OpenAPI Studio
OpenAPI Studio is a visual editor for designing, testing, and publishing AI-ready APIs.
What OpenAPI Studio is
OpenAPI Studio is a visual editor for designing, testing, and publishing AI-ready APIs. Its flow builder displays API paths as a node graph and offers four layout algorithms. A server-side proxy executes requests, avoiding browser CORS limitations, while recipes can chain up to 10 API calls, map responses with JSONPath, and apply assertions at each step. Workspaces include a six-tool MCP server for searching, retrieving, creating, updating, running, and analyzing. Native integrations include GitHub, Slack, Linear, Notion, and MCP connections for AI assistants; supported integrations use OAuth and encrypted workspace token storage. It supports OpenAPI, AsyncAPI, contract validation, Git synchronization, and team collaboration. WebSocket endpoints can be modeled and tested, then exported as AsyncAPI 3.0 YAML. Plans range from Free to Scale: Pro is $9 a month, Team is $29 a month, and Scale is $99 a month. Self-hosted and web options are available.
Good
- Visual node-graph flow builder has four layout algorithms.
- Recipes chain up to 10 API calls.
- Server-side proxy avoids browser CORS limitations.
- Supports OpenAPI, AsyncAPI, and contract validation.
- Workspaces include a six-tool MCP server.
Watch out
- Free plan limits use to one workspace and three members.
- Free execution history lasts seven days.
- SSO, SCIM, and audit logs are not offered.
- Pro plan does not include GitHub or integrations.
Who it suits
It suits developers and teams designing, testing, and publishing APIs, including those who want visual flow building or MCP tooling. Self-hosting is available, and plan limits vary by workspace, member, history, integration, and MCP allowances.
Verdict
OpenAPI Studio combines API design and execution tools with workspace collaboration and MCP support. Check plan limits and the absence of SSO, SCIM, and audit logs against your requirements.
Plans and prices
From OpenAPI Studio's own pricing page, checked 1 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | 1 workspace · 3 members · 7-day execution history · public hotlinks · 1 MCP token/spec · 500 MCP requests/day · no GitHub or integrations · forever |
| Pro | $9 a month | 3 workspaces · 3 members · 30-day execution history · private hotlinks · credential vault · 3 MCP tokens/spec · 2,000 MCP requests/day · no GitHub or integrations · monthly |
| Team | $29 a month | Unlimited workspaces · unlimited members · 30-day execution history · private hotlinks · 5 MCP tokens/spec · 5,000 MCP requests/day · 3 integrations · 3 GitHub organizations · monthly |
| Scale | $99 a month | Unlimited workspaces · unlimited members · 90-day execution history · private hotlinks · 20 MCP tokens/spec · unlimited MCP requests/day · unlimited integrations · unlimited GitHub organizations · monthly |
The facts
Each one read from OpenAPI Studio's own pages, with the date it was checked.
What it does
- Access control
- Workspaces provide Owner, Editor, and Viewer roles with enforced role-based permissions.checked 1 Oct 2026
- Data hosting
- Cloud data is stored on Cloudflare D1, KV, and R2, while self-hosted deployments use the customer's Cloudflare account.checked 1 Oct 2026
- Data privacy
- The service says it does not sell data, use client-side analytics, or use tracking pixels, and allows export or deletion of data.checked 1 Oct 2026
- Endpoint execution
- A server-side proxy runs API requests and avoids browser CORS limitations.checked 1 Oct 2026
- Flow builder
- The visual flow builder represents API paths as a node graph and supports four layout algorithms.checked 1 Oct 2026
- Integrations
- Native integrations include GitHub, Slack, Linear, Notion, and MCP connections for AI assistants.checked 1 Oct 2026
- Integration security
- Supported integrations use OAuth and store tokens encrypted in the workspace; raw API keys are not requested.checked 1 Oct 2026
- MCP server
- Each workspace includes a six-tool MCP server with search, get, create, update, run, and analyze tools.checked 1 Oct 2026
- Purpose
- OpenAPI Studio is a visual editor for designing, testing, and publishing AI-ready APIs.checked 1 Oct 2026
- Recipes
- Recipes chain up to 10 API calls, map responses with JSONPath, and apply per-step assertions.checked 1 Oct 2026
- Security limitations
- SSO, SCIM, and audit logs are not yet offered.checked 1 Oct 2026
- Support
- Community support is provided through GitHub Issues on all tiers, while priority email support is available on Pro, Team, and Scale.checked 1 Oct 2026
- WebSocket support
- WebSocket endpoints can be modeled and tested alongside HTTP and exported as AsyncAPI 3.0 YAML.checked 1 Oct 2026
The company
- Maker
- OpenAPI Studio is described as a solo developer project built in the open with a public codebase and transparent roadmap.checked 1 Oct 2026
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