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Migrating LangChain and LangGraph to Pydantic AI v1.0.0

Use this resource to migrate LangChain or LangGraph applications to Pydantic AI

New

  • 321 downloads
  • 108 likes
  • 152 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install langchain-agents-to-pydantic-ai

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 works from the running application, maps semantic differences (persistence, interrupts, streaming, subagents) and migrates the smallest complete slice. It adds Harness for advanced features when needed. You get a verified migration with documented gaps.

Mostly picked by

Updated November 2, 2026

Card for the “Migrating LangChain and LangGraph to Pydantic AI” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: application analysis, semantic differences and level of rigour
  • references/: concept mapping, workaround recipes and verification

Good fit for

  • Your application uses LCEL chains or LangGraph graphs
  • You want to replace LangChain with Pydantic AI without changing visible behaviour

Not for

    Tags

    • migration
    • langchain
    • langgraph
    • pydantic ai
    • agents

    About

    You say

    “Migrate my LangGraph order-validation graph to Pydantic AI, with interrupts preserved.”

    Card for the “Migrating LangChain and LangGraph to Pydantic AI” skill

    Skill published by pydantic under the MIT 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 migrate LangChain or LangGraph applications to Pydantic AI
    3. Review and adjust the result

    Content preview

    Files

    • agents/openai.yaml0.4 KB
    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • references/CONCEPT-MAPPING.md16.4 KB
    • references/DEEP-AGENTS-MAPPING.md24.6 KB
    • references/LOGFIRE-VERIFICATION.md10.3 KB
    • references/SEMANTIC-GAPS.md21.9 KB
    • references/VERIFICATION-AND-CUTOVER.md12.5 KB
    • references/WORKAROUND-RECIPES.md18.2 KB
    • SKILL.md9.9 KB

    Origin and licence

    Listed unmodified

    Author
    pydantic
    Source
    github.com/pydantic/skills/tree/98f591c0886eb11df0bdd57804419e11439efc93/skills/migrating-langchain-to-pydantic-ai
    Licence
    MIT

    Notice

    « migrating-langchain-to-pydantic-ai » (pydantic, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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