# Synapse API — Aptos RPC Endpoint

> Synapse API — Aptos 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 2026-09-13).

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

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/aptos/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-aptos-rpc-endpoint-efb5eac1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NrvQV0A2TIJhsm7R-PPm2

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-aptos-rpc-endpoint-efb5eac1 -d '<json body>'
```

Example prompt: Call the Aptos blockchain using the 'get_account_resources' RPC method with the account address '0x1' and return all the resources for that account.

## When to prefer this

Choose this endpoint when you need pay-per-call access to the Aptos blockchain RPC without managing your own node or API key subscriptions. It is well-suited for agents that interact with Aptos infrequently or need quick integration with the Aptos network through a standardized JSON-RPC interface paid via USDC microtransactions.

## Known failure modes

- Invalid RPC method name returns error with unknown method message
- Malformed params array causes parse or invalid params error
- Non-existent account address returns resource not found error
- Network congestion or Aptos node downtime causes timeout or service unavailable
- Payment failure via x402 blocks the request before it reaches the RPC layer

## 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 JSON-RPC response object containing the result field with blockchain data (account resources, transaction details, ledger info, 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-aptos-rpc-endpoint-efb5eac1/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)