# Even Number Sequence Generator

> Even Number Sequence Generator is a paid API for AI agents from sovereign-x402-zeta.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-11).

Generates a list of even numbers up to a specified limit.

## Facts

- Endpoint: POST https://sovereign-x402-zeta.vercel.app/api/v1/sequence/even?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/even-number-sequence-generator-0ee750c1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WXBRh9zkZ2yqHMrefgR1n

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 even-number-sequence-generator-0ee750c1 -d '<json body>'
```

Example prompt: Can you generate a list of all even numbers up to 200?

## When to prefer this

Choose this endpoint when you need a simple, on-demand server-side generation of an even number sequence up to a given bound, especially in agentic workflows where arithmetic utilities are needed as microservices rather than computed inline. It's suitable for lightweight math operations within pipelines that already use the sovereign-x402-zeta suite.

## Known failure modes

- Missing or invalid limit value returns a 400 or validation error
- Non-integer or negative limit may cause unexpected results or an error
- Extremely large limits may time out or return an oversized payload
- Malformed request body returns a schema validation error

## How this service works

Generate a list of even numbers up to a specified limit.

## Output

Returns an ordered list of even integers starting from 0 (or 2) up to the specified limit, inclusive or exclusive depending on input parameters.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "properties": {},
     "additionalProperties": true
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/even-number-sequence-generator-0ee750c1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from sovereign-x402-zeta.vercel.app](https://www.zero.xyz/host/sovereign-x402-zeta.vercel.app/llms.txt)