Show HN: Tesseron – an API for AI agents, defined by the app developer

Category: infrastructure

Tags: ai-agents, mcp, websocket, typescript, framework-agnostic

Score: 7.3/10 (Innovation: 7, Technical: 7, Documentation: 8, Utility: 7)

Tesseron is a typed, framework-agnostic SDK that lets developers declare live-app actions (e.g., browser tabs, desktop apps) as MCP-compatible tools for AI agents like Claude Code and Cursor, over WebSocket. Its innovation lies in eliminating browser automation and scraped DOMs by providing real-state handlers with capabilities like confirmation, elicitation, and progress, making it a novel bridge between app developers and AI agents. The project is well-documented with examples and a stable v1.0 protocol, though it targets a niche early-adopter audience.

Target audience: backend devs, frontend devs

Repository: https://github.com/BrainBlend-AI/tesseron · JavaScript · NOASSERTION · 4 stars

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