A2CR Source-Available License Notice
BUSL-1.1 style terms

Copyright (c) 2026 A2CR

IMPORTANT:
This repository is source-available, not OSI-approved open source.
The official A2CR MCP client is made public so users can inspect it, use it,
contribute fixes, and connect AI agents to the official A2CR service.

The licensed work is:

  a2cr-mcp, including the local stdio MCP wrapper, package source code,
  public examples, and wrapper tests in this repository.

Additional Use Grant:

You may use the Licensed Work for personal use, internal business use,
research, evaluation, contribution, documentation, testing, and for connecting
to the official A2CR hosted service at https://a2cr.app.

Internal business use does not include offering the Licensed Work, or a service
substantially based on it, to third parties as a hosted, managed, or relay
service.

Commercial Restriction:

Offering a competing hosted or managed A2CR-compatible relay service based on
the Licensed Work, including the official A2CR MCP client, requires a
commercial license from A2CR.

Change Date:

  2030-05-13

Change License:

  Apache License, Version 2.0

On the Change Date, the Licensed Work will be made available under the Change
License.

Specification License Separation:

The WorkBaton Format specification is licensed separately. See
docs/spec/LICENSE.md. You may implement the WorkBaton Format without permission,
subject to the trademark rules in TRADEMARK.md.

Disclaimer:

These terms are intended to express A2CR's source-available/open-core project
model. They should be reviewed by a qualified legal professional before major
commercial use, enforcement, or relicensing decisions.

THE LICENSED WORK IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT.
