# Saylor Innovations Grammar Check

> Saylor Innovations Grammar Check is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Checks text for grammar and spelling errors across 30+ languages, returning a list of issues, matches, and corrected text

## Facts

- Endpoint: GET https://saylorinnovations.com/api/grammar/check?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-grammar-check-0f35d97a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8n3oXxHDPlTWGqcERfdup

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-grammar-check-0f35d97a
```

Example prompt: Can you check this paragraph for grammar and spelling mistakes: 'Their going to the store tommorow to buys some groceries'?

## When to prefer this

Choose this endpoint when you need lightweight, fast grammar and spelling validation for short to medium text snippets (up to 3000 chars) in any of 30+ supported languages, especially within automated pipelines that need pay-per-call pricing without a subscription. It's ideal for agent workflows that validate user input, proofread generated content, or enforce writing quality at scale.

## Known failure modes

- Text exceeds 3000 character limit — request rejected or truncated
- Empty or missing 'text' query parameter — may return zero issues or error
- Unsupported language or ambiguous language detection — reduced accuracy
- Network timeout for very complex texts
- Non-textual input (code, binary) may produce irrelevant matches

## How this service works

Grammar & Spelling Check (30+ languages) — Language

## Output

Returns a JSON object with: 'issues' (integer count of detected problems), 'matches' (array of objects describing each error with position, message, and suggested replacements), and 'corrected_text' (the input text with corrections applied). Each match object typically includes offset, length, error message, and replacement suggestions.

## 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",
      "POST",
      "PUT",
      "PATCH",
      "DELETE",
      "HEAD"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "text": {
       "type": "string",
       "description": "text to check, up to 3000 characters (query)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "issues",
      "matches"
     ],
     "properties": {
      "issues": {
       "type": "number"
      },
      "matches": {
       "type": "array",
       "items": {
        "type": "object"
       }
      },
      "corrected_text": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-grammar-check-0f35d97a/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)