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
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 →DPI Calculator — Print Resolution Tool
Calculate DPI (dots per inch), image dimensions, and print sizes. Convert between pixels and physical dimensions for printing and displays.
Use Tool →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 →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 →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 →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 →Related SaaS Integration & Backend Tools
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 →Support Ticket Cost Calculator — Audit Customer Support Unit Economics
Calculate per-ticket support cost from team size/salary/volume to identify support scaling efficiency
Use Tool →Pricing Elasticity Estimator — Model Demand Sensitivity and Revenue Curves
Model demand sensitivity to price changes and estimate revenue impact of pricing adjustments
Use Tool →Customer LTV Calculator — Lifetime Value Tool
Calculate Customer Lifetime Value from ARPU, monthly churn rate, and gross margin. Get gross and net LTV, LTV:CAC ratio with benchmark rating, and a churn sensitivity table showing how LTV changes across different churn rates.
Use Tool →Seat License Calculator — SaaS Per-User Pricing & Volume Tool
Calculate per-seat SaaS pricing with configurable volume discount tiers and annual billing discounts. Enter your base price per seat, team size, and discount tiers to see price per seat, total MRR/ARR, and the savings from volume and annual billing.
Use Tool →Expansion MRR Calculator — Measure Upsell Velocity and Net Negative Churn
Track upsells and add-ons to calculate net expansion MRR rate and its impact on overall growth
Use Tool →ARR Calculator — Annual Recurring Revenue Tool
Calculate Annual Recurring Revenue, YoY growth rate, and net new ARR. Enter current and previous ARR (or MRR) with optional movement breakdown to get NRR and a visual ARR bridge.
Use Tool →Annual Contract Value (ACV) Calculator — Normalize and Audit SaaS Subscription Revenue
Calculate Annual Contract Value from deal size and term length, and compare multiple deal structures side by side with per-seat and monthly normalized revenue.
Use Tool →Share Your Feedback
Help us improve this tool by sharing your experience