Universal semantic language for AI agent communication
AXL Protocol compresses English prose into structured semantic packets that any LLM can parse on first read. Apache 2.0, community-stewarded, free in perpetuity for the protocol and the public tooling.
The kernel is small (75 lines for v3.1), the parser surface is shared across vendors, and the productization arc - compression tool, agent bus, MCP integrations, public docs - all ship under the same license. There is no enterprise tier and no relicensing trap.
- v3.1 (Ship, productized) - 75-line kernel + Data Anchoring extension - https://axlprotocol.org/v3.1
- v4.0.1 (research preview) - kernel-router + 3 pluggable Rosetta modules - https://axlprotocol.org/rosetta/v4/
The v3.1 kernel is the recommended target for production usage. v4 is in active development and ships behind a router so v3.1 callers continue to work unchanged during the transition.
| Surface | What it is |
|---|---|
| axlprotocol.org | Main site, spec endpoints, evidence, posts |
| compress.axlprotocol.org | Free public AXL compression tool |
| bridge.axlprotocol.org | Agent pub-sub bus |
| docs.axlprotocol.org | Installation, API reference, FAQ |
| lang.axlprotocol.org | Research artifacts, evolution narrative |
| /community/ | Discussions hub (canonical conversation venue) |
| /laboratory/ | 36 experiments, chronological |
| /channels/ | Where AXL publishes |
pip install axl-core - the reference implementation in Python.
from axl_core import compress, decompress
packet = compress("your prose here")
prose = decompress(packet)Bridge clients, MCP tool integrations, and the compression tool's API surface are documented at docs.axlprotocol.org.
We welcome contributions of code, documentation, RFC participation, and experiment reports. See CONTRIBUTING.md for the workflow, CODE_OF_CONDUCT.md for community standards, and GOVERNANCE.md for the founding-steward + public-RFC model.
Discussions canonical venue: github.com/axlprotocol/community/discussions. Also surfaces at the org-level page. Portal page on the website: axlprotocol.org/community/.
Report vulnerabilities privately. See SECURITY.md and .well-known/security.txt (RFC 9116).
Apache 2.0 across the public stack. See LICENSE.