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AgentFacts vs Fine

Focuses on building AI agents rather than providing identity verification.

Side by side

What it is
AgentFacts:AgentFacts is an open-source Python SDK that gives AI agents cryptographic identities, signed metadata and transparency logs.
Fine:Build Software with AI Agents.
Best for
AgentFacts:Verifiable AI agent identities
Fine:General AI agent development
Who it’s for
AgentFacts:Developers building autonomous AI agents who need verifiable, portable identities.
Fine:—
Pricing
AgentFacts:Open source
Fine:Free
Open source
AgentFacts:Yes, 33 GitHub stars
Fine:—
Works with
AgentFacts:Python, LangChain, Hugging Face, Any verified credential provider, UCP, TAP, AgentPay, A2A
Fine:—
DevHunt upvotes
AgentFacts:2
Fine:75
Launched on DevHunt
AgentFacts:Jan 2026
Fine:Jan 2023

AgentFacts features

  • Decentralized IDs. Creates self-sovereign DIDs stored in an immutable transparency log.
  • Signed Metadata. Signs capabilities, policies and model hashes with Ed25519 for tamper-evidence.
  • Transparency Log. Records every registration and update in an immutable Merkle log.
  • Policy Compliance. Embeds GDPR, HIPAA and other compliance assertions that are verified before execution.
  • Discovery Card. Publishes a /.well-known/agentfacts.json card for easy agent discovery and verification.
  • Protocol Adapters. Generates adapters for UCP, TAP, AgentPay and A2A agent-to-agent exchanges.

Fine features

Build Software with AI Agents.

Based on each tool's website and DevHunt data. Details may change; check the official sites.