developing-features-tdd skillA
developing-features-tdd is agent-read markdown (skill) from cristhianzl/claude-skills-czl: Build a Langflow feature with strict TDD — UNDERSTAND → DESIGN → RED → VERIFY RED → GREEN → VERIFY GREEN → REFACTOR → VALIDATE → REPEAT — applying Langflow's prefer-real-integrations-over-mocks policy, ComponentTestBase fixtures, and the graph test pattern from AGENTS.md. Use when building a new feature with TDD, when the user says "TDD this", "tests first", "red green refactor", or asks for feature work in Langflow that needs to be verifiable from the spec. For bug fixes use fixing-bugs; for no.
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 cristhianzl/claude-skills-czl/developing-features-tdd@git:20260813.0b7d6d3mdr add cristhianzl/claude-skills-czl/developing-features-tdd@sha256:fec33a50fcf88afbPin 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_ghhz2a6vopaej5b3)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260813.0b7d6d3 latest | 2026-08-13 | 0b7d6d3 | 17,805 B | A | view · diff |
| git:20260623.1e7c345 | 2026-06-23 | 1e7c345 | 17,702 B | A | view · diff |
| git:20260619.c43368b | 2026-06-19 | c43368b | 16,266 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 (17805 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
cristhianzl/claude-skills-czl · 5 stars · license MIT · pushed 2026-09-15 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ghhz2a6vopaej5b3 GET https://markdownregistry.com/api/v1/resolve?ref=cristhianzl/claude-skills-czl/developing-features-tdd GET https://markdownregistry.com/api/v1/blob/fec33a50fcf88afbfcf450e9601edd0a38c951e2f9fd782932d33d23b6a92bf1
Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.