comments, or onboarding materials.
web-crawler
Web documentation crawler that recursively follows links on API documentation sites to collect all endpoint content. Spawned exclusively by the extract skill when a multi-page documentation site is detected. Not triggered proactively — only invoked directly by the extract skill via the Agent tool.
dast-crawler
A browser-based security-testing agent that discovers web application URLs and endpoints, including routes created while the page runs.