How long does the integration take?

Change one base URL in an OpenAI-compatible client, or install the Python or TypeScript SDK; the quickstart routes a first request in a few minutes.

Will this lock us into another vendor?

No. The router is Apache-2.0 open source, your provider keys stay yours, and the API is OpenAI-compatible, so leaving is a change of base URL.

What happens when a provider fails?

The router falls back to the next model your policy allows and records the fallback in the trace, so an outage costs a retry, not an incident.

ast_serialize - Skill - OpenSmartRoute

Name: ast_serialize
Author: mypyc

Imported from mypyc/ast_serialize (AGENTS.md). Install upstream with npx skills add mypyc/ast_serialize. Copyright stays with the author.

Overview

This repository contains a Python Rust extension that serializes a Ruff AST into binary data. Mypy uses this extension to parse Python code and deserialize the produced AST.

This depends on Ruff crates as external git dependencies.

Code structure

Serialization is implemented in ~/src/ast_serialize/src/serialize_ast.rs (and other files in src/)
Deserialization is implemented in ~/src/mypy/mypy/nativeparse.py
Mypy AST is defined in ~/src/mypy/mypy/nodes.py (type annotation AST nodes in ~/src/mypy/mypy/types.py)

Ruff sources

This project depends on Ruff crates as git dependencies (see Cargo.toml). The sources are:

Git dependency: Defined in Cargo.toml, pinned to a specific Ruff tag/commit
Cached location: After first build, sources are cached in ~/.cargo/git/checkouts/ruff-*/
Upstream repo: https://github.com/astral-sh/ruff

To browse Ruff sources:

# Find the cached checkout
ls ~/.cargo/git/checkouts/ruff-*/

# Or clone separately
git clone https://github.com/astral-sh/ruff ~/src/ruff

Key Ruff crates used:

ruff_python_parser - Python parser
ruff_python_ast - Python AST definitions
ruff_source_file - Source file handling (LineIndex)
ruff_text_size - Text position types (TextRange, Ranged)

Testing and development

Run maturin develop in ~/src/ast_serialize before running Python tests if Rust code has been modified
Add end-to-end tests to ~/src/mypy/test-data/unit/native-parser.test. Look at parse.test in the same directory for the correct output format and how different AST nodes are output
If pytest is not installed, enable virtualenv in ~/venv/mypy to run tests
Pass argument mypy/test/test_nativeparse.py::NativeParserSuite to pytest to run the relevant native parser tests
Run Rust unit tests with: cargo test

Updating Ruff dependency

To update to a newer Ruff version, edit Cargo.toml and change the tag or rev parameter for all ruff_* dependencies, then rebuild.

Install ast_serialize and it becomes one more candidate the router can pick - when it fits.

A listing is a routing target with a manifest: what it does, which domains it covers, what it costs and who publishes it. Once installed it sits beside your own models and tools, is scored like any other candidate for each request, and shows up in the trace when it wins. Ratings come from workspaces that installed it, one per account.

{ "ocm": "1", "id": "mypyc-ast-serialize-ast-serialize", "kind": "skill", "name": "ast_serialize", "description": "This repository contains a Python Rust extension that serializes a Ruff AST into binary data. Mypy uses this extension to parse Python code and deserialize the produced AST.", "publisher": "mypyc", "version": "1.0.0", "capabilities": { "domains": [ "coding" ], "tags": [ "skill-md", "github-agents" ], "languages": [ "en" ] }, "quality_prior": 0.6, "examples": [ "This repository contains a Python Rust extension that serializes a Ruff AST into binary data. Mypy uses this extension to parse Python code and deserialize the produced AST." ], "primary": false, "metadata": { "source": { "provider": "github-agents", "repository": "https://github.com/mypyc/ast_serialize", "path": "AGENTS.md", "ref": "e83de7d4a57092e436c4651d25619643e612e88a", "url": "https://github.com/mypyc/ast_serialize/blob/e83de7d4a57092e436c4651d25619643e612e88a/AGENTS.md", "key": "mypyc/ast_serialize/AGENTS.md" } }, "instructions": "# Overview\n\nThis repository contains a Python Rust extension that serializes a Ruff AST into binary data.\nMypy uses this extension to parse Python code and deserialize the produced AST.\n\nThis depends on Ruff crates as external git dependencies.\n\n# Code structure\n\n- Serialization is implemented in ~/src/ast_serialize/src/serialize_ast.rs (and other files in src/)\n- Deserialization is implemented in ~/src/mypy/mypy/nativeparse.py\n- Mypy AST is defined in ~/src/mypy/mypy/nodes.py (type annotation AST nodes in ~/src/mypy/mypy/types.py)\n\n## Ruff sources\n\nThis project depends on Ruff crates as git d", "cost": { "context_tokens": 498 } }

ast_serialize

About

Overview

Code structure

Ruff sources

Testing and development

Updating Ruff dependency

Install ast_serialize and it becomes one more candidate the router can pick - when it fits.

What it costs to adopt - in engineering time.

One base URL

No vendor lock-in

Failover built in

Use it

Manifest

Reviews