deliver-edge-cases skillA
deliver-edge-cases is agent-read markdown (skill) from product-on-purpose/pm-skills: Documents edge cases, error states, boundary conditions, race conditions, and recovery paths for a feature - the systematic catalog of what can go wrong and the failure modes to design for. Use during specification to map the failure surface and ensure comprehensive coverage, or during QA planning to identify boundary and limit scenarios to test. Distinct from deliver-acceptance-criteria, which writes story-level Given/When/Then checks; this skill produces the whole-feature edge-case catalog..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
How to install
mdr add product-on-purpose/pm-skills/deliver-edge-cases@v2.1.1mdr add product-on-purpose/pm-skills/deliver-edge-cases@sha256:36d1f89195972d49Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_v54rfd46vwflg4m7)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v2.1.1 latest | 2026-06-13 | 01716da | 4,342 B | A | view · diff |
| v2.1.0 | 2026-06-10 | bf23914 | 4,048 B | A | view · diff |
| v2.0.1 | 2026-06-10 | b8ccff6 | 3,368 B | A | view · diff |
| v2.0.0 | 2026-05-20 | be1352b | 3,192 B | A | view · diff |
| v2.0.0 | 2026-04-23 | 8ab0f81 | 3,186 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 (4342 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
product-on-purpose/pm-skills · 644 stars · license Apache-2.0 · pushed 2026-09-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_v54rfd46vwflg4m7 GET https://markdownregistry.com/api/v1/resolve?ref=product-on-purpose/pm-skills/deliver-edge-cases GET https://markdownregistry.com/api/v1/blob/36d1f89195972d49e334581c9080f7352f66f451a2507fe7b391c1c4b251962f