Agent Embassy — Agent Identity Issuance

x402

Agent Embassy — Agent Identity Issuance is a paid API for AI agents from aemb.pro, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-11).

Issues a cryptographically verifiable agent identity and receipt after an agent pays for and completes a unit of work, establishing an auditable proof of action with liability boundaries.

Price / call$0.25

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Success—

StatusUnknown

How this service works

Agents pay for work and prove what happened.

Output

Returns a JSON object containing the tool name (agentid_issue), a proof chain array listing stages (request, authorization, action, proof, liability_boundary), a status field, the agent's account address, a 64-character hex agent_id, a unique receipt_id prefixed with 'emb_', and a receipt_version string (embassy-receipt/1). This receipt serves as an immutable, verifiable record of the agent's identity, payment, and action.

Example use cases

Autonomous agent task accountability

“My agent just finished a paid job — can you get it an Agent Embassy receipt that proves what it did, what it paid, and where the liability boundary sits? The agent account is 0xAbCd...1234.”

Multi-agent fleet identity management

“I'm running a fleet of AI agents and I need each one to have a verifiable agent ID issued by Agent Embassy after they pay for and complete their assigned work — start with the agent at address 0xDEAD...BEEF.”

Compliance audit trail for agent action

“For compliance purposes, I need a cryptographic proof from Agent Embassy showing exactly what my agent authorized, what action it took, and what payment it made — please issue the receipt for account 0x9999...AAAA so I have a full chain of evidence.”

Technical details

Endpoint

POSThttps://aemb.pro/v1/agent-id/issue?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a cryptographically anchored, machine-readable proof that an autonomous agent paid for and completed a specific action — especially in multi-agent systems requiring accountability, liability boundaries, or compliance audit trails. It is distinct from simple payment APIs because it issues a persistent agent identity and a structured proof chain, not just a payment confirmation.

Side effects

Payment not received or insufficient — 402 response before receipt is issued
Invalid or malformed account address — request rejected
Duplicate receipt attempt for the same action — may return conflict or deduplicated result
Network or chain timeout during proof generation — incomplete receipt
Authorization step fails — chain halted before action proof is created

Input

Schema · Request body

Field	Type	Description
agent_pubkey	string	The agent's public key (hex), the root of the Agent ID
principal_id	string	ID of the accountable principal on file with the Embassy
operator_name	string	Public name of the operator running the agent
validity_days	number	Days until the Agent ID expires; integer 1-730. Defaults to the Embassy standard when omitted
principal_kind	string	Kind of principal: human or legal_entity
idempotency_key	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.
principal_label	string	Public label for the principal
agent_key_scheme	string	Key scheme for agent_pubkey: eip191 or ed25519 (default eip191)
operator_contact	string	Public contact for the operator
principal_attestation_method	string	How the Embassy verified the principal

Output

Schema · Response

{
  "type": "json",
  "example": {
    "tool": "agentid_issue",
    "chain": [
      "request",
      "authorization",
      "action",
      "proof",
      "liability_boundary"
    ],
    "status": "complete",
    "account": "0x1111111111111111111111111111111111111111",
    "agent_id": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
    "receipt_id": "emb_9f8e7d6c5b4a3210fedcba98",
    "receipt_version": "embassy-receipt/2"
  }
}

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