# x402 SEO Keyword Ideas Tip Endpoint

> x402 SEO Keyword Ideas Tip Endpoint is a paid API for AI agents from x402-seo-api.restockalarm.workers.dev, paid per call via x402, $1/call, status unknown (last checked 2026-10-20).

Accepts a micropayment tip via x402 protocol on the Base blockchain and returns a confirmation receipt

## Facts

- Endpoint: GET https://x402-seo-api.restockalarm.workers.dev/v1/tip?utm_source=zero.xyz
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-seo-keyword-ideas-tip-endpoint-df6d9d2a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yW42fWvfjMBkLQ8wS2n47

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 x402-seo-keyword-ideas-tip-endpoint-df6d9d2a
```

Example prompt: Send a 1 USDC tip to the x402 SEO keyword ideas service on Base with the note 'great service' and confirm the payment went through.

## When to prefer this

Use this endpoint when you need to send a micropayment tip specifically via the x402 protocol on the Base blockchain and receive a payment confirmation receipt. It is appropriate when building pay-per-call web3 workflows or testing x402 payment flows rather than querying for actual SEO keyword data.

## Known failure modes

- Insufficient USDC balance causes payment failure
- x402 payment header missing or malformed results in 402 response
- Wrong network (non-Base) causes transaction rejection
- Note field exceeds 200 characters triggers validation error
- Network congestion delays confirmation

## How this service works

Pay $0.01-0.02 USDC per call on Base via x402

## Output

Returns a JSON object confirming the tip was received, including the amount paid (e.g. '1.00 USDC'), a boolean 'thanks' field set to true, a thank-you message string, and the network identifier (eip155:8453 for Base mainnet).

## 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",
     "required": [],
     "properties": {
      "note": {
       "type": "string",
       "description": "Optional short note with the tip (max 200 chars)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "amount": "1.00 USDC",
  "thanks": true,
  "message": "Thank you for the tip!",
  "network": "eip155:8453"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-seo-keyword-ideas-tip-endpoint-df6d9d2a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-seo-api.restockalarm.workers.dev](https://www.zero.xyz/host/x402-seo-api.restockalarm.workers.dev/llms.txt)