# SperaxOS ERC-8004 Agent Search-All

> SperaxOS ERC-8004 Agent Search-All is a paid API for AI agents from chat.sperax.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-23).

Searches across all ERC-8004 registered AI agents in the SperaxOS DeFi ecosystem, returning matched agent profiles and capabilities.

## Facts

- Endpoint: GET https://chat.sperax.io/api/x402/v1/erc8004/agents/search-all?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/speraxos-erc-8004-agent-search-all-df7cbbf8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qmAYKnxK-ZSehrBGKWWpp

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability speraxos-erc-8004-agent-search-all-df7cbbf8
```

Example prompt: Search the SperaxOS ERC-8004 agent registry for all AI agents that handle yield optimization or liquidity management on Base.

## When to prefer this

Use this endpoint when you need to discover or enumerate AI agents registered under the ERC-8004 standard within the SperaxOS DeFi platform, especially when you want to find agents by capability or name without holding a traditional API key. Prefer this over generic Web3 agent directories when your workflow targets Base chain DeFi agents specifically.

## Known failure modes

- Payment failure if USDC balance on Base is insufficient (402 response)
- No agents matching query terms returns empty result set
- Malformed query parameters return 400 error
- Network or RPC issues on Base chain may cause timeout
- Rate limiting if too many requests are submitted rapidly

## 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 a list of ERC-8004-registered AI agent profiles from the SperaxOS ecosystem, including agent names, on-chain addresses, described capabilities, supported DeFi protocols, and metadata conforming to the ERC-8004 agent standard.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/speraxos-erc-8004-agent-search-all-df7cbbf8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from chat.sperax.io](https://www.zero.xyz/host/chat.sperax.io/llms.txt)