Handler
Handler is an open-source A2A protocol client for software engineers building, testing, and operating agentic systems. It provides an interactive TUI, a scriptable CLI with structured output, and an MCP server that lets other agents integrate with A2A services directly. Handler also supports global and repo-scoped A2A server configuration with bearer, API key, mTLS, and OAuth2 client credentials auth.
Install
Install Handler from the PyPI package as a uv tool:
uv tool install a2a-handler
Or with pipx:
pipx install a2a-handler
Or with pip:
pip install a2a-handler
Quick Start
Open the interactive terminal UI:
handler tui
Inspect an A2A server's agent card:
handler card get --url http://localhost:8000
Send a message from the CLI:
handler message send --url URL --text "hello"
Open the full documentation:
handler docs
Run Without Installing
Run Handler with uvx:
uvx --from a2a-handler handler
Run Handler with pipx:
pipx run a2a-handler
Documentation
Read the documentation at https://handler.alduncanson.com.
1 maintainer
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
Source Distribution
Built Distribution
Filter files by name, interpreter, ABI, and platform.
If you're not sure about the file name format, learn more about wheel file names.
Copy a direct link to the current filters
File details
Details for the file a2a_handler-0.1.25.tar.gz.
File metadata
- Download URL: a2a_handler-0.1.25.tar.gz
- Upload date:
- Size: 105.7 kB
- Tags: Source
- Uploaded using Trusted Publishing? Yes
- Uploaded via: uv/0.11.31 {"installer":{"name":"uv","version":"0.11.31","subcommand":["publish"]},"python":null,"implementation":{"name":null,"version":null},"distro":{"name":"Ubuntu","version":"24.04","id":"noble","libc":null},"system":{"name":null,"release":null},"cpu":null,"openssl_version":null,"setuptools_version":null,"rustc_version":null,"ci":true}
File hashes
| Algorithm | Hash digest | |
|---|---|---|
| SHA256 |
2b3a834e1bcb5e86c45dedac5b01d7c8a98f083073486843e857594d7c80b061
|
|
| MD5 |
5611b4d6f4d5a882208f2e027d26be33
|
|
| BLAKE2b-256 |
1fd913626a338962c9362e26c8af801163a4b0848344ed1979e6da53019328e4
|
File details
Details for the file a2a_handler-0.1.25-py3-none-any.whl.
File metadata
- Download URL: a2a_handler-0.1.25-py3-none-any.whl
- Upload date:
- Size: 132.1 kB
- Tags: Python 3
- Uploaded using Trusted Publishing? Yes
- Uploaded via: uv/0.11.31 {"installer":{"name":"uv","version":"0.11.31","subcommand":["publish"]},"python":null,"implementation":{"name":null,"version":null},"distro":{"name":"Ubuntu","version":"24.04","id":"noble","libc":null},"system":{"name":null,"release":null},"cpu":null,"openssl_version":null,"setuptools_version":null,"rustc_version":null,"ci":true}
File hashes
| Algorithm | Hash digest | |
|---|---|---|
| SHA256 |
908fc61773fba726bc20e6216352d89a536cdb26ec089098e77d5a24b761ef2d
|
|
| MD5 |
2ae43eb6db5d38ffe186a3ad46c26ff7
|
|
| BLAKE2b-256 |
2f35888061a52a1cf31fd515bf56f4ebe68a0224ddaa86aaf97e0e92ab41e2dc
|
