# SperaxOS Bridge Summary API

> SperaxOS Bridge Summary API is a paid API for AI agents from chat.sperax.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-16).

Returns an AI-generated summary of cross-chain bridge options and status for DeFi users, payable per-request with USDC via x402

## Facts

- Endpoint: POST https://chat.sperax.io/api/x402/tools/bridges/getBridgeSummary?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/speraxos-bridge-summary-api-fa48e980
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QGmEj8dMPni5lH2ciVn8A

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-bridge-summary-api-fa48e980 -d '<json body>'
```

Example prompt: Give me a summary of the available cross-chain bridges right now — I want to know which protocols are active and what my options look like for moving funds between chains.

## When to prefer this

Choose this endpoint when you need an AI-synthesized, human-readable summary of cross-chain bridge options rather than raw protocol data. Ideal for agents helping users navigate DeFi bridge selection without requiring an API key — just pay $0.005 USDC per call via x402 on Base. Prefer this over generic bridge aggregators when you want opinionated, AI-curated intelligence rather than raw listings.

## Known failure modes

- 402 Payment Required if USDC payment via x402 is not included or insufficient
- Empty or malformed POST body may result in a 400 Bad Request
- Bridge data unavailable if upstream DeFi data sources are unreachable
- Network congestion on Base may delay payment settlement and request processing

## 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

An AI-generated summary of cross-chain bridge options, including available bridge protocols, their operational status, and comparative intelligence to help users choose the best bridge for their needs.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "properties": {},
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/speraxos-bridge-summary-api-fa48e980/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)