What Beeceptor Can’t Test, Keploy Cancatch what breaks
Auto-Generated Tests from Traffic vs Hosted No-Code API Mocking
Keploy uses eBPF to capture real production traffic and auto-generate regression tests plus dependency mocks with zero code changes, running locally or in CI. Beeceptor is a hosted, no-code SaaS for creating mock REST endpoints, inspecting HTTP traffic, and testing webhooks directly from the browser. Keploy suits teams wanting self-hosted automated regression coverage; Beeceptor suits developers who want an instant public mock endpoint with request inspection and no setup.
eBPF · zero code changesHow Keploy turns real traffic into a test suite
One pipeline, running the moment your app receives a request. No SDKs, no sidecars, no test scripts — just kernel-level capture that becomes deterministic regression coverage.
- 01Real API trafficLive requests + responses from your running app
- 02eBPF captureKernel-level recording — zero code changes
- 03NormalizeTime-freeze + field noise removed automatically
- 04Generate testsDeterministic test cases from actual behavior
- 05Generate mocksEvery downstream dependency stubbed for you
- 06Replay in CIRuns locally, in CI, or in-cluster on Kubernetes
- 07Regression detectionDiffs flagged before they reach production
See how the capture-replay engine works under the hood.
Trusted by engineering teams at scale
Why teams switch from Beeceptor
Keploy eliminates manual test authoring by generating tests automatically from real traffic — no scripts, no stubs, no infrastructure setup.
Want to auto-generate regression tests, not just a hosted mock endpoint
Need a self-hosted, open-source tool where traffic stays in your infrastructure
Need mocks derived from real captured traffic rather than hand-authored rules
The numbers behind the switch
Industry data on how much manual testing costs teams — and what Keploy delivers from the first recording session.
Writing tests, configuring mocks, debugging flakiness — not building features that ship.
A routine rename or interface change silently invalidates more than half your suite.
Keploy generates tests from every request your API actually handles — no guessing.
Traffic capture reaches edge cases, error paths, and concurrent requests no dev would write.
Pain stats sourced from developer productivity surveys. Coverage stats from Keploy production recording sessions across 50+ engineering teams.
Every number here comes from teams running Keploy in CI.
Zero code. Real tests. Automatically.
Keploy's eBPF agent intercepts every API call at the kernel level and turns live traffic into test cases with dependency mocks — no SDK, no sidecars, no annotations.
Incoming API Requests
Keploy Agentrecording · analyzing · generatingEvery API call your app makes gets captured, replayed as a test, and its dependencies auto-mocked — continuously, from real traffic.
How they compare, dimension by dimension
A logical breakdown across the dimensions that matter. Click any row for real-world KPI impact across industries.
Auto-generates full regression tests from captured traffic
No test-case generation — provides mock responses and inspection
Self-hosted — runs locally, in CI, or on Kubernetes
Hosted SaaS with public endpoints; on-prem only for Enterprise
Zero code changes to instrument or capture
No code, but mock rules are configured by hand in the browser
Auto-generates mocks for all downstream dependencies
Manually defined mock endpoints and response rules
Captures traffic to generate tests, not for live debugging
Real-time inspection of HTTP headers and payloads in the UI
Built-in time-freezing and field normalization
Dynamic and conditional response templating
KeployClick any dimension to see real-world KPI impact across industries.
Dive into how each capability actually works.
Your tests miss more than you think
Manual tests cover paths developers remember to write — usually just the happy path. Keploy captures every pattern production traffic actually generates.
Coverage grid shows 8 common endpoints × 10 production scenario types. Manual tests cover only what developers remember to write. Keploy captures every pattern your API actually serves in production.
Keploy is open source — read the code that captures this coverage.
The infrastructure you're maintaining
Traditional testing stacks require a shadow infrastructure to exist alongside your real app. Keploy eliminates all of it — tests and mocks come from actual traffic, not from services you run and maintain.
How they work differently
Architectural differences that affect workflow, cost, and velocity.
KeployeBPF-basedKeploy uses eBPF to record real API calls and responses from your running application, then replays them as regression tests. It auto-generates mocks for downstream dependencies and handles non-deterministic fields like timestamps through time-freezing. Everything runs in your own environment — locally, in CI, or on Kubernetes — with no traffic leaving your infrastructure.
Beeceptor provides hosted mock endpoints you create in the browser with no code. You define response rules by matching request path or body, inspect all incoming HTTP traffic including headers and payloads in real time, test webhooks, and use local tunneling to expose localhost to a public URL. It is a cloud SaaS with a free tier and usage-based paid plans; there is no open-source or self-hosted core.
When to use each tool
Specific scenarios where each tool delivers the most value.
Keploy is the better fit when…
- Want to auto-generate regression tests, not just a hosted mock endpoint
- Need a self-hosted, open-source tool where traffic stays in your infrastructure
- Need mocks derived from real captured traffic rather than hand-authored rules
- Need automatic handling of non-deterministic fields like timestamps and UUIDs
- Want dependency mocking for databases and services beyond public HTTP endpoints
Beeceptor is the better fit when…
- Need an instant public mock endpoint with zero setup or install
- Want to inspect and debug live HTTP traffic, headers, and payloads in the browser
- Need to test incoming webhooks from a third-party service quickly
- Want local tunneling to expose a localhost service to a public URL
- Prefer a no-code, usage-based SaaS with no per-user charges
Compare the full workflow for your own stack.
The workflow you're escaping
Same starting point, same finish line. One path is short because Keploy does the tedious middle for you — the other is where teams lose days every sprint.
Without Keploy (Beeceptor / manual)
Every dependency is your problem, and every code change ripples back through the test suite you hand-built.
With Keploy
Record once from real traffic, replay anywhere. Tests and mocks are generated and stay in sync automatically.
Cut the maintenance middle out of your test suite.
The test maintenance trap
With Beeceptor, every feature commit generates a hidden tax — a follow-up "fix tests" commit. The commit history tells the whole story.
Deterministic replays, no flaky tests — see how.
Switch from Beeceptor in minutes
Choose the path that fits your workflow. Both are up and running the same day.
Install, record real API traffic, then replay it as regression tests — zero code changes, zero framework dependencies.
# 1. Installcurl --silent -O https://keploy.io/install.sh && source install.sh# 2. Record your traffickeploy record -c "your-start-command"# 3. Replay as testskeploy test -c "your-start-command" --delay 10Paste your cURLs, drop in an OpenAPI spec or Postman collection, and click Generate. Keploy builds your test suite in seconds.
Real-world scenarios
How Keploy handles the challenges your team actually faces.
You need to inspect and debug webhooks from a third-party provider
Keploy captures traffic to generate tests and mocks rather than acting as a live inspection endpoint, so it is not the natural tool for eyeballing incoming webhooks in real time.
Beeceptor is purpose-built for this — create an endpoint in seconds, point the third-party webhook at it, and inspect every incoming request's headers and body live in the browser.
You need self-hosted regression testing where data stays internal
Keploy runs entirely in your own environment, capturing traffic and generating tests and mocks without any data leaving your infrastructure — a fit for teams with data-residency requirements.
Beeceptor is a hosted SaaS, so mock traffic passes through its cloud. Self-hosting is only available on the Enterprise tier, which may not suit teams needing everything on-prem by default.
Join the teams shipping with confidence on Keploy.
What you write vs what Keploy writes
The same test coverage — one approach takes hours of setup and ongoing maintenance, the other takes five minutes and zero boilerplate.
Every new endpoint needs a new file. Every refactor breaks tests. Every non-deterministic value (timestamps, IDs) needs custom handling.
Keploy captures the real request, response, and all dependency calls. Non-deterministic fields are auto-detected and excluded from assertions.
Frequently asked questions
Common questions about choosing between Keploy and Beeceptor.
Still have questions? The docs and community can help.
Looking for a Beeceptor alternative?
Engineering teams evaluating Beeceptor alternatives often compare it with Keploy for API testing and regression coverage. Keploy captures real production traffic via eBPF and auto-generates tests with dependency mocks — requiring zero code changes. The key differences come down to how tests are generated (traffic-based vs manual), how dependencies are mocked (automatic vs configured), and what infrastructure changes are needed (none vs SDK/sidecar/containers).
Ready to stop writing tests manually?
Keploy captures your real API traffic and turns it into a regression suite automatically. Zero code changes. Full coverage from day one.