Keploy Alternative
Looking for a Keploy alternative?
Keploy's 'digital twin' approach captures real production traffic and replays it as tests — great once traffic exists. If you need coverage before launch, multi-protocol support beyond HTTP, or an AI story your security team can actually approve, here's what to look for in an alternative.
Why teams look for a Keploy alternative
No traffic, no tests yet
Traffic-capture tools need real production or staging traffic before they can generate anything. New APIs and pre-launch services have nothing to capture.
Coverage depends on what got captured
Test fidelity is only as good as the diversity of traffic observed. Rare edge cases and error paths that never occurred in traffic never become tests.
Cloud AI generation raises policy questions
Sending specs or traffic to a third-party cloud AI service is a hard blocker for regulated teams that need generation to happen on infrastructure they control.
SOAP and GraphQL are second-class
Traffic-capture tools are built around HTTP API traffic. Teams with SOAP/WSDL or GraphQL services need documented, first-class support, not a workaround.
No coverage-gap visibility
Without a spec to compare against, it is hard to answer which endpoints, methods, or status codes are still untested.
Governance features aren't published
SSO, RBAC, and audit logging aren't documented for the traffic-capture approach, which matters once IT security starts asking questions.
Where a traffic-first approach falls short
Capturing and replaying production traffic is a legitimate way to build regression tests — but it's not the only approach, and it has real limits worth weighing before you commit to it.
How Total Shift Left works as a Keploy alternative
Import your spec
Upload your OpenAPI, Swagger, or WSDL spec (or an existing Postman collection). The platform auto-discovers every endpoint and schema — no traffic required.
AI generates your test suite
Schema-aware AI creates tests for happy paths, edge cases, error scenarios, and security checks, optionally running on your own self-hosted LLM (Ollama, vLLM, LM Studio).
Run in CI/CD or locally
Execute tests via native Jenkins and Azure DevOps plugins, or the REST API for GitHub Actions, GitLab, CircleCI, and Bitbucket. Run locally for development and private APIs.
Track coverage and contracts
See which endpoints are tested, which aren't, and whether responses match your API contract — before there's any traffic to capture.
< 5 min
From spec import to first test suite
Day 0
Coverage before traffic exists
3 protocols
REST, SOAP/WSDL, GraphQL
Self-hosted
Ollama, vLLM, LM Studio LLM options
Total Shift Left vs Keploy: feature comparison
| Feature | Total Shift Left | Keploy |
|---|---|---|
| Test creation approach | AI-generated from OpenAPI/WSDL specs — no code, no traffic capture required | Production traffic capture & replay ('digital twins'); OpenAPI/Postman import also available via the free Playground |
| Core method | Contract-first: tests generated from your API spec before code ships | Traffic-first: records real production/staging traffic and replays it as tests |
| Self-hosted LLM support | Ollama, vLLM, LM Studio — run generation on your own infrastructure, nothing leaves your network | Cloud-hosted AI generation; no self-hosted-LLM option found |
| Protocol support | REST, SOAP/WSDL, GraphQL with spec-driven automation | Primarily HTTP API traffic capture; SOAP/GraphQL breadth not documented |
| Coverage tracking | Endpoint, method, status code, parameter coverage with gap identification | No published coverage-gap tracking |
| Contract testing | Built-in schema validation against OpenAPI/WSDL; fail builds on drift | Not spec-driven — fidelity depends on the diversity of captured traffic |
| Developer tooling | Native CI/CD plugins for Jenkins and Azure DevOps, plus a REST API for GitHub Actions, GitLab, CircleCI, and Bitbucket | VS Code extension (1,185,821 installs, 5.0★); GitHub Marketplace app that comments AI-generated unit tests on PRs |
| Licensing / project maturity | Commercial platform with a forever-free tier | Open source (Apache-2.0), 18.4k GitHub stars, 2.3k forks |
| Enterprise governance (SSO, RBAC, audit log) | SSO, role-based access control, audit logs, and multi-tenant workspaces on Enterprise | Not published |
| Pricing model | Forever-free Citizen Developer Edition + 15-day Enterprise trial; transparent custom pricing | Free OSS core + free Playground; Pro tier $19/user/month plus usage-based pricing ($0.16 per test generated, $0.22 per test run); custom Enterprise |
When Keploy is still the better choice
- -You already have rich production traffic you want to turn into tests via capture/replay
- -You want a free, actively-starred (18.4k) open-source core you self-host
- -You want an AI bot that comments generated unit tests directly on GitHub pull requests
- -You're comfortable with cloud-hosted AI generation and don't need a self-hosted LLM
Frequently asked questions
What is the best alternative to Keploy?
It depends on why you're looking. If you need test coverage before there's production traffic to capture, if your APIs span SOAP or GraphQL and not just REST, or if your organization can't send specs or traffic to a third-party cloud AI service, Total Shift Left is built for exactly that: spec-driven generation with a self-hosted LLM option.Why would I switch from Keploy?
Keploy's core method — traffic capture and replay — depends on traffic already existing, which is a blocker for new or pre-launch APIs. Total Shift Left generates tests directly from your OpenAPI, Swagger, or WSDL contract, so coverage exists from day one.Does Total Shift Left support self-hosted or on-premise AI generation, unlike Keploy?
Yes. We found no evidence of a self-hosted-LLM option for Keploy's AI generation — it appears cloud-hosted. Total Shift Left runs generation against Ollama, vLLM, or LM Studio on your own infrastructure, which matters for regulated enterprises that can't send specs or traffic to a third-party cloud service.Is Total Shift Left free like Keploy's open-source core?
Yes. The Citizen Developer Edition is forever-free for single users — full authoring with AI test and mock generation, 50 endpoints, 50 mocks, 50 workflows, no expiry, no credit card. There's also a 15-day Enterprise trial that mirrors the full platform.Can I import an existing Keploy or Postman setup?
Yes. Import the OpenAPI/Swagger spec your APIs are built from, or an existing Postman collection. The platform generates a comprehensive test suite from the spec directly — no traffic capture required.Does this alternative support SOAP and GraphQL, not just REST?
Yes. Total Shift Left tests REST, SOAP/WSDL, and GraphQL from the same spec-driven workflow. Keploy's documented strength is HTTP API traffic capture; SOAP/GraphQL breadth isn't documented for it.
Generate your first API test suite in minutes
Import your OpenAPI spec. Get CI-ready tests. Track coverage. No code, no credit card, 15-day free trial.