22:33
2026-08-24
mcpindex.ai
ai-agents
Letterbox (io.github.dovahkiin-v/letterbox@1.2.2)
Letterbox, a file-based comms protocol for AI-to-AI dialogue between terminal agents, released version 1.2.2 on 2026-08-24, published to the official MCP registry and distributed as letterbox on PyPI.…