# SperaxOS getBridges API

> SperaxOS getBridges API is a paid API for AI agents from chat.sperax.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-03).

Returns a filtered, sorted list of DeFi cross-chain bridge protocols, optionally filtered by supported chain

## Facts

- Endpoint: POST https://chat.sperax.io/api/x402/tools/bridges/getBridges?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-03
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/speraxos-getbridges-api-a5ee3054
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NUcc713BfM6jOdesCBoGv

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-getbridges-api-a5ee3054 -d '<json body>'
```

Example prompt: Show me the top 10 DeFi bridges that support Arbitrum, sorted by volume.

## When to prefer this

Use this endpoint when you need a structured, up-to-date list of DeFi bridge protocols filtered by blockchain network and ranked by volume or name. Prefer this over general web search when you need machine-readable bridge data for DeFi routing, research, or agent-driven cross-chain planning. It requires no API key and charges only $0.001 USDC per call via x402.

## Known failure modes

- Invalid chain name returns empty list or error
- Unsupported sortBy value rejected with validation error
- Payment failure via x402 protocol results in 402 response
- Limit exceeding service maximum may be capped or rejected
- Network timeout if Sperax backend is unavailable

## 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

A list of cross-chain bridge protocols matching the query, including bridge names and volume data, filtered by the specified chain and sorted by the requested order (volume or name), up to the specified limit.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chain": {
   "type": "string",
   "description": "Filter bridges by supported chain (e.g. \"Ethereum\", \"Arbitrum\")"
  },
  "limit": {
   "type": "number",
   "default": 25,
   "description": "Max number of bridges to return (default 25)"
  },
  "sortBy": {
   "enum": [
    "volume",
    "name"
   ],
   "type": "string",
   "description": "Sort order: \"volume\" (default) or \"name\""
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/speraxos-getbridges-api-a5ee3054/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)