test-driven-development SKILL.md skillA
test-driven-development from a5c-ai/babysitter is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add a5c-ai/babysitter/test-driven-development@git:20260601.da7723aPins git:20260601.da7723a in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- a5c-ai/babysitter
- Path
library/methodologies/rpikit/skills/test-driven-development/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260601.da7723a, committed Jun 1, 2026
- First version recorded
- Mar 25, 2026
- Size
- 1,452 bytes
- Repository stars
- 1,891
- License
- MIT
Test-first development practice where test specifications are written before production code, integrated into plan tasks as mandatory first sub-steps.
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
- During implementation (write tests before code) - When verifying step completion ## Process 1. **Specify tests first** - Define inputs, expected outputs, edge cases 2. **Write test code** - Create automated tests matching specification 3. **Implement production code** - Write code that passes the tests 4. **Verify** - Run tests and confirm all pass ## Test Categories - **Unit tests**: Isolated function/method testing - **Integration tests**: Cross-component interaction testing - **Manual verification**: Human-performed checks when automation is impractical ## Key Rules - Never combine test writing and implementation into a single step - Every task with code changes must have associated tests - Tests must be runnable and produce clear pass/fail results - Edge cases must be explicitly considered ## Tool Use Integrated into `methodologies/rpikit/rpikit-plan` and `methodologies/rpikit/rpikit-implement`
Read the whole file at its exact version.
How to install
mdr add a5c-ai/babysitter/test-driven-development@sha256:e47c766b6c79bdd9The line at the top of this page pins the label git:20260601.da7723a, 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_ocezdw7doxgptibc)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Mar 25, 2026 and Jun 1, 2026, about one every 17 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260601.da7723a latest | 2026-06-01 | da7723a | 1,452 B | A | view · diff |
| git:20260507.9f5be95 | 2026-05-07 | 9f5be95 | 1,482 B | A | view · diff |
| git:20260507.8dfdcb4 | 2026-05-07 | 8dfdcb4 | 1,477 B | C | view · diff |
| git:20260507.56f011d | 2026-05-07 | 56f011d | 1,540 B | A | view · diff |
| git:20260325.a6b3a88 | 2026-03-25 | a6b3a88 | 1,447 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 (1452 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
a5c-ai/babysitter · 1,891 stars · license MIT · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ocezdw7doxgptibc GET https://markdownregistry.com/api/v1/resolve?ref=a5c-ai/babysitter/test-driven-development GET https://markdownregistry.com/api/v1/blob/e47c766b6c79bdd9cffe2c430144a5849bcf9535341913ea5c8c61aff83fb46a
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.
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