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rio

Rio is a fully autonomous, one-shot coding agent. It has no interactive terminal UI, no conversation history, no human steer in the middle and no follow-up turns. Start a task, let it run, and Rio exits only when the task completes or aborts.

Use

Install via uv:

uv tool install rio

Run a adhoc task:

rio run "Fix gh issue 123."

Run a predefined workflow:

rio run task.md

The workflow is to write the task in a Markdown file, then run Rio against it.

You can add a short instruction when invoking it:

uv run rio run "Follow feature.md, run the tests, and finish the implementation"

Use rio login PROVIDER to configure a provider. Use --provider NAME --model MODEL to choose one and --approve to allow project instructions and extensions for that run. Rio prints a compact human transcript by default. Use --output json for one JSON event per line. Each human-mode run prints a session id; continue it with rio run --resume SESSION_ID "Next task".

Documentation

See the documentation for tutorials, guides, command-line reference, and an explanation of Rio's architecture.

Development

uv run pytest
uv run ruff check .

To run the Lean 4 verification, install elan and build the pinned toolchain from the repository root:

cd tests/lean && lake build

See the Lean behavior models for their scope and limits.

  • rio.ai is a multi-provider LLM streaming SDK.
  • rio.agent is the SKILL.state runtime.
  • rio.coding supplies the autonomous coding skill and tools.
  • rio.cli is the public one-shot command-line entry point.

Release files for rio 0.6.0

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for rio 0.6.0
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rio-0.6.0.tar.gz 470.3 kB Details

Built distribution (wheel)

Table of built distributions (wheels) for rio 0.6.0
File Interpreter ABI Platform
rio-0.6.0-py3-none-any.whl Python 3 none any Details

Total release size: 864.6 kB

Release files / rio-0.6.0.tar.gz

Download URL rio-0.6.0.tar.gz
Size 470.3 kB
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Release files / rio-0.6.0-py3-none-any.whl

Download URL rio-0.6.0-py3-none-any.whl
Size 394.3 kB
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Uploaded via twine/7.0.0 CPython/3.13.14

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PyPI verified that this artifact, at this checksum, originated from the publisher listed below.

Signed by GitHub Actions, verified by PyPI on Sep 26, 2026.

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Release history Release notifications | RSS feed

0.6.2

2 release files

0.6.1

2 release files

This release

0.6.0 This release

2 release files

0.5.0

2 release files

0.4.5

2 release files

0.4.4

2 release files

0.4.3

2 release files

0.4.2

2 release files

0.4.1

2 release files

0.4.0

2 release files

0.3.2

2 release files

0.3.1

2 release files

0.3.0

2 release files

0.2.9

2 release files

0.2.4

2 release files

0.2.3

2 release files

0.2.2

2 release files

0.2.1

2 release files

0.2.0

0.1.0

2 release files

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