# Synapse API — Injective RPC Proxy

> Synapse API — Injective 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 2026-09-13).

Proxies JSON-RPC method calls to the Injective blockchain network, enabling on-chain data queries and transaction submissions via a pay-per-call API.

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/injective/rpc
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-injective-rpc-proxy-d9964993
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ex2NQEX0tZ3muTGx5NffT

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-injective-rpc-proxy-d9964993 -d '<json body>'
```

Example prompt: Send an Injective RPC call using method 'eth_getBalance' with params ['inj1...address', 'latest'] and return me the current balance.

## When to prefer this

Choose this endpoint when you need direct, low-latency RPC access to the Injective blockchain without running your own node, and are willing to pay per call via x402/USDC. Suitable for agents needing programmatic on-chain queries or transaction submission on Injective specifically, as opposed to EVM-compatible chains or other Cosmos chains.

## Known failure modes

- Invalid RPC method name returns JSON-RPC error with code -32601
- Malformed params array causes parse error -32700
- Payment not included or insufficient returns HTTP 402
- Rate limiting or node congestion may return timeout errors
- Invalid transaction data on broadcast returns execution 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 the raw JSON-RPC response from the Injective blockchain node, including result data (account balances, block info, transaction receipts, contract state) 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-injective-rpc-proxy-d9964993/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)