CLAUDE.mdA

CLAUDE.md from fuenfgeld/pydantic-ai-skills is a CLAUDE.md file: the standing instructions Claude Code reads in that repo.

Install it, pinned
mdr add fuenfgeld/pydantic-ai-skills/CLAUDE.md@git:20260120.9fcbca9

Pins git:20260120.9fcbca9 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 14 of 14 checks passed
Kind
CLAUDE.md file
Repository
fuenfgeld/pydantic-ai-skills
Path
CLAUDE.md
Versions recorded
1
Latest version
git:20260120.9fcbca9, committed Jan 20, 2026
Size
3,733 bytes
Repository stars
10
License
MIT

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

# Core Principles

- **TDD (Test-Driven Development)**: Write tests before implementation
- **KISS (Keep It Simple, Stupid)**: Start simple, add complexity incrementally
- **SOLID Principles**: Maintain clean, maintainable architecture
- **Evaluation-Driven Development**: Treat evaluations as first-class code

## Development Workflow

```
Plan → Document → Test → Implement → Evaluate → Refine
```

### Phase 1: Plan
- Review requirements for the feature/agent
- Design high-level architecture
- Identify evaluation strategies
- **Create implementation plan document in `.claude/plan/` folder in the project folder**
- **Plan must be updated regularly throughout implementation**

### Phase 2: Document
- Write detailed specifications
- Define input/output contracts
- Document expected behavior
- Create architecture decision records

### Phase 3: Test (Write First!)
- Create Pydantic Evals dataset with test cases
- Implement custom evaluators if needed
- Write traditional unit tests for utilities
- Define success criteria

### Phase 4: Implement
- Build Pydantic models
- Implement agent with proper patterns
- Add Logfire instrumentation
- Follow SOLID principles

### Phase 5: Evaluate
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add fuenfgeld/pydantic-ai-skills/CLAUDE.md@sha256:ebeca397e49bd0b5

The line at the top of this page pins the label git:20260120.9fcbca9, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_cf2yljzvbunvuto2.svg)](https://markdownregistry.com/a/art_cf2yljzvbunvuto2)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Jan 20, 2026.

versioncommittedcommitsizeaudit
git:20260120.9fcbca9 latest2026-01-20 9fcbca9 3,733 BA view

Audit of the latest version

A  14 of 14 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Size between 200 bytes and 200 KB (3733 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

GitHub

fuenfgeld/pydantic-ai-skills · 10 stars · license MIT · pushed 2026-10-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_cf2yljzvbunvuto2
GET https://markdownregistry.com/api/v1/resolve?ref=fuenfgeld/pydantic-ai-skills/CLAUDE.md
GET https://markdownregistry.com/api/v1/blob/ebeca397e49bd0b51a62abd34824f113b0f790f70d557c8d705ef6d84f1b99c7

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: what a CLAUDE.md file is · keeping AGENTS.md and CLAUDE.md in sync · which agent file does what.

More from fuenfgeld/pydantic-ai-skills

pydantic-ai-agents SKILL.md skill
fuenfgeld/pydantic-ai-skills · skills/pydantic-ai-agents/SKILL.md · Build and debug Pydantic AI v2 agents using best practices for dependencies, instructions, tools, capabilities, hooks…
git:20261017.d039a72 · audit A · 10 stars
pydantic-evals SKILL.md skill
fuenfgeld/pydantic-ai-skills · skills/pydantic-evals/SKILL.md · Test and evaluate AI agents and LLM outputs using code-first evaluation framework with strong typing. Use when the user…
git:20260707.0a11b6b · audit A · 10 stars

Every file in fuenfgeld/pydantic-ai-skills

Other files named CLAUDE.md

CLAUDE.md CLAUDE.md file
affaan-m/ecc · CLAUDE.md
git:20261020.9471ef4 · audit A · 299,696 stars
CLAUDE.md CLAUDE.md file
firecrawl/firecrawl · CLAUDE.md
git:20261008.5a75dca · audit A · 199,595 stars
CLAUDE.md CLAUDE.md file
garrytan/gstack · CLAUDE.md
git:20261107.ef99eb5 · audit A · 140,694 stars
CLAUDE.md CLAUDE.md file
juliusbrussee/caveman · CLAUDE.md
git:20261106.af560e1 · audit B · 118,366 stars
CLAUDE.md CLAUDE.md file
addyosmani/agent-skills · CLAUDE.md
git:20260720.8fd2081 · audit A · 113,383 stars
CLAUDE.md CLAUDE.md file
nexu-io/open-design · CLAUDE.md
git:20260430.9b57c22 · audit B · 106,541 stars
CLAUDE.md CLAUDE.md file
pbakaus/impeccable · CLAUDE.md
git:20261105.71dfd50 · audit A · 106,186 stars
CLAUDE.md CLAUDE.md file
debpalash/voicestudio · CLAUDE.md
git:20261104.c2998f6 · audit A · 102,675 stars

Browse by kind, by grade A, or by owner.