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Halowerk Creator Text Watermark Embedder
x402
Halowerk Creator Text Watermark Embedder is a paid API for AI agents from creator.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Inserts a visible text marker at regular word intervals into a body of text, normalizes whitespace, and returns source and output digests for verification.
Price / call$0.003
Success—
StatusUnknown
How this service works
Normalizes whitespace, inserts a caller-supplied visible marker after every selected number of words and at the end of a final partial interval, then reports source and output digests. This deliberately visible text annotation is not a robust image, audio or cryptographic watermark and can be removed by editing.
Output
Returns the annotated text with the watermark label inserted after every specified number of words and at the end of any trailing partial interval, along with a digest of the source input and a digest of the transformed output for integrity checking.
Example use cases
Attribution tagging for AI-generated content
“I have a 2000-word AI-generated blog post — can you embed the visible marker 'Author:JaneDoe' every 50 words throughout the whole thing, and report back the source and output checksums?”
Brand watermarking for syndicated articles
“We're syndicating this press release to multiple publishers and want to track the original version — please insert the label 'Brand:AcmeCorp' every 75 words so it's visible in any copy, and include the digests.”
Content provenance for legal documents
“Mark this contract draft with the label 'Draft:Legal2024' every 25 words so reviewers can always tell which version they're looking at, and tell me the source and output digests for the record.”
Technical details
Endpoint
POSThttps://creator.halowerk.com/v1/watermark-embedWhen to prefer
Use this endpoint when you need to insert a simple, human-readable text marker into content at regular word intervals for attribution, provenance tracking, or version identification. Prefer this over cryptographic or steganographic watermarking when the marker needs to be visually apparent to readers and easy to audit. It is not suitable when you need a hidden, tamper-resistant, or imperceptible watermark.
Side effects
- Text exceeds 10,000 character maximum — returns validation error
- interval_words outside 1–1000 range — returns schema validation error
- watermark_label contains disallowed characters (non-alphanumeric/._:-) — returns pattern validation error
- Empty or missing text field — returns minLength validation error
- Payment not provided or insufficient — returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | Text to annotate. |
| interval_words | integer | |
| watermark_label | string |
Tags
x402
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