API Testing Tool

Developer Tools · React + Node (Express) · 19 @molecule/* packages

Postman-like API testing with requests, collections, environments, and history — with built-in Stripe-backed subscription tiers

Try it

Opens instantly. Runs on sample data, so changes reset on reload.

collections — id, user_id, name, description, sort_order, created_at, updated_at
devices — id, createdAt, updatedAt, userId, name, pushPlatform, pushSubscription, hasPushSubscription
environments — id, user_id, name, variables, is_active, created_at, updated_at
history — id, user_id, request_id, method, url, status_code, response_headers, response_body, …
mocks — id, user_id, name, path_pattern, method, response_status, response_headers, response_body, …
monitors — id, user_id, test_id, name, cron_schedule, is_active, last_run_at, last_status, …
payments — id, createdAt, updatedAt, userId, transactionId, productId, platformKey, data, …
requests — id, user_id, collection_id, name, method, url, headers, query_params, …
resource_tags — id, tagId, resourceType, resourceId, createdAt
tags — id, name, slug, color, description, createdAt, updatedAt
tests — id, user_id, request_id, name, assertions, last_run_at, last_status, created_at, …

free / pro / team — gated by: maxCollections, maxEnvironments, maxHistory, maxRequests, advancedFeatures, canExport, retentionDays

The @molecule/* packages are Apache-2.0. The app you build from this template is yours to export and self-host. Licensing