# Synapse API — Solana RPC Proxy

> Synapse API — Solana RPC Proxy 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 2026-10-12).

Proxies JSON-RPC method calls to the Solana blockchain network, allowing agents to query on-chain data or submit transactions via a pay-per-call API.

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/solana/rpc?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-solana-rpc-proxy-7d72a3e4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sPw-Dqf6Wpz5Xj5-pkqF9

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-solana-rpc-proxy-7d72a3e4 -d '<json body>'
```

Example prompt: Call the Solana RPC method getBalance with the account address 7v9...Xyz and return the lamport balance for that wallet.

## When to prefer this

Choose this endpoint when you need pay-per-call, no-subscription access to Solana RPC functionality without managing your own node or RPC provider credentials. It is well-suited for AI agents that make occasional or unpredictable Solana queries and want to pay micro-amounts per call via USDC x402 rather than committing to a monthly RPC plan.

## Known failure modes

- Invalid RPC method name returns an error response with code -32601
- Malformed params array causes a parse error or invalid params response
- Network congestion on Solana may cause timeouts or slot-related inconsistencies
- Submitting an invalid or expired transaction returns a transaction simulation failure error
- Missing or invalid x402 payment header results in a 402 Payment Required response before execution

## 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 standard Solana JSON-RPC response object, including a result field containing the requested on-chain data (e.g. account balance, block info, transaction confirmation) or an error field if the method call failed.

## 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-solana-rpc-proxy-7d72a3e4/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)