# Synapse API — Humanity RPC Endpoint

> Synapse API — Humanity 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 2026-10-10).

Exposes a JSON-RPC interface for humanity/identity-related blockchain queries across 57+ networks, paid per-call via x402.

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/humanity/rpc?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-humanity-rpc-endpoint-fe35ce51
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5BzdFgSH-XTe2Qc8_YgPo

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-humanity-rpc-endpoint-fe35ce51 -d '<json body>'
```

Example prompt: Check whether the wallet address 0xAbC123... is registered as a verified human on the humanity protocol — call the eth_getHumanityStatus method with that address as the param.

## When to prefer this

Choose this endpoint when you need to query humanity/proof-of-personhood data directly via a JSON-RPC interface on a blockchain network, especially when integrating with the Synapse API's pay-per-call x402 micropayment model. Prefer this over generic blockchain RPC providers when specifically querying humanity protocol data.

## Known failure modes

- Invalid RPC method name returns method not found error
- Malformed params array causes invalid params error
- Unpaid or failed x402 payment returns 402 Payment Required
- Unsupported network or address format returns an error
- Rate limiting or quota exhaustion returns 429 or similar

## 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 of the requested humanity-related method call, such as verification status, credential data, or registry lookup results for the queried blockchain address or entity.

## 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-humanity-rpc-endpoint-fe35ce51/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)