# Relaystation Contact Sheet Generator

> Relaystation Contact Sheet Generator is a paid API for AI agents from api.relaystation.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Tiles multiple images into a single contact-sheet thumbnail grid PNG for visual indexing in one API call

## Facts

- Endpoint: POST https://api.relaystation.ai/v1/image/contact-sheet
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/relaystation-contact-sheet-generator-597e6b2a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_x51d3pf7O7GVKea4aVI_I

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 relaystation-contact-sheet-generator-597e6b2a -d '<json body>'
```

Example prompt: Take these 12 product photo URLs and tile them into a single contact-sheet PNG with 4 columns and 3 rows, each thumbnail at 200x200 pixels.

## When to prefer this

Use this endpoint when you need to visually index multiple images in a single composited PNG without installing desktop software. It's ideal for generating proof sheets, dataset previews, or catalog thumbnails programmatically. Prefer it over client-side solutions when running in serverless or agent environments where image libraries aren't available.

## Known failure modes

- Invalid or unreachable image URLs cause fetch failures
- Mismatched grid dimensions vs number of images may leave empty cells or error
- Unsupported source image formats may cause decoding errors
- Exceeding payload size or image count limits returns an error
- Insufficient USDC balance or x402 payment failure blocks the request

## How this service works

$0.0003/MP. Tile many images into one thumbnail-grid PNG — visual index in a single call. 1¢ x402 min; remainder auto-credits — relaystation.ai/penny

## Output

A single PNG image file containing all provided images arranged in a thumbnail grid layout, returned as binary image data or a URL to the generated contact sheet PNG.

## 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": {
     "properties": {}
    },
    "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/relaystation-contact-sheet-generator-597e6b2a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.relaystation.ai](https://www.zero.xyz/host/api.relaystation.ai/llms.txt)