pydanticai SKILL.md skillA

pydanticai from magnus919/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add magnus919/agent-skills/pydanticai@v1.0.4

Pins v1.0.4 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
magnus919/agent-skills
Path
pydanticai/SKILL.md
Versions recorded
8
Latest version
v1.0.4, committed Oct 9, 2026
First version recorded
Jul 9, 2026
Size
17,202 bytes
Repository stars
166
License
MIT

Build type-safe AI agents and graph-based workflows with PydanticAI and PydanticGraph. Agent creation, function tools, capabilities, dependency injection, structured output, streaming, multi-agent patterns, testing, evals, and graph state machines. Use whenever you are building agents, tool-using LLM workflows, or graph-based state machines in Python. Do not use this skill for unrelated requests; route to the nearest named specialist.

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

# PydanticAI & PydanticGraph Expert Skill

PydanticAI is a Python agent framework for building production-grade GenAI applications, built by the team behind Pydantic. PydanticGraph is its companion graph/state-machine library.

**Install:**
```bash
pip install pydantic-ai               # Full install (all providers)
pip install "pydantic-ai-slim[openai]" # Minimal install + your provider
```

## Quick Reference

```python
from pydantic_ai import Agent

# Basic agent — one line
agent = Agent('openai:gpt-5.2', instructions='Be concise.')

# Run it
result = agent.run_sync('What is the capital of France?')
print(result.output)
```

## When to Load Which Reference

| Topic | Load When | File |
|---|---|---|
| **Agent creation & lifecycle** | You need to create, configure, or run an agent — define tools, deps, output types, run methods, streaming | `references/core-agents.md` |
| **Capabilities & hooks** | You need built-in capabilities (Thinking, WebSearch, MCP, etc.), on-demand loading, lifecycle hooks, or custom capabilities | `references/capabilities-hooks.md` |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add magnus919/agent-skills/pydanticai@sha256:c19a77e99c95af14

The line at the top of this page pins the label v1.0.4, 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_fwrdthm7jfiaaxop.svg)](https://markdownregistry.com/a/art_fwrdthm7jfiaaxop)

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

Versions

The registry has recorded 8 versions of this file, between Jul 9, 2026 and Oct 9, 2026, about one every 13 days.

versioncommittedcommitsizeaudit
v1.0.4 latest2026-10-09 0138b46 17,202 BA view · diff
v1.0.42026-10-09 b45615b 16,833 BA view · diff
v1.0.42026-10-06 96fbe07 16,126 BA view · diff
v1.0.42026-09-02 035e58d 15,762 BA view · diff
v1.0.42026-07-09 f3ebded 15,675 BA view · diff
v1.0.32026-07-09 9ff931d 11,835 BA view · diff
v1.0.12026-07-09 3cfdcf8 8,783 BA view · diff
v1.0.02026-07-09 e4a1188 6,724 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (17202 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

magnus919/agent-skills · 166 stars · license MIT · pushed 2026-11-04 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_fwrdthm7jfiaaxop
GET https://markdownregistry.com/api/v1/resolve?ref=magnus919/agent-skills/pydanticai
GET https://markdownregistry.com/api/v1/blob/c19a77e99c95af1445a5a5b055d65caa09b5cd8b27ed07b2868ffc601cb68fb1

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.

More from magnus919/agent-skills

AGENTS.md AGENTS.md file
magnus919/agent-skills · AGENTS.md
git:20261010.bfe1eb1 · audit A · 166 stars
actuarial-risk-modeling SKILL.md skill
magnus919/agent-skills · actuarial-risk-modeling/SKILL.md · Use when analyzing, selecting, validating, or communicating models for insurance, actuarial, financial-risk, or other…
git:20260823.077c5d0 · audit A · 166 stars
adr-authoring SKILL.md skill
magnus919/agent-skills · adr-authoring/SKILL.md · Write, review, and maintain architecture decision records with clear context, alternatives, consequences, confirmation…
git:20260906.d8f3554 · audit A · 166 stars
agent-council SKILL.md skill
magnus919/agent-skills · agent-council/SKILL.md · Run a structured multi-agent debate by spawning a panel of expert agents on any question, with convergence-aware…
git:20260823.6efee5c · audit A · 166 stars
agent-evals-and-observability SKILL.md skill
magnus919/agent-skills · agent-evals-and-observability/SKILL.md · Design, run, review, or release framework- and vendor-neutral evaluations and observability for AI agents. Use when…
git:20261103.c336267 · audit A · 166 stars
AGENTS.md@agent-production-operations AGENTS.md file
magnus919/agent-skills · agent-production-operations/AGENTS.md
git:20260814.c0c7690 · audit A · 166 stars
agent-production-operations SKILL.md skill
magnus919/agent-skills · agent-production-operations/SKILL.md · Operate an evaluated agent with tools and authority in production through a runtime control plane covering versioning…
git:20261103.c336267 · audit A · 166 stars
agent-skills SKILL.md skill
magnus919/agent-skills · agent-skills/SKILL.md · Use this skill when creating, reviewing, or editing Agent Skills-format skills, or when implementing skill discovery…
git:20261102.915225c · audit B · 166 stars
ai-governance SKILL.md skill
magnus919/agent-skills · ai-governance/SKILL.md · Design and operate AI governance: principles, decision rights, risk tiers, lifecycle gates, fairness, transparency…
git:20261101.83d2784 · audit A · 166 stars
ai-operating-economics SKILL.md skill
magnus919/agent-skills · ai-operating-economics/SKILL.md · Use when deciding whether an AI-enabled workflow should be adopted, scaled, constrained, redesigned, or retired, and…
git:20260821.1291f95 · audit A · 166 stars
amazon-memo SKILL.md skill
magnus919/agent-skills · amazon-memo/SKILL.md · Create, adapt, or revise Amazon-style narrative decision memos, six-pagers, PR/FAQs, and short decision briefs…
git:20261019.89945ee · audit A · 166 stars
analog-occultism SKILL.md skill
magnus919/agent-skills · analog-occultism/SKILL.md · Use this skill to create subject-neutral images and videos in an analog occultism / industrial CRT noir aesthetic…
git:20260905.3d54d7b · audit A · 166 stars

Every file in magnus919/agent-skills

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