AXI: Agent eXperience Interface

AXI (Agent eXperience Interface) proposes 10 design principles for agent-ergonomic CLI tools that treat token budget as a first-class constraint.
AXI claims 100% task success at the lowest cost across two benchmarks and 915 runs.
It reports lower average cost and shorter average task duration than the compared chrome-devtools-mcp variants.
AXI’s goal is to combine MCP-like reliability and discoverability with CLI-like cost efficiency.
The project argues that CLI tools create action-observation separation problems for agents.
It also argues that MCP tools impose high schema overhead for agents.
The benchmarks include 490 browser automation runs and 425 GitHub API runs across seven interface conditions.
Reference implementations include gh-axi for GitHub operations and chrome-devtools-axi for browser automation.
gh-axi wraps the official GitHub CLI with agent-ergonomic output.
chrome-devtools-axi supports browser automation with combined operations and query filtering while wrapping chrome-devtools-mcp.

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