Webhook Tester — Live Payload Inspector
Generate a unique webhook URL and receive live HTTP requests. Inspect request headers, method, body, and timestamp in real time. No account required — payloads are stored temporarily for debugging.
How to Use Webhook Tester — Live Payload Inspector
How to Use the Webhook Tester
Step 1: Copy Your Webhook URL
A unique webhook URL is generated automatically when you open the tool. Click Copy URL to copy it to your clipboard.
Your URL looks like:
https://100plus.tools/api/webhook/test/{session-id}
This URL accepts any HTTP method — POST, GET, PUT, PATCH, DELETE.
Step 2: Send a Request
Configure your service, CI script, or API client to send a request to your webhook URL. Common methods:
curl:
curl -X POST https://100plus.tools/api/webhook/test/{session-id} \
-H "Content-Type: application/json" \
-d '{"event":"order.created","order_id":123}'
GitHub Actions / Stripe / Shopify: Paste the URL into the webhook configuration field in your service and send a test event.
Step 3: Inspect the Request
Incoming requests appear in the Requests panel within seconds. Click any request to view:
- HTTP method (POST, GET, etc.)
- Timestamp
- Full request headers
- Raw request body (JSON is auto-formatted)
Step 4: Copy or Share
Click Copy Request to copy the full request details as JSON for logging or sharing with your team.
Notes
- Requests are stored temporarily (up to 1 hour) and are not persisted long-term
- The session ID in your URL is unique — only you know it
- Sessions hold up to 50 requests; older ones are automatically removed
- Refresh the page to generate a new session ID and start fresh
Frequently Asked Questions
Most Viewed Tools
TOTP Code Generator — 2FA Testing Tool
Generate time-based one-time passwords from a TOTP secret key. Enter your base32 secret, choose a period and digit length, and get the current and next codes with a live countdown timer. Useful for testing and debugging 2FA integrations.
Use Tool →JSON to Zod — Schema Generator
Generate Zod validation schema code from a JSON sample object. Infers z.string(), z.number(), z.boolean(), z.array(), z.object(), and z.null() types automatically. Handles nested objects, arrays of objects with optional field detection, and outputs copy-ready TypeScript with import and z.infer type alias.
Use Tool →JSONL Formatter — Line-by-Line Validator
Format, validate, and inspect JSON Lines (JSONL) and NDJSON files. Validates each line individually, reports parse errors by line number, outputs compact JSONL or a pretty-print preview, and lets you download the cleaned file.
Use Tool →Screen Size Converter — Diagonal Dimension Tool
Calculate screen width and height from diagonal size and aspect ratio. Convert between inches and centimeters for displays, TVs, and monitors with instant dimension calculations.
Use Tool →Password Entropy Calculator — Crack Time Estimator
Calculate the information-theoretic bit entropy of any password or API key. Detects character set pools automatically, shows the total number of possible combinations, and estimates crack time across five attack scenarios from rate-limited web logins to GPU cracking clusters.
Use Tool →TLS Cipher Suite Checker — Strength Analyzer
Check TLS protocol version compatibility and cipher suite strength ratings against current best practices. Supports IANA and OpenSSL cipher names — rates each suite as Strong, Weak, or Deprecated and explains why.
Use Tool →Secret Scanner — API Key & Credential Detector
Scan pasted text, code, or config files for accidentally exposed API keys, tokens, passwords, and private keys. Detects 50+ secret types across AWS, GitHub, Stripe, OpenAI, and more — all client-side, nothing leaves your browser.
Use Tool →TOML Config Validator — Syntax Error Finder
Validate TOML configuration file syntax and report errors with line numbers. Paste any TOML content — Cargo.toml, pyproject.toml, config.toml — and instantly see a green checkmark with key counts and structure stats, or a precise error message pointing to the exact line. Includes a collapsible JSON structure preview to confirm what was parsed.
Use Tool →Related SaaS Integration & Backend Tools
MRR Calculator — Monthly Recurring Revenue Tool
Calculate Monthly Recurring Revenue from subscription plan tiers and customer counts. Get total MRR, ARR, ARPU, and a visual tier breakdown showing each plan's contribution.
Use Tool →API Cost Estimator — Forecast Monthly Usage & Tiers
Estimate monthly API costs from request volume and per-request or per-token pricing tiers. Enter your monthly request volume, configure up to 3 pricing tiers, and see total cost, cost per 1K requests, cost per user, and the number of users needed to break even.
Use Tool →Revenue Growth Rate Calculator — CAGR Tool
Calculate MoM, CAGR, and period-over-period revenue growth rates from a series of revenue figures. Get a visual growth rate chart, summary metrics, and a 3/6/12/24-month forward projection at your average or custom growth rate.
Use Tool →NPS Score Calculator — Net Promoter Score
Calculate your Net Promoter Score from promoter, passive, and detractor survey response counts. Get your NPS score (-100 to +100), category rating, and side-by-side benchmark comparison against 10 industries.
Use Tool →API Request Builder — In-Browser HTTP Client
Build and send HTTP API requests directly from your browser. Set method, URL, query params, headers, and body (JSON, raw, or form-encoded). View the response status, headers, and body — and copy an equivalent cURL command for terminal use. Free, browser-based, no proxy.
Use Tool →JSON Diff Tool — Object Comparison Highlighter
Compare two JSON objects and highlight differences. Perfect for debugging API changes and data transformations.
Use Tool →Churn Rate Calculator — Revenue Churn Tracker
Calculate customer and revenue churn rates for monthly, quarterly, or annual periods. Get annualized churn rates, retention metrics, and a 12-month projection showing how churn compounds over time.
Use Tool →SaaS Rule of 40 Calculator — Growth Health Scorer
Calculate your Rule of 40 score by adding YoY revenue growth rate and EBITDA margin. See your tier (Elite / Healthy / Below Average), a visual gauge with the 40-point threshold, benchmark comparison against public SaaS companies, and a what-if table showing what growth or margin improvement is needed to reach 40, 50, or 60.
Use Tool →Share Your Feedback
Help us improve this tool by sharing your experience