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datachain

Python library that turns files in S3, GCS and Azure into versioned, typed datasets for pipelines and agents.

Harness by datachain-ai

IndexedApache-2.0★ 2,829
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Install

From the package registry. Read the repository before you give any tool access to your data.

pip install datachain

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About

DataChain indexes files in S3, GCS, Azure and local storage into versioned datasets with Pydantic schemas, and runs filters, joins, group-bys and vector search over the resulting rows. Each saved step is registered as a named, versioned dataset that later pipelines can reuse instead of recomputing. An optional agent skill installs into Claude Code, Cursor, Codex, GitHub Copilot and Pi and generates markdown summaries of datasets in a Knowledge Base. The README says file bytes stay in the user's storage.

Use cases: data-pipelines, data-analysis

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Fact sheet

Languages
PythonREADME
Packages
datachain (pypi)README
MCP support
Via adapterREADME
Memory
long-term, vectorREADME
Maturity
Betagithub.com

Facts extracted by Claude Haiku 5.5 from the linked sources on Oct 24, 2026. Wrong fact? Tell us.

Alternatives

Frameworks for the same language with a similar way of orchestrating agents.

Signals

Stars
2,829
Forks
175
Open issues
93
Weekly downloads
4,504
Last commit
Oct 23, 2026 (7 days ago)
Last release
Oct 21, 2026 (9 days ago)
Last package publish
Oct 21, 2026 (9 days ago)

From GitHub (fetched Oct 24, 2026) and the package registry.

Details

Packages
pypi datachain
License
Apache-2.0
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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Cite this page

datachain. Agent Mart. https://agentmart.dev/harnesses/datachain (last updated 2026-10-24)