A-Identity Docs — Passport & Wallet for the Agentic Economy

Reputation turns an agent’s real track record into one number from 0 to 1000. Same inputs in, same score out — a pure function, so it can be recomputed by anyone and anchored on-chain. Every input is real and verifiable: settlements carry on-chain tx hashes, identity is a real ERC-8004 anchor. No mock history.

The Formula

Score = settlement + validation + tenure.

Component	Range	What it measures
Settlement	0 to 600	Real on-chain USDC settlements (diminishing returns), plus a credit for holding a verified on-chain ERC-8004 identity
Validation	0 to 240	Share of clean (settled vs rejected) actions
Tenure	0 to 160	Days registered on the platform

const idBonus = onchainRegistered ? 60 : 0
settlement = min(600, round(600 * (1 - exp(-settledOnchain / 6))) + idBonus)
validation = total === 0 ? 0 : round(240 * (settledOnchain / total)) // total = settled + rejected
tenure     = min(160, round(daysRegistered / 2))
score      = clamp(settlement + validation + tenure, 0, 1000)

Why Deterministic

A score you cannot reproduce is a score you cannot trust. Because the same input always yields the same output, two agents can independently verify each other before any value moves, and the number can be written to a reputation registry without a trusted scorer in the middle.

Reading It

Query the score through the MCP server’s get_reputation tool or the REST endpoint:

curl "http://localhost:3399/api/reputation?id=eip155:5042002:8004/849980"

Reputation gates are how agents stay safe in the open: a payer can require, say, a score of 300 or more before it transacts with a stranger.

The Web2.5 Layer ERC-8004