# Saylor Innovations Text Tools – Keyword & Keyphrase Extraction (RAKE)

> Saylor Innovations Text Tools – Keyword & Keyphrase Extraction (RAKE) is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).

Extracts keywords and key phrases from a block of text using the RAKE algorithm, returning each phrase with a relevance score from 0–100.

## Facts

- Endpoint: GET https://saylorinnovations.com/api/text/keywords?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-text-tools-keyword-keyphrase-extraction-rake-6455f8e0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_v47eoVsxhW6P8nBu6yDQo

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 saylor-innovations-text-tools-keyword-keyphrase-extraction-rake-6455f8e0
```

Example prompt: Can you pull out the most important keywords and key phrases from this article text and show me their relevance scores? Here's the text: 'Artificial intelligence is transforming how businesses operate, with machine learning models now automating complex decision-making processes across finance, healthcare, and logistics.'

## When to prefer this

Choose this endpoint when you need lightweight, fast, unsupervised keyword and keyphrase extraction with relevance scoring from arbitrary text — especially when you don't want to run your own NLP pipeline. It is well-suited for SEO analysis, auto-tagging, content summarization prep, and theme detection. Prefer it over full LLM summarization when you want deterministic, score-ranked phrase output rather than prose summaries.

## Known failure modes

- Missing 'text' query parameter returns an error
- Text exceeding 20,000 characters may be rejected or truncated
- Very short or single-word inputs may return low-quality or empty keyword arrays
- Non-English text may produce lower-quality results depending on RAKE language support
- Network or upstream service errors return a non-200 HTTP response

## How this service works

Keyword and key phrase extraction from text with relevance scores (RAKE)

## Output

Returns a JSON object with an array of keyword/keyphrase objects, each containing the phrase string, a relevance score (0–100), and word count. Also includes total count of phrases returned, the extraction method used ('RAKE'), and a UTC timestamp of when the analysis was run.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "text"
     ],
     "properties": {
      "text": {
       "type": "string",
       "description": "Text to analyze (up to 20000 characters)."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "keywords"
     ],
     "properties": {
      "count": {
       "type": "number",
       "description": "Number of items returned"
      },
      "method": {
       "type": "string",
       "description": "Method used"
      },
      "keywords": {
       "type": "array",
       "items": {
        "type": "object",
        "required": [
         "phrase",
         "score"
        ],
        "properties": {
         "count": {
          "type": "number",
          "description": "Number of items returned"
         },
         "score": {
          "type": "number",
          "description": "Score from 0 (worst) to 100 (best)"
         },
         "words": {
          "type": "number",
          "description": "Words"
         },
         "phrase": {
          "type": "string"
         }
        }
       },
       "description": "Keywords or key phrases"
      },
      "checked_at": {
       "type": [
        "string",
        "null"
       ],
       "description": "Time the check was run (UTC)"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-text-tools-keyword-keyphrase-extraction-rake-6455f8e0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)