fuzz-harness-writing SKILL.md skillA
fuzz-harness-writing from outlinedriven/odin-claude-plugin is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add outlinedriven/odin-claude-plugin/fuzz-harness-writing@git:20260904.2014e73Pins git:20260904.2014e73 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- outlinedriven/odin-claude-plugin
- Path
plugins/odin-fuzzing/skills/fuzz-harness-writing/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260904.2014e73, committed Sep 4, 2026
- First version recorded
- Sep 3, 2026
- Size
- 4,022 bytes
- Repository stars
- 40
- License
- Apache-2.0
Use when a user needs to create or improve a deterministic, engine-agnostic fuzz harness for raw or structured target inputs. Not for coverage measurement: use fuzzing-coverage-analysis.
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
# Fuzz harness writing ## Contract | Field | Bound contract | |---|---| | Trigger | User needs to create or improve a deterministic fuzz harness for raw or structured target inputs. | | Authority | Reversible local: writes only the fuzz harness, target adapter code, corpus entries, and crash artifacts under the project tree; rollback is deleting the added harness, adapter, corpus, and artifact files. No remote mutation. No VCS commit required. | | Side effect | Local writes to fuzz harness, target adapter code, corpus, and crash artifacts. | | Done | The harness executes representative and boundary inputs deterministically, reaches the intended API, and preserves reproducible crashes. | ## Not for - Coverage measurement or plateau analysis: use fuzzing-coverage-analysis. - Patching the system under test to bypass obstacles: use fuzzing-obstacles. - Remote, credential, publish, deploy, or irreversible changes. ## Inputs Required: - Target API entry point to fuzz. - Input shape (raw bytes or structured data). - Language/runtime and fuzzing engine (needed for invocation and harness format). Optional: - Existing corpus. - Seed dictionary. ## Procedure …
Read the whole file at its exact version.
How to install
mdr add outlinedriven/odin-claude-plugin/fuzz-harness-writing@sha256:d69d796c8575bde4The line at the top of this page pins the label git:20260904.2014e73, 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_nwkksful36leyuph)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Sep 3, 2026 and Sep 4, 2026, more than one a day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260904.2014e73 latest | 2026-09-04 | 2014e73 | 4,022 B | A | view · diff |
| git:20260903.31c840c | 2026-09-03 | 31c840c | 4,210 B | A | view · diff |
| git:20260903.c54504d | 2026-09-03 | c54504d | 4,185 B | A | view · diff |
| git:20260903.ac7d02a | 2026-09-03 | ac7d02a | 4,194 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 (4022 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
outlinedriven/odin-claude-plugin · 40 stars · license Apache-2.0 · pushed 2026-09-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_nwkksful36leyuph GET https://markdownregistry.com/api/v1/resolve?ref=outlinedriven/odin-claude-plugin/fuzz-harness-writing GET https://markdownregistry.com/api/v1/blob/d69d796c8575bde4d7f50b608389c9c071ac20d9e05bf47765c14812ee3a626d
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.