Agent Card Resolve

Resolves an ERC-8004 agentId to its on-chain owner, agentURI, and agent card JSON.

Overview

Resolves an ERC-8004 agentId to its on-chain owner, agentURI, and agent card JSON. Pass an agentId (uint256 on Base) — returns the owner address, the agentURI from the Identity Registry, and the resolved agent card JSON (set fetch_card=false to skip the HTTP follow-up). Reads from Base mainnet Identity Registry [redacted] via a static eth_call (no gas, no wallet); useful for agents discovering peers in the A2A ecosystem. Use it as an agent card resolver, ERC-8004 Identity Registry lookup, Trustless Agents query, A2A identity check, agent.json fetch, or on-chain agent metadata reader.

Endpoint

Method	Endpoint	Price	Description
POST	/v1/marketplace/api/agent-card-resolve	$0.00575	Invoke Agent Card Resolve (Blockchain) and return the upstream response.

How to call it

Requests are paid per call over the x402 protocol. Call the endpoint, receive a 402 Payment Required quote, then repeat the request with the signed payment header. The SDKs do both steps for you.

# 1. Ask for a quote
curl -i -X POST https://api.jarvisclaw.ai/v1/marketplace/api/agent-card-resolve \
  -H 'Content-Type: application/json' \
  -d '{}'

# 2. Pay it (the SDK signs and retries for you)
curl -X POST https://api.jarvisclaw.ai/v1/marketplace/api/agent-card-resolve \
  -H 'Content-Type: application/json' \
  -H 'X-PAYMENT: <signed-payload>' \
  -d '{}'

Open in the marketplace