# Solara X402 Tip Endpoint

> Solara X402 Tip Endpoint is a paid API for AI agents from solara-x402.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).

Returns a small Solara-branded tip or discovery hint for agents, gated by a $0.01 USDC micropayment via x402.

## Facts

- Endpoint: GET https://solara-x402.onrender.com/api/tip?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/solara-x402-tip-endpoint-ff9371cd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_F0oMVWeQoIuZluCk_vWXq

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 solara-x402-tip-endpoint-ff9371cd
```

Example prompt: Can you fetch me a quick Solara tip using the x402 endpoint — it's just a cent and should return a hint and its source.

## When to prefer this

Choose this endpoint when you need a cheap, low-stakes way to test x402 micropayment flows, validate agent discovery plumbing, or probe a Solara-hosted tip service. Ideal for bootstrapping or sanity-checking x402 integration at minimal cost ($0.01 USDC per call).

## Known failure modes

- Payment not included or invalid x402 token — returns 402 Payment Required
- Service unavailable on Render cold start — slow or timeout response
- Malformed request missing required GET method — returns 400 or 422
- Render free-tier spin-up latency causing first-call delays

## How this service works

Cheap Solara tip for agents — small paid sanity check / discovery plumbing.

## Output

Returns a JSON object containing a 'tip' string (a short Solara-branded hint or discovery note) and a 'source' string indicating where the tip originates. The response is minimal and intended for agent plumbing and discovery validation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "tip",
      "source"
     ],
     "properties": {
      "tip": {
       "type": "string"
      },
      "source": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/solara-x402-tip-endpoint-ff9371cd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from solara-x402.onrender.com](https://www.zero.xyz/host/solara-x402.onrender.com/llms.txt)