kya-brasil

kya_register

Register an AI agent for a Brazilian company: agent key (EVM address or Web Bot Auth Ed25519 key), CNPJ and a mandate (JSON, validated against /.well-known/kya-mandate.schema.json). Returns a one-time challenge the agent signs with its key and the company signs with its e-CNPJ (CMS/PKCS#7). Price covers the KYB check at issuance.

Input Schema

TableJSON Schema

Name	Required	Description
`cnpj`	Yes	The company's CNPJ, with or without punctuation.
`agent`	Yes
`mandate`	Yes	Mandate JSON validated by https://kya-br-agents.marcelfons.workers.dev/.well-known/kya-mandate.schema.json. Reserved fields: actions, max_per_operation, max_per_day, currencies, counterparties, valid_from, valid_until.

Schema Changelog

Changes observed during successful MCP inspections.

Changed4 schema fields changedOct 13, 2026

changedInput schema / properties / agent / properties / id / description

Previous value: -"0x address for evm; base64url raw Ed25519 public key for web-bot-auth."New value: +"0x address for evm; base64url raw Ed25519 public key for web-bot-auth; eip155:<chainId>:<identityRegistry>:<agentId> for erc8004."

changedInput schema / properties / agent / properties / id / maxLength
```
Previous value: -128New value: +160
```

changedInput schema / properties / agent / properties / kind / description

Previous value: -"evm: an Ethereum-style wallet (EIP-191 signatures). web-bot-auth: an Ed25519 key (RFC 9421 / Web Bot Auth)."New value: +"evm: an Ethereum-style wallet (EIP-191 signatures). web-bot-auth: an Ed25519 key (RFC 9421 / Web Bot Auth). erc8004: an agent registered in an ERC-8004 Identity Registry; its on-chain agentWallet signs."

changedInput schema / properties / agent / properties / kind / enum

Previous value: -[
-  "evm",
-  "web-bot-auth"
-]New value: +[
+  "evm",
+  "web-bot-auth",
+  "erc8004"
+]

First observedOct 13, 2026

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