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Mat Web & Data Toolkit – Keyword & Bigram Extraction
x402
Mat Web & Data Toolkit – Keyword & Bigram Extraction is a paid API for AI agents from automatom.matt-d59.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).
Analyzes text or a URL's content to extract keyword frequencies, bigrams, word counts, and density percentages as structured JSON.
Price / call$0.01
Success—
StatusUnknown
How this service works
Fetches a public web page and returns its title, meta description, outbound links and readable plain text as JSON.
Output
Returns a JSON object containing total word count, count of unique words, an array of keywords (each with term, occurrence count, and density percentage), and an array of bigrams (two-word phrases, each with term, count, and density percentage).
Example use cases
SEO keyword audit for landing page
“Pull the top keywords and bigrams from https://mysite.com/landing-page and show me which ones have the highest density so I can see how well it's optimized.”
Competitive content research
“Analyze https://competitor.com/about and extract the most frequent single words and two-word phrases — I want to see what terms they emphasize most.”
Blog post keyword density check
“Take this text I wrote — 'AI agents pay for APIs automatically, letting agents pay services without human approval' — and extract the keyword and bigram frequencies with density percentages.”
Technical details
Endpoint
GEThttps://automatom.matt-d59.workers.dev/keywords?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need fast, structured keyword and bigram frequency analysis from either a live URL or raw text, especially for SEO auditing, competitive research, or content optimization. Prefer it over general-purpose scrapers when you specifically need term density metrics and bigram extraction in a single call.
Side effects
- Invalid or unreachable URL returns an error or empty result
- Text input too short yields statistically meaningless density values
- Private or paywalled pages may return incomplete or no content
- Missing required 'input' parameter causes a 400-level error
- Rate limiting or payment failure (x402) blocks the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"words": 15,
"bigrams": [
{
"term": "agents pay",
"count": 2,
"density_pct": 13.33
},
{
"term": "payments let",
"count": 1,
"density_pct": 6.67
}
],
"keywords": [
{
"term": "agents",
"count": 2,
"density_pct": 13.33
},
{
"term": "pay",
"count": 2,
"density_pct": 13.33
}
],
"unique_words": 13
}
}Tags
x402
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