# Synapse API — Pharos RPC Endpoint

> Synapse API — Pharos RPC Endpoint 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 2026-09-15).

Proxies JSON-RPC calls to the Pharos blockchain network, enabling agents to query chain state, submit transactions, and interact with Pharos smart contracts.

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/pharos/rpc
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-pharos-rpc-endpoint-1e8c881b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_j0gTu7G0YhWHpeu2mtY7B

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-pharos-rpc-endpoint-1e8c881b -d '<json body>'
```

Example prompt: Can you call eth_getBalance on the Pharos network for wallet address 0xABC123... and tell me the current balance?

## When to prefer this

Choose this endpoint when you specifically need to interact with the Pharos blockchain network via standard JSON-RPC. It is suited for agents that need low-cost ($0.01 USDC per call) pay-per-use access to Pharos RPC without managing infrastructure. Prefer alternatives if you need a different EVM chain (the sibling endpoints cover 57+ networks) or if you need REST-style blockchain APIs rather than raw JSON-RPC.

## Known failure modes

- Invalid RPC method name returns JSON-RPC error with code -32601 (method not found)
- Malformed params array causes parse or invalid params error (-32700 / -32602)
- Network congestion or node unavailability returns 503 or timeout
- Payment failure via x402 prevents request from reaching the node
- Unsupported Pharos-specific method returns not-implemented 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

Returns a standard JSON-RPC response object containing the result field with blockchain data (balance, block info, transaction receipt, contract return value, etc.) or an error object with code and message if the call fails.

## 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-pharos-rpc-endpoint-1e8c881b/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)