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Testing PydanticAI agents without API calls v1.0.0

Use this resource to test PydanticAI agents deterministically, without API calls

New

  • 514 downloads
  • 106 likes
  • 176 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install pydantic-ai-agent-tests

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent swaps the model for TestModel to get deterministic results, and moves to FunctionModel when custom logic or simulated tool calls are needed. It adds VCR cassettes to record and replay real interactions. You get fast, reproducible unit tests for agents.

Mostly picked by

Updated November 2, 2026

Card for the “Testing PydanticAI agents without API calls” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
Apache-2.0

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What you get

  • SKILL.md: TestModel, FunctionModel and simulated tool calls
  • SKILL.md: VCR cassettes to record and replay API calls

Good fit for

  • You write unit tests for a PydanticAI agent without calling an API
  • You want to record API calls and replay them

Not for

    Tags

    • pydantic-ai
    • tests
    • testmodel
    • vcr

    About

    You say

    “Write a test for my ticket-triage agent with TestModel.”

    Card for the “Testing PydanticAI agents without API calls” skill

    Skill published by existential-birds under the Apache-2.0 license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to test PydanticAI agents deterministically, without API calls
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE10.7 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md7.3 KB

    Origin and licence

    Listed unmodified

    Author
    existential-birds
    Source
    github.com/existential-birds/beagle/tree/d1a74899fbfec74974d1818e4cac7c3d54d44b65/plugins/beagle-ai/skills/pydantic-ai-testing
    Licence
    Apache-2.0

    Notice

    « pydantic-ai-testing » (existential-birds, Apache-2.0) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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