Is the Text Diff free?

Yes — free tier with the published rate limit. Authenticate with X-SEEKER-Key from your APISeeker dashboard.

Where is the live endpoint?

Call https://textdiff.apiseeker.com/v1/diff with your API key.

Text Diff API – Free Developer API

API Overview

Text Diff — Pass left and right as query parameters.

Compare left and right text and return added/removed/unchanged lines.

Why this API? Pass left and right as query parameters.

What makes it different

Free tier with API key auth
Host: textdiff.apiseeker.com
Rate limit: 30 req/min

Hosted by RSM DevOps.

Key features

Free tier with API key auth

Host: textdiff.apiseeker.com

Rate limit: 30 req/min

Live example

GET /v1/diff · sample request and response for this endpoint.

GET/v1/diffEndpoint docs →

Try it in the playground

left

Open live demo

Sample JSON

{
  "success": true,
  "data": {
    "changes": [
      {
        "op": "equal",
        "line": "a"
      },
      {
        "op": "remove",
        "line": "b"
      },
      {
        "op": "add",
        "line": "x"
      },
      {
        "op": "equal",
        "line": "c"
      }
    ]
  },
  "request_id": "req_example"
}

Popular use cases

Line-level diff between two text strings.

Developer utilities

Automation

Debugging

Limits: Free tools share platform rate limits · Not a substitute for production-grade security review of crypto choice

Auth: API key
Version: v1
Rate limit: 30 req/min
Updated: 5 Sept 2026

Simple pricing

Plans, quota and rate limits for this API.

Billed per request

Free

Requests: 1,000
Rate limit: 60 req / min
Quota type: Stops at quota

1,000 requests / month
Hard limit
Docs & playground

Start free

1,000 requests / mo

Popular

Standard

$21.99/mo

Requests: 25,000
Rate limit: 60 req / min
Quota type: Overage billed

25,000 requests / month
Overage billed after quota
Email support

Subscribe

25,000 requests / mo

Plus

$66.99/mo

Requests: 2,00,000
Rate limit: 300 req / min
Quota type: Overage billed

200,000 requests / month
Priority support

Subscribe

2,00,000 requests / mo

Scale

$134.99/mo

Requests: 10,00,000
Rate limit: 1,000 req / min
Quota type: Overage billed

1,000,000 requests / month
SLA options

Subscribe

10,00,000 requests / mo

Pricing for this API. Enterprise or custom contracts can be enabled from the admin or provider dashboard when needed.

Parameters

Name	In	Type	Required	Description
left	query	string	Yes	Original text
right	query	string	Yes	Updated text
X-SEEKER-Key	header	string	Yes	Your API Seeker key

Authentication

Send API key (header: X-SEEKER-Key) from a trusted backend.

HTTP

X-SEEKER-Key: YOUR_API_KEY

API endpoint

RapidAPI-style subdomain host. Customers call this URL; providers can set a separate upstream later.

slug · textdiff

textdiff.apiseeker.com

https://textdiff.apiseeker.com/v1

Endpoint slug: textdiff
Upstream (provider): Platform default routing

Frequently asked questions

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Text Diff

Text Diff

API Overview

Key features

Live example

Popular use cases

Simple pricing

Parameters

Authentication

RSM DevOps

Rate this API

Frequently asked questions

Related APIs

Ready to start with Text Diff?

Text Diff

API Overview

Key features

Live example

Popular use cases

Simple pricing

Parameters

Authentication

RSM DevOps

Frequently asked questions

Related APIs

Ready to start with Text Diff?

Rate this API