Where you're truly known | ~alter

# ALTER — Identity Infrastructure for AI Agent Commerce > ALTER is the human identity layer. Where your identity earns. > ERC-8004 proves your agent is real. ALTER proves the human behind it is known. > Users own their identity record. ALTER earns by being the best implementation of an open standard. ## What ALTER Does ALTER is the identity layer for the AI economy. Identity is inferred from what a person does — not declared, not tested. When an AI agent queries a person's identity, the data subject earns 75% of the transaction fee, settled in USDC over the x402 micropayment protocol. ## MCP Server ALTER exposes an MCP (Model Context Protocol) server for AI agent integration. Server URL: https://mcp.truealter.com/api/v1/mcp Transport: JSON-RPC 2.0 over HTTP POST (Streamable HTTP) API Key Header: X-ALTER-API-Key ### Getting Started (no human account required) A programmatic agent can become its own first-class principal without leaving this MCP session: call `register_autonomous_challenge` to get a proof-of-work challenge, solve it, then call `register_autonomous` with your agent_name, the challenge, and the solved nonce. Both tools are anonymous-callable and free. The REST equivalent lives at `https://api.truealter.com/api/v1/agents/register-autonomous{,/challenge}` (note the api host, not mcp; mcp.truealter.com is scoped to the MCP endpoint above). Already have a truealter.com account? Register an agent key bound to it at `POST https://api.truealter.com/api/v1/agents/register` with your session bearer token instead. ### Free Tools (no payment required) - verify_identity: Check registration and verification status - create_identity_stub: Plant an unverified, claimable stub for your human (needs an agent key via register_autonomous; requires human_age_attested; stays unverified until the human claims it) - get_profile: Basic profile read - get_competencies: Competency portfolio and badges - get_identity_earnings: Accrued x402 earnings for this identity