eval-harness SKILL.md skillA
eval-harness from affaan-m/ecc is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add affaan-m/ecc/eval-harness@git:20260918.c752aacPins git:20260918.c752aac in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- affaan-m/ecc
- Path
.agents/skills/eval-harness/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260918.c752aac, committed Sep 18, 2026
- First version recorded
- Feb 25, 2026
- Size
- 5,610 bytes
- Repository stars
- 284,510
- License
- MIT
Formal evaluation framework for Claude Code sessions implementing eval-driven development (EDD) principles. Use when a Claude Code workflow needs a formal eval before it is trusted or changed.
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
# Eval Harness Skill A formal evaluation framework for Claude Code sessions, implementing eval-driven development (EDD) principles. ## When to Activate - Setting up eval-driven development (EDD) for AI-assisted workflows - Defining pass/fail criteria for Claude Code task completion - Measuring agent reliability with pass@k metrics - Creating regression test suites for prompt or agent changes - Benchmarking agent performance across model versions ## Philosophy Eval-Driven Development treats evals as the "unit tests of AI development": - Define expected behavior BEFORE implementation - Run evals continuously during development - Track regressions with each change - Use pass@k metrics for reliability measurement ## Eval Types ### Capability Evals Test if Claude can do something it couldn't before: ```markdown [CAPABILITY EVAL: feature-name] Task: Description of what Claude should accomplish Success Criteria: - [ ] Criterion 1 - [ ] Criterion 2 - [ ] Criterion 3 Expected Output: Description of expected result ``` ### Regression Evals Ensure changes don't break existing functionality: ```markdown [REGRESSION EVAL: feature-name] Baseline: SHA or checkpoint name Tests: …
Read the whole file at its exact version.
How to install
mdr add affaan-m/ecc/eval-harness@sha256:49a5a10975860bb2The line at the top of this page pins the label git:20260918.c752aac, 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_2w42hvwfjz54rcvv)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Feb 25, 2026 and Sep 18, 2026, about one every 68 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260918.c752aac latest | 2026-09-18 | c752aac | 5,610 B | A | view · diff |
| git:20260812.d29cf65 | 2026-08-12 | d29cf65 | 5,597 B | A | view · diff |
| git:20260429.d89f8d8 | 2026-04-29 | d89f8d8 | 5,511 B | A | view · diff |
| git:20260225.d70bab8 | 2026-02-25 | d70bab8 | 5,515 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 (5610 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
affaan-m/ecc · 284,510 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_2w42hvwfjz54rcvv GET https://markdownregistry.com/api/v1/resolve?ref=affaan-m/ecc/eval-harness GET https://markdownregistry.com/api/v1/blob/49a5a10975860bb2d7e3c4e260ff19b6580e43f5fbc7770b32dece02dde48e49
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.