agent-harness SKILL.md skillA
agent-harness from borghei/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add borghei/claude-skills/agent-harness@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- borghei/claude-skills
- Path
engineering/agent-harness/SKILL.md- Versions recorded
- 3
- Latest version
- v1.0.0, committed Oct 23, 2026
- First version recorded
- Jul 21, 2026
- Size
- 14,327 bytes
- Repository stars
- 1,075
- License
- a license file GitHub does not identify
Test and evaluation harness for AI agents — scenario suites, deterministic replay, regression diffing, cost and latency budgets. Use when agent quality is vibe-checked, before shipping a prompt or model change, or when evals drift.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Agent Harness Most agents ship on vibes: someone tries eight prompts, the output looks good, it goes to production, and the next prompt tweak silently breaks a refusal nobody re-tested. This skill builds the harness around an agent so its behaviour becomes measurable — scenario suites with structural assertions, deterministic replay of recorded tool calls, paired regression diffing across prompt and model changes, and per-scenario cost and latency budgets. The tools here score an agent; they never invoke one, so they run offline on every commit. ## When to use this skill - An agent is going to production and the only quality evidence is manual spot-checking - A prompt, tool schema, or model version is changing and you need to know what broke - Two model or configuration options need a defensible comparison, not a demo - An incident happened and you need the behaviour encoded as a permanent regression test - Agent cost or latency is climbing across releases and nobody can point to when - An existing eval suite reports a healthy pass rate that nobody trusts ## Inputs the skill expects - The agent's tool inventory — names, arguments, and which tools are irreversible …
Read the whole file at its exact version.
How to install
mdr add borghei/claude-skills/agent-harness@sha256:9620fdb38bf48919The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_beze676marnpmibs)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jul 21, 2026 and Oct 23, 2026, about one every 47 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-10-23 | 1b15d44 | 14,327 B | A | view · diff |
| v1.0.0 | 2026-10-23 | 2b5180a | 12,414 B | A | view · diff |
| v1.0.0 | 2026-07-21 | 9cb3eb9 | 12,317 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (14327 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
borghei/claude-skills · 1,075 stars · license a license file GitHub does not identify · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_beze676marnpmibs GET https://markdownregistry.com/api/v1/resolve?ref=borghei/claude-skills/agent-harness GET https://markdownregistry.com/api/v1/blob/9620fdb38bf489191b034fd2758c589f0dba0328ab1f0bdca41ab5c3f8b06b20
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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