Main Sequence Python SDK
The Main Sequence Python SDK is the client and development toolkit for the Main Sequence platform.
The Main Sequence platform allows you to:
- rapidly build and deploy data products with normalized
MetaTablecontracts andTimeIndexTableUpdaterproducer workflows - deploy FastAPI services and supported application surfaces on the platform
- rapidly deploy agents using the Google Agent SDK
The key idea is that you can focus on development and deployment, while the platform handles the DevOps layer.
Repository Status
- Status: actively maintained
- Last commit:
2026-03-27-6aa5dea-docs logo fix v.3.17.6 - Open issues: GitHub Issues
- Documentation: Documentation Site
- Security policy: SECURITY.md
- Release history: CHANGELOG.md
- Major-version migrations: Migration guides
What this repository contains
This repository contains the SDK and documentation used to build and operate Main Sequence CodeRepositories.
Main package areas:
mainsequence.meta_tables:MetaTables,TimeIndexTableUpdaters, update workflows, and persistencemainsequence.client: API client models for CodeRepositories, jobs, time-index tables, sharing, and platform resourcesmainsequence.cli: themainsequencecommand-line interface
Repository areas:
docs/: knowledge guides, CLI docs, and generated reference docstests/: automated tests
Documentation map
The documentation is organized into three reading modes:
- Knowledge: deeper conceptual guides
- CLI: command-focused operational documentation
- Reference: generated API reference
Recommended entry points:
- Beginner tutorial:
- Knowledge:
- Migrations:
- CLI:
Quick start
Install the package:
pip install mainsequence
Authenticate:
mainsequence login
An already MCP-authenticated coding agent can establish the same persisted CLI
session with mainsequence login --mcp, then call the printed
auth.cli_authorize tool while the command waits. The backend supplies the
callback URI; tokens return directly to the CLI and are never exposed through
MCP.
Check that you can see your CodeRepositories:
mainsequence code-repository list
Create a new CodeRepository:
mainsequence code-repository create my-first-repository
Set it up locally:
mainsequence code-repository set-up-locally <CODE_REPOSITORY_UID>
cd my-first-repository
mainsequence code-repository build-local-venv --path .
From there, the normal learning path is:
- model your first canonical table with a backend-managed
MetaTable - create your first
TimeIndexTableUpdateras an opinionated MetaTable-backed update workflow - understand sharing and RBAC for published tables
- add an API or another application surface
- schedule jobs
- build supported application surfaces or downstream consumers
- package the CodeRepository as an agent-facing surface when it is ready
Installation for development
This repository uses pyproject.toml and a development dependency group.
With uv:
uv sync --group dev
Or with pip, install the package and the docs/test tools you need separately.
Common development commands
Run the CLI:
mainsequence --help
Run tests:
pytest
Serve the docs locally:
mkdocs serve
Build the docs:
mkdocs build
Lint the code:
ruff check .
Format the code:
black .
How to read this repository
If you are evaluating the platform:
- start with the separate canonical tutorial CodeRepository linked above
If you are building a feature and already know the area:
- go straight to the relevant guide in
docs/knowledge/
If you are operating CodeRepositories day to day:
- use
docs/cli/and themainsequence --helpcommand tree
If you need the exact SDK surface:
- use
docs/reference/
Package metadata
- Package name:
mainsequence - Python:
>=3.13 - CLI entry point:
mainsequence
Package metadata is defined in pyproject.toml.
License
This repository is distributed under the terms described in LICENSE.
1 maintainer
Release files for mainsequence 8.1.6
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
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| mainsequence-8.1.6.tar.gz | 538.7 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| mainsequence-8.1.6-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 950.2 kB
Release files / mainsequence-8.1.6.tar.gz
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| Size | 538.7 kB |
| Tags | Source |
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Transparency logRelease files / mainsequence-8.1.6-py3-none-any.whl
| Download URL | mainsequence-8.1.6-py3-none-any.whl |
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| Tags | Python 3 |
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SHA-256 checksum How to use checksums |
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Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
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|
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