signet-auth 0.5.0

Cryptographic action receipts for AI agents

signet-auth

Cryptographic action receipts for AI agents. Sign every tool call with Ed25519 — works with LangChain, LangGraph, LlamaIndex, Google ADK, Pydantic AI, Smolagents, Semantic Kernel, OpenAI Agents, AutoGen, CrewAI, and more.

Install

pip install signet-auth

Quick Start

from signet_auth import SigningAgent

agent = SigningAgent.create("my-bot", owner="alice")
receipt = agent.sign("web_search", params={"query": "signet"}, target="mcp://local")
print(receipt.id)

Framework Integrations

Framework	Import
LangChain / LangGraph	from signet_auth.langchain import SignetCallbackHandler
LlamaIndex	from signet_auth.llamaindex import SignetEventHandler
Google ADK	from signet_auth.google_adk import SignetPlugin
OpenAI Agents SDK	from signet_auth.openai_agents import SignetAgentHooks
Pydantic AI	from signet_auth.pydantic_ai import SignetMiddleware
Semantic Kernel	from signet_auth.semantic_kernel import SignetFunctionFilter
Smolagents	from signet_auth.smolagents import SignetStepCallback
AutoGen	from signet_auth.autogen import SignetAutogenHook
CrewAI	from signet_auth.crewai import SignetCrewCallback

Install with framework extras:

pip install signet-auth[langchain]     # LangChain / LangGraph
pip install signet-auth[llamaindex]    # LlamaIndex
pip install signet-auth[google-adk]    # Google ADK
pip install signet-auth[pydantic-ai]   # Pydantic AI
pip install signet-auth[semantic-kernel] # Semantic Kernel
pip install signet-auth[all]           # All frameworks

Links

• Full documentation & source
• npm (@signet-auth/core)
• Rust (signet-core)

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