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Category
Developer Tools
Pricing
Open Source
Type
TOOL
Date

About

A11 is an open-source runtime and RPC toolkit that turns ordinary async functions into typed "actions" with named, independently streamable inputs and outputs. The same action can run locally, across services or browsers, or be called by an AI model as a tool, letting developers move logic between processes and machines without changing how callers invoke it.

Why it made the leaderboard

Gives builders a single interface for defining agent capabilities that stream multimodal data and run unchanged locally, across services, or as AI tool calls.

Tags

ai-agentsrpcstreamingruntimeopen-sourcemultimodal

Media

A11

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Editorially curated, with community endorsements as a secondary signal. Corrections welcome.