Claude Watermark Remover — Developer API & SDK

A free, open, keyless REST API to scan text for hidden characters, clean or rewrite it, and strip EXIF/XMP/C2PA metadata from images. One HTTPS POST, any language. It does not claim to remove statistical token watermarks.

Quickstart Try the Playground

quickstart.py

python

class=class="syn-string">"syn-comment"># No SDK, no key -- just POST
curl -X POST https:class=class="syn-string">"syn-comment">//api.claudewatermark.org/v1/text/clean \
  -H class=class="syn-string">"syn-string">"Content-Type: application/json" \
  -d &class=class="syn-string">"syn-comment">#39;{class=class="syn-string">"syn-string">"text":class=class="syn-string">"syn-string">"Your text here"}&#39;

1,000Free requests/month

<100msAverage latency

99.9%Uptime SLA

4Official SDKs

No SDK required

There is nothing to install. Every capability is a plain HTTPS POST to https://api.claudewatermark.org, so you can call it from any language or platform that speaks HTTP. No API key, no auth header, nothing stored.

🔍

Scan

Detect hidden zero-width and invisible characters in text.

POST /v1/text/scan

🧹

Clean

Strip those characters and normalize to Unicode NFC.

POST /v1/text/clean

✍

Rewrite

Paraphrase text to reduce statistical watermark signal.

POST /v1/text/rewrite

📷

Image strip

Remove EXIF, XMP, IPTC, and C2PA metadata from JPEG & PNG.

POST /v1/image/strip

Getting Started

Send a POST request and read the JSON response. No key, no setup.

bash

curl -X POST https:"syn-comment">//api.claudewatermark.org/v1/text/clean \
  -H "syn-string">"Content-Type: application/json" \
  -d &"syn-comment">#39;{"syn-string">"text":"syn-string">"Your Claude-generated content here..."}&#39;

javascript

class="syn-keyword">const res = await fetch(class=class="syn-string">"syn-string">"https:class=class="syn-string">"syn-comment">//api.claudewatermark.org/v1/text/clean", {
  method: class=class="syn-string">"syn-string">"POST",
  headers: { class=class="syn-string">"syn-string">"Content-Type": class=class="syn-string">"syn-string">"application/json" },
  body: JSON.stringify({ text: class=class="syn-string">"syn-string">"Your Claude-generated content here..." })
});
console.log((await res.json()).cleaned);

python

class="syn-keyword">import requests
r = requests.post(class=class="syn-string">"syn-string">"https:class=class="syn-string">"syn-comment">//api.claudewatermark.org/v1/text/clean",
                  json={class=class="syn-string">"syn-string">"text": class=class="syn-string">"syn-string">"Your Claude-generated content here..."})
print(r.json()[class=class="syn-string">"syn-string">"cleaned"])

Start Building Today

Sign up for a free API key and start removing Claude watermarks programmatically. No credit card required for the free tier. Upgrade as your usage grows with simple, predictable pricing.

Read the Docs Try the Playground