yuutools
Explicit, async-first tool framework for LLM agents.
Install
uv add yuutools
Usage
import yuutools as yt
def get_z(ctx) -> int:
return ctx.multiplier
@yt.tool(
params={"x": "first operand", "y": "list of ints to sum"},
name="goodtool",
description="Add x + sum(y) + z",
)
async def goodtool(x: int, y: list[int], z: int = yt.depends(get_z)):
return x + sum(y) + z
# Registry
manager = yt.ToolManager([goodtool])
tool = manager["goodtool"]
print(tool.spec.to("json_schema"))
# Bind context and run
result = await tool.bind(ctx).run(x=1, y=[2, 3])
@yt.tool
Decorator that turns a function into a Tool. Parameters:
params—{name: description}mapping for the LLM schemaname— override tool name (default:__name__)description— tool description (default: first docstring line)
yt.depends(resolver)
Marks a parameter as context-injected. The resolver is called with the bound context at execution time. Hidden from the generated spec.
ToolSpec.to(fmt)
Serialize to "json_schema" or "yaml" (requires yuutools[yaml]).
ToolManager
Name-keyed registry with [] lookup, iteration, and .specs() for
bulk JSON schema export.
License
MIT
Metadata
Release files for yuutools 0.3.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
|---|---|---|---|---|
| yuutools-0.3.0.tar.gz | 5.6 kB | With provenance | Details for yuutools-0.3.0.tar.gz |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Actions Reset |
|---|---|---|---|---|
| yuutools-0.3.0-py3-none-any.whl | Python 3 | none | any | Details for yuutools-0.3.0-py3-none-any.whl |
Total release size: 13.6 kB
Release files / yuutools-0.3.0.tar.gz
| Download URL | yuutools-0.3.0.tar.gz |
|---|---|
| Size | 5.6 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
bbde4aa4268e207f6bfd728422d4a8ba5feb9fdad1de144df5125f782bb0ad18
|
|
BLAKE2b-256 checksum How to use checksums |
56f9c3512a374df1b2b489eaa1ecec3e1f1d6225b05230316bc660650114b78b
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/6.1.0 CPython/3.13.12
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Apr 24, 2026.
Transparency logRelease files / yuutools-0.3.0-py3-none-any.whl
| Download URL | yuutools-0.3.0-py3-none-any.whl |
|---|---|
| Size | 8.1 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
5bfcc73eb43286105cc34d8a533ac8eee9aa5d42c272a6272ca52fd5507a5669
|
|
BLAKE2b-256 checksum How to use checksums |
6d4a5326f5287022020b320f8d0a0af443d184d364676e5c60d8c9aa1b96662d
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/6.1.0 CPython/3.13.12
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Apr 24, 2026.
Transparency logSecurity for yuutools 0.3.0
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
Full provenance
All 2 files in this release have been uploaded with provenance metadata.
Attestation for yuutools-0.3.0.tar.gz
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Apr 24, 2026.
Transparency logA note on package security
PyPI is a repository for distributing packages, not a service for auditing them. While third-party security researchers and our staff do their best to detect and remove malicious packages, PyPI cannot guarantee the quality, security or suitability of any given package.
To learn more about protecting yourself from malicious actors, visit our package security documentation.