v3.0.0: Reintegration · PrefectHQ marvin · Discussion #1070 · GitHub

zzstoatzz
Feb 27, 2025
Maintainer

Marvin 3.0 represents a significant merger of two libraries: marvin and controlflow - re-platformed on pydantic-ai. This combined framework brings together Marvin's user-friendly structured output tools with ControlFlow's powerful agentic engine to create a simple but powerful way to get things done with AI.

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this release contains breaking changes
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What's Changed

New Features 🎉

Ensure agents plural arg by @jlowin in Ensure agents plural arg #1005
Bump pydantic-ai to 0.0.18 by @jlowin in Bump pydantic-ai to 0.0.18 #1006
Add usage methods by @jlowin in Add usage methods #1009
update banner by @zzstoatzz in update banner #1008
Support in-memory databases by @jlowin in Support in-memory databases #1012
Add context kwarg for major fns by @jlowin in Add context kwarg for major fns #1014
Handle non-serializable elements of RetryPromptParts by @jlowin in Handle non-serializable elements of RetryPromptParts #1015
marvin.generate: Enforce n in typing by @jlowin in marvin.generate: Enforce n in typing #1016
Add JSONSchema parser by @jlowin in Add JSONSchema parser #1017
actually ignore extra by @zzstoatzz in actually ignore extra #1018
Update ai-labeler.yml by @jlowin in Update ai-labeler.yml #1019
Add marvin.summarize by @jlowin in Add marvin.summarize #1021
Improve how instructions are provided to high-level fns by @jlowin in Improve how instructions are provided to high-level fns #1022
Add function for generating schemas by @jlowin in Add function for generating schemas #1024
Add autouse memory by @jlowin in Add autouse memory #1027
typing progress by @zzstoatzz in typing progress #1020
update readme by @zzstoatzz in update readme #1031
update examples by @zzstoatzz in update examples #1032
smol by @zzstoatzz in smol #1033
resolve merge conflict on 3 by @jlowin in resolve merge conflict on 3 #1041
totally normal 🪿 server example by @zzstoatzz in totally normal 🪿 server example #1042
Add planning by @jlowin in Add planning #1046
Update README.md by @jlowin in Update README.md #1048
tweaks by @zzstoatzz in tweaks #1050
Clean up by @jlowin in Clean up #1054
more examples by @zzstoatzz in more examples #1056
Ensure annotated is properly... annotated by @jlowin in Ensure annotated is properly... annotated #1057
Add support for postgres as backing db by @jlowin in Add support for postgres as backing db #1058
Add support for base schema in schema generation by @jlowin in Add support for base schema in schema generation #1059
Improve schema generation by @jlowin in Improve schema generation #1060
Update session generation by @jlowin in Update session generation #1061

Breaking Changes 🛫

Move database.py by @jlowin in Move database.py #1007
Update readme by @jlowin in Update readme #1013
Memories are async classes by @jlowin in Memories are async classes #1026
Refactor agents/teams/end-turn functions by @jlowin in Refactor agents/teams/end-turn functions #1036
Readme for 3.0 by @jlowin in Readme for 3.0 #1039
Merge Marvin 3 to main by @jlowin in Merge Marvin 3 to main #1040
Update README.md by @jlowin in Update README.md #1044
Update for pydantic 0.26 by @jlowin in Update for pydantic 0.26 #1062

Docs 📚

readme tweaks by @zzstoatzz in readme tweaks #1028
add Marvin docs by @jlowin in add Marvin docs #1030

Other Changes 🦾

add controlflow tool by @zzstoatzz in add controlflow tool #991
xai example by @zzstoatzz in xai example #994
Introducing Marvin Guru on Gurubase.io by @kursataktas in Introducing Marvin Guru on Gurubase.io #992
redirect twitter by @zzstoatzz in redirect twitter #995
added check for new user join to chat_endpoint by @biancaines in added check for new user join to chat_endpoint #993
Fix bot by @zzstoatzz in Fix bot #996
Improve Clarity and Consistency in README by @Anik2812 in Improve Clarity and Consistency in README #990
utcnow is deprecated by @zzstoatzz in utcnow is deprecated #999
Bump turbopuffer from 0.1.15 to 0.1.23 by @dependabot in Bump turbopuffer from 0.1.15 to 0.1.23 #998
doc(README): remove typo by @Chaitanya110703 in doc(README): remove typo #988
migrate slackbot to pydantic-ai by @zzstoatzz in migrate slackbot to pydantic-ai #1002
add missing import in example by @zzstoatzz in add missing import in example #1003
Update database validation by @jlowin in Update database validation #1011
Summarize tests by @jlowin in Summarize tests #1023
AgentDeps -> AgentDepsT by @zzstoatzz in AgentDeps -> AgentDepsT #1034
deepseek example and typing by @zzstoatzz in deepseek example and typing #1029
Delegates by @jlowin in Delegates #1037
Unit test instruction by @jlowin in Unit test instruction #1038
fix typo in README example by @davidgasquez in fix typo in README example #1043
fix typing for embedding_fn in postgres provider by @webcoderz in fix typing for embedding_fn in postgres provider #1047
add release CI by @zzstoatzz in add release CI #1064
Create publish-pypi.yml by @jlowin in Create publish-pypi.yml #1066
Delete publish-pypi.yml by @jlowin in Delete publish-pypi.yml #1067

New Contributors

@kursataktas made their first contribution in Introducing Marvin Guru on Gurubase.io #992
@biancaines made their first contribution in added check for new user join to chat_endpoint #993
@Anik2812 made their first contribution in Improve Clarity and Consistency in README #990
@Chaitanya110703 made their first contribution in doc(README): remove typo #988
@davidgasquez made their first contribution in fix typo in README example #1043
@webcoderz made their first contribution in fix typing for embedding_fn in postgres provider #1047

Full Changelog: v2.3.8...v3.0.0

yes the release name is a Severance reference

This discussion was created from the release v3.0.0: Reintegration.

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