# Stoplight Alternative — Routebase > Stoplight made design-first mainstream with Studio, Prism, and Spectral. Routebase picks up where it stops, so the same spec also runs your tests, monitors your endpoints, and serves your agents, with data residency you choose. Canonical page: https://routebase.dev/stoplight-alternative/ ## Why teams move on from Stoplight Stoplight earned its place, because Studio shaped how teams design OpenAPI, and Prism and Spectral are open-source staples. Most teams land on this page for one of three reasons. The design work is done and the spec still has to be tested and watched somewhere else, or the docs feature they need sits two price tiers up. Or the 2023 SmartBear acquisition has them wondering where the product is headed, because the portfolio is being consolidated into SmartBear's separate Swagger platform, where automated testing lives as separately priced modules. Here is what Routebase adds, with the full row-by-row comparison further down. - Design-first workflow like Studio — plus what comes after design - Real-time editing and merge-request reviews in the same project - One platform instead of design here, tests and monitoring elsewhere - Prism and Spectral are good tools — keep them if they serve you. This page is about what comes after the spec is designed ## The lifecycle doesn't end at the docs page Stoplight documents a Try It console, Prism mocks, and Spectral linting, but no automated test runner, and SmartBear sells contract and functional testing as modules of its separate Swagger platform. Routebase runs it all from the same spec, with executable test suites against real environments, scheduled runs, and endpoint monitoring with alerts. - Test suites with assertions, auth schemes, and CI runs - Uptime and check monitoring with alert policies - Hosted spec-driven mocks with failure simulation ## Real-time editing and reviews, together In Stoplight you choose, because web projects get real-time collaboration but no review Proposals, and Git projects get Proposals but work commit-and-push. In Routebase the same project has both, so you see who's editing which endpoint live, and you ship changes through spec branches and merge requests with review. - Live presence: see teammates' edits as they happen, down to the field - Spec branches and merge requests with approval flow - Breaking-change detection before anything merges ## Governance built in, not bolted on What Spectral does with custom rulesets, Routebase ships as a first-class workflow, with style-guide rules with auto-fix suggestions, breaking-change detection across versions, and merge requests with review. - 53+ style guide rules with auto-fix suggestions - 21 breaking-change rules across spec versions - Spec branches, merge requests, and review flow ## Mocks that rehearse the bad day, not just the happy path Prism serves examples from the spec, so the response you documented is returned faithfully. That covers the case where everything works. The failures your frontend has to survive, and the flows that only make sense with state, need more than a faithful example. Routebase mocks carry both, with realistic synthetic data, session state, and deliberate failure. - Realistic generated data — names, emails, addresses — not the same placeholder on every call - Stateful mocks that persist across a session, plus request variables like {{request.body.name}} - Fixed or random latency, 5xx responses, timeouts, connection resets, per-rule rate limiting - Proxy mode: mock the new endpoint, forward everything else to the real API ## Docs without the price ladder On Stoplight's pricing page, docs versioning and custom domains start at $113 per month, and removing Stoplight branding requires the $362 Pro Team tier. In Routebase, the branded portal with custom domain and auto-SSL is part of Pro at $19 per user, and the free plan already includes two projects. - Custom domain with auto-SSL on Pro ($19/user/mo) - Versioned docs published from spec versions - Free plan includes 2 projects (Stoplight's free plan: 1) ## Data residency as a signup choice Pick EU or US when you create your workspace, on every plan, on Microsoft Azure. Stoplight publishes no data-residency options. For teams with European customers that is not a cosmetic difference, because Routebase is built by a German company, so GDPR compliance and a DPA come without an enterprise negotiation. - EU or US region on every plan, chosen at signup - Same features in both regions - GDPR and DPA from a German vendor — no sales call ## Built for the agent era Every Routebase workspace ships a built-in MCP server that covers the full feature set. Claude, Cursor, and other agents work your real spec, so they design endpoints, run the linter, and execute suites through the same interface your team uses, under the same role-based permissions. - MCP server included on every plan, not an add-on - Agents operate under your workspace's RBAC — an agent can do what its key allows, nothing more - Design a whole spec and its test suites by prompt - llms.txt output for your published docs ## The specs move in an afternoon, and an agent does the rest Moving the specs is the easy half, because Stoplight works on standard OpenAPI, so does Routebase, and an import is an import. The half that usually stalls a migration is everything the spec does not carry, meaning the test suites, the mock rules, and the monitors. None of that involves a hard decision, only a lot of well-defined work, and every piece of it is a tool call on our MCP server. Point an agent at an imported spec and it builds them. - OpenAPI 3.0 and 3.1 import, YAML or JSON — Studio projects are standard OpenAPI underneath - Governance rules apply from the first import, with auto-fix suggestions on what they flag - An agent generates test suites from the endpoints, runs them, and fixes what fails - Mock rules and monitors generated from the same spec, not rebuilt by hand - Everything the agent does runs under your roles and lands as a diff you review - Full OpenAPI export anytime — no lock-in ## The full comparison, row by row | Capability | Routebase | Stoplight | |------------|-----------|---------------| | Spec-first API design | Yes — Visual OpenAPI editor with spec branches and merge requests, 53+ style guide rules and 21 breaking-change checks before publish | Yes — Studio's form-based visual editor with code view — the design-first pioneer | | Real-time collaboration with review | Yes — Live presence and instant updates, combined with spec branches and merge requests | Partial — Real-time only on Stoplight-hosted web projects; reviews (Proposals) require Git projects, which are commit-and-push | | Docs portal with custom domain | Yes — Branded portal generated from the spec: WYSIWYG editor, reusable snippets, page revisions, versioned pages, try-it and search; custom domain on Pro | Yes — Hosted docs; versioning and custom domains from Startup ($113/mo), branding removal from Pro Team ($362/mo) | | Hosted mock servers | Yes — Spec-driven mock servers with realistic generated data, stateful flows, latency and failure simulation, and proxy mode | Yes — Instant Prism-based mock servers | | API test execution | Yes — Declarative test engine — 6 assertion types, 10 operators, 10 auth schemes, multi-step scenarios with chaining, fixtures and snapshots; no scripting required | No — No test runner documented; automated testing is a separately priced module of SmartBear's Swagger platform | | API monitoring | Yes — Uptime and contract checks generated from the spec, with alert policies, incidents and maintenance windows, from Pro | No — No uptime or endpoint monitoring listed on any plan | | API security scanning | Yes — Active OWASP API Top 10 scanning against a running environment — 8 scanners, auth personas for access-control tests, findings with severity, remediation guidance and a security score | Partial — OWASP Top 10 2023 Spectral style guide, enabled per workspace — rules run against the OpenAPI definition | | MCP server for AI agents | Yes — Built-in MCP server covering the full feature set, plus 13 prompts and 12 resources; zero-install OAuth connector, RBAC-scoped on every plan | No — No MCP server documented | | Data residency choice | Yes — EU or US region chosen at signup, on every plan — German vendor, Azure-hosted | No — No data-residency options published | | Pricing model | Yes — Per user: free plan, then $9–$39/user/mo (annual) — every feature of a tier included | Partial — Free limited to 1 project; team tiers $44–$362/mo plus per-user fees | *Comparison as of July 2026, based on the vendor's public pricing and documentation pages. All third-party names and marks belong to their respective owners; Routebase is not affiliated with or endorsed by them. Spotted something outdated? Email us and we'll correct it.* ## Frequently asked questions ### Can I import my Stoplight projects? Stoplight projects are standard OpenAPI under the hood, so you export your specs and import them into Routebase as 3.0/3.1 YAML or JSON. Your design-first workflow carries over. ### What about Prism and Spectral? Both are open-source tools, and you can keep using them. Routebase covers the same ground without extra moving parts, with hosted spec-driven mock servers, and 53+ built-in lint rules plus breaking-change checks with auto-fix suggestions. ### What happens to our Spectral rulesets? They do not import as files, because Routebase governance is not Spectral under the hood. What they encode, though, has a destination. The rules you wrote as a ruleset become style-guide rules in the workspace. There, 53+ built-in rules already cover the common ground of naming, completeness, best practice, security, and structure, and custom rules cover the rest. The difference in daily use is that a flagged rule comes with an auto-fix suggestion and blocks a merge request, instead of failing a CLI step someone has to interpret. If you would rather keep Spectral in CI alongside, nothing stops you. ### Can we hand the migration to an agent? Yes, and that is the part worth handing over. The spec import itself takes minutes, because both tools speak standard OpenAPI. What takes time is building the test suites, mock rules, and monitors that Stoplight never had, and that work is mechanical. It reads an endpoint, writes the assertions it implies, runs them, and fixes what fails. Connect Claude, Cursor, or your agent of choice to the workspace MCP server and point it at an imported spec. It runs that loop under your permissions, leaving you a diff to review rather than a quarter of typing. [How the agent-driven migration works](https://routebase.dev/blog/migrating-from-postman-to-openapi-first/) ### Does Routebase run tests, not just lint specs? Yes, and that is a core difference. Routebase executes test suites against real environments, with assertions, auth schemes, fixtures, scheduled runs, and CI/CLI integration. Linting is the starting point, not the end. ### Can several people design the same API at once? Yes. Routebase shows live presence, so you see who is editing which endpoint, down to the field, and it broadcasts changes to everyone instantly. Structured work still goes through spec branches and merge requests in the same project, so you don't have to choose between real-time editing and a review workflow. ### Where is my data hosted? You choose EU or US data residency at signup, and both regions run on Microsoft Azure. Routebase is a German company, so GDPR compliance and a DPA come without an enterprise negotiation. ### What does Routebase cost? Pricing is per user, with a free plan, then $9–$39 per user/month billed annually, and every feature of a tier included, with Enterprise self-service from 25 seats. Every account starts with a 14-day Pro trial, no credit card required. --- [Routebase](https://routebase.dev/) — [Sign up](https://app.routebase.dev/): Every account starts with a 14-day Pro trial — no credit card required.