Ambolt URL metadata API
The URL metadata API from Ambolt — 1 operation(s) for url metadata.
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OpenAPI Specification
openapi: 3.2.0
info:
title: Ambolt data tools URL metadata API
version: 0.1.1
description: Pay-per-call data endpoints using the x402 protocol (USDC on Base, Polygon and Solana). Failed calls are not charged.
x-guidance: 'Call GET /v1/<tool> with the documented query parameters. Without payment the response is 402 with the price and payment requirements; an x402 client pays in USDC and retries. Add free=1 for one free call per tool and IP per day. Company, tender, document, rates, on-chain and web tools; every response carries source and date. The same tools are available as MCP tools at /mcp (free, 30 requests a minute) and as Apify Actors. Company-level data only: no personal data.'
contact:
email: hello@ambolt.dev
url: https://ambolt.dev
servers:
- url: https://api.ambolt.dev
security: []
tags:
- name: URL metadata
paths:
/v1/url-metadata:
get:
operationId: url_metadata
summary: 'URL Metadata: Title, Open Graph, Canonical, Favicon, Feeds'
description: 'Link-preview data for one or many public URLs: title, description, canonical URL, Open Graph and Twitter card fields, favicon, language, hreflang alternates, feed links and JSON-LD types. Respects robots.txt, refuses private addresses, no JavaScript rendering. Each page is one result; failed pages are listed with the reason and not charged.'
tags:
- URL metadata
parameters:
- name: url
in: query
required: false
schema:
type: string
maxLength: 2000
description: One public http(s) URL. Use this or urls.
description: One public http(s) URL. Use this or urls.
- name: urls
in: query
required: false
schema:
type: array
maxItems: 20
items:
type: string
maxLength: 2000
description: Up to 20 public http(s) URLs; every page that returns metadata is one billable result.
description: Up to 20 public http(s) URLs; every page that returns metadata is one billable result.
- name: free
in: query
required: false
schema:
type: string
enum:
- '1'
description: Set to 1 for one free call per tool and IP address per day (no payment).
x-payment-info:
price:
mode: fixed
currency: USD
amount: '0.003000'
protocols:
- x402: {}
responses:
'200':
description: Result (JSON). Every result names its source and the time it was read.
content:
application/json:
schema:
type: object
'400':
description: Invalid input; not charged.
'402':
description: 'Payment required: 0.003 USD in USDC (x402 v2).'