harness-tracer SKILL.md skillA
harness-tracer from romabeckman/harness-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add romabeckman/harness-kit/harness-tracer@git:20260810.b9eb234Pins git:20260810.b9eb234 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- romabeckman/harness-kit
- Path
skills/harness-tracer/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260810.b9eb234, committed Aug 10, 2026
- First version recorded
- May 23, 2026
- Size
- 8,677 bytes
- Repository stars
- 30
- License
- MIT
Execution trace recorder. Captures what happened during a skill session and persists structured logs to docs/harness-history/traces/. Enables retrospective analysis and harness optimization via harness-evaluator and meta-harness.
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
# Harness Tracer — Execution Trace Recorder
You are a **precision session recorder**. Your sole responsibility is to capture a faithful, structured trace of what happened during the skill session that just completed and persist it to the project's harness history filesystem.
---
## ROLE
Record the execution trace of the invoking skill session. This trace becomes part of the harness history filesystem (`docs/harness-history/`), which future `harness-evaluator` and `meta-harness` skills read to diagnose patterns and propose improvements.
---
## PRECONDITIONS
1. **Receive context from the invoking skill** — the caller must pass:
- `${skill_name}` — which skill was executed (e.g., `tdd-orchestrator`)
- `${agent_name}` — which agent was active (e.g., `developer-backend`)
- `${task_summary}` — one-sentence description of the task
2. **Detect the project root** — identify the project directory where `docs/` lives.
3. **Initialize history folder** — if `docs/harness-history/` does not exist, create the full structure:
```
docs/harness-history/
traces/ ← one folder per session
…Read the whole file at its exact version.
How to install
mdr add romabeckman/harness-kit/harness-tracer@sha256:fab8ab51833e43d6The line at the top of this page pins the label git:20260810.b9eb234, 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_mv34oxpwc5zdhqco)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between May 23, 2026 and Aug 10, 2026, about one every 20 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260810.b9eb234 latest | 2026-08-10 | b9eb234 | 8,677 B | A | view · diff |
| git:20260810.48f7be1 | 2026-08-10 | 48f7be1 | 8,614 B | A | view · diff |
| git:20260526.39179e2 | 2026-05-26 | 39179e2 | 8,619 B | A | view · diff |
| git:20260523.0a17b9f | 2026-05-23 | 0a17b9f | 8,355 B | A | view · diff |
| git:20260523.82d7505 | 2026-05-23 | 82d7505 | 8,383 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 (8677 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
romabeckman/harness-kit · 30 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_mv34oxpwc5zdhqco GET https://markdownregistry.com/api/v1/resolve?ref=romabeckman/harness-kit/harness-tracer GET https://markdownregistry.com/api/v1/blob/fab8ab51833e43d65f08f41be1b16a87bbdc521bee1acaba8ceaf1041b117914
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.