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SperaxOS ERC-8004 Agent Metadata Lookup
x402
SperaxOS ERC-8004 Agent Metadata Lookup is a paid API for AI agents from chat.sperax.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-18).
Retrieves on-chain ERC-8004 metadata for a given DeFi agent identity (agentId) via a pay-per-request x402 endpoint
Price / call$0.001
Success—
StatusUnknown
How this service works
AI-powered DeFi intelligence APIs payable via the x402 HTTP payment protocol. No API key required — pay per request with USDC on Base. Identity-only (SIWX) endpoints are free for wallets with an agentcash identity.
Output
Returns the ERC-8004 standard metadata record associated with the given agentId, including on-chain agent identity fields, registered capabilities, and any profile attributes stored by SperaxOS for that agent on Base.
Example use cases
Verify DeFi agent identity before interaction
“Before I let this agent manage any of my funds, pull up its ERC-8004 metadata from SperaxOS for agent ID 0x7f3a9c... — I want to confirm its registered identity and what capabilities it claims.”
Audit agent registry for a fleet
“I'm auditing our agent fleet — can you fetch the SperaxOS ERC-8004 metadata records for agent ID 0xd4e5f6 and tell me what identity and profile information is registered on-chain?”
Resolve agent profile for DeFi integration
“We're integrating a new DeFi agent with agent ID 0x1b2c3d into our platform — look up its ERC-8004 metadata on SperaxOS so I can confirm its on-chain profile before whitelisting it.”
Technical details
Endpoint
GEThttps://chat.sperax.io/api/x402/v1/erc8004/metadata/%7BagentId%7D?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to resolve the standardized ERC-8004 on-chain identity and metadata for a specific DeFi agent registered with SperaxOS on Base. Prefer this over generic blockchain explorers when you need structured, AI-intelligence-enriched agent profile data and are willing to pay micro-amounts in USDC via x402 rather than manage API keys.
Side effects
- agentId not found — agent not registered or wrong ID format returns 404 or empty record
- x402 payment failure — insufficient USDC balance or malformed payment header returns 402
- invalid agentId format — non-address or malformed path parameter returns 400
- network or RPC error reading Base chain data returns 503
- agent has no ERC-8004 record deployed — returns empty or null metadata
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string |
Tags
x402
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