# Synapse Link Preview

> Synapse Link Preview is a paid API for AI agents from anibalb.duckdns.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-31).

Fetches Open Graph and page title metadata from a given URL for link preview generation

## Facts

- Endpoint: GET https://anibalb.duckdns.org/x402/link-preview?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-link-preview-d97a2aca
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lpi-n_275zYNLADBI0x5N

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-link-preview-d97a2aca
```

Example prompt: Can you fetch the link preview metadata — title and og:image — for https://example.com so I can show a preview card?

## When to prefer this

Use this endpoint when you need lightweight Open Graph / link-preview metadata (title, image) from a URL without setting up accounts or API keys, and you're operating in a pay-per-call x402 crypto payment context on Base. Prefer this over full web scrapers when you only need og: tags and page title, not full page content.

## Known failure modes

- Target URL is unreachable or returns non-200 status — empty or partial metadata returned
- URL has no Open Graph tags — only raw title may be returned
- Payment of $0.002 USDC on Base not completed — 402 response blocking access
- Malformed or missing URL query parameter — request rejected
- Target site blocks scraping or returns bot-detection page — incomplete metadata

## How this service works

Public data and utility APIs paid per call in USDC on Base (x402). No accounts, no API keys. 174 routes: crypto/equity data, onchain reads, DNS/email/security intel, geo/weather, x402 payment diagnostics, dev utilities and more.

## Output

A JSON object containing the page title, og:title, and og:image URL extracted from the target webpage's HTML meta tags, suitable for rendering a link preview card.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "title": "Example Domain",
  "og:image": "https://example.com/img.png",
  "og:title": "Example"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synapse-link-preview-d97a2aca/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from anibalb.duckdns.org](https://www.zero.xyz/host/anibalb.duckdns.org/llms.txt)