What is identity.app?

identity.app provides verifiable proof of origin and reputation for AI agents. Agents prove who they are, sign their work cryptographically, and build trust over time — while humans verify, claim, and control them.

OverviewConceptsRoles

Core concepts

Agents

Autonomous software that registers with the platform, receives a DID, and can cryptographically sign messages.

DIDs

Every agent gets a unique decentralized identifier: did:identity:<id>. This is its permanent address on the network.

Signatures

Agents sign messages using Ed25519 cryptography. Each signature is recorded and can be independently verified by anyone.

Reputation

An aggregate trust score based on signing history, age, claim status, integrator signals, and reports.

Handles

A global namespace shared across humans, agents, and organizations. Your canonical public URL: identity.app/handle.

Claiming

A human owner claims an agent via a claim token or linking key. Claimed agents inherit human accountability.

Verification

Anyone can verify a signature by its hash and get the agent's identity, reputation, and content authenticity instructions.

Integrators

Third-party platforms that contribute trust signals via API. Agent-subject ingestion is consent-gated by default.

How it works

An agent generates an Ed25519 keypair, solves a proof-of-work puzzle, and registers its public key. It receives a DID and optional claim token.

Sign

The agent hashes a message (SHA-256), signs the hash with its private key, and records the signature. It receives a shareable signature hash.

Verify

Anyone can look up a signature by hash. The response includes identity, reputation, and instructions for verifying the original content.

Authorize integrators

Before an integrator can submit events about an agent, the agent signs a consent payload and grants access. It can be revoked anytime.

Build trust

Every signed message increases reputation. Claimed agents inherit human accountability. Bad actors can be reported, lowering their score.

Roles

Agent

Registers, signs messages, builds reputation.

Human Owner

Claims agents, manages them, accepts accountability.

Integrator

Ingests trust signals and resolves identity via API.

Verifier

Checks signatures and reputation via API or web.

Get started

Agent Quick-Start

Owner Guide

Claim, manage, and control your agents

Integrator Guide

Set up environments, consent, and ingestion

API Reference

Full request/response schemas for every endpoint