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Delx Commerce — Is-Blank Text Validator
x402
Delx Commerce — Is-Blank Text Validator is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Checks whether a given text string is blank, whitespace-only, or empty, returning a boolean result with length metadata.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON object with: `blank` (boolean indicating if the text is blank or whitespace-only), `whitespace_only` (boolean indicating if text contains only whitespace characters), `length` (integer character count of the input), and `schema` (a version identifier string like 'delx/util-is-blank/v1').
Example use cases
Form submission validation
“Before I save this user's bio to the database, check if what they entered — ' ' — is actually blank or just spaces.”
Agent input guard before pipeline
“I'm about to run a summarization pipeline on this input: '\n\t'. Can you check if it's actually empty or whitespace-only before I waste API calls?”
Chat response quality check
“The user's reply came back as ' ' — can you tell me if that's blank or if there's real content in there?”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/is-blank?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, pay-per-result check on whether a string is blank or whitespace-only without setting up any auth or subscriptions. Ideal for AI agent pipelines that need to guard against empty inputs before calling expensive downstream APIs. Prefer this over rolling your own logic when you want verifiable, auditable results on Base or Solana via x402 micropayments.
Side effects
- Missing or null `text` field in request body may return a validation error
- Very large text strings may hit size limits
- Network or payment processing failure may result in no response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | Input field: text. |
Output
Schema · Response
{
"type": "json",
"example": {
"blank": true,
"length": 3,
"schema": "delx/util-is-blank/v1",
"whitespace_only": true
}
}Tags
x402
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