# Synapse API — Unified Intelligence & Automation APIs (RPC)

> Synapse API — Unified Intelligence & Automation APIs (RPC) is a paid API for AI agents from synapse-api-brown.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-24).

A JSON-RPC endpoint that routes AI processing, web scraping, and blockchain data utility calls across 57+ networks via a single pay-per-call interface.

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/stable/rpc?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-unified-intelligence-automation-apis-rpc-1dc19dbf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PZORfFkxnhjXhWXSxgvGw

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 synapse-api-unified-intelligence-automation-apis-rpc-1dc19dbf -d '<json body>'
```

Example prompt: Use the Synapse API RPC to scrape the content from https://example.com/article and extract the main body text — call the appropriate method with that URL as the parameter.

## When to prefer this

Choose this endpoint when you need a single pay-per-call RPC interface that spans AI processing, web scraping, and multi-chain blockchain queries without managing separate API keys or SDKs — especially useful for agents that need to switch between data domains dynamically and want micropayment-based billing via x402.

## Known failure modes

- Invalid or unsupported method name returns a JSON-RPC error object
- Malformed params array causes a parameter validation error
- Payment not provided or insufficient USDC results in HTTP 402 response
- Unsupported blockchain network identifier returns a network-not-found error
- Rate limiting or timeout on slow external data sources may return a timeout error

## How this service works

High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.

## Output

A JSON-RPC response body containing the return value of the invoked method — which may be scraped web content, AI-processed output, blockchain state data, or a computed utility result depending on the method called.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "method": {
   "type": "string"
  },
  "params": {
   "type": "array",
   "items": {}
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synapse-api-unified-intelligence-automation-apis-rpc-1dc19dbf/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from synapse-api-brown.vercel.app](https://www.zero.xyz/host/synapse-api-brown.vercel.app/llms.txt)