Fetch Sandbox
FetchSandbox gives developers and AI coding agents runnable, stateful sandboxes for real APIs so they can build and test integrations inside the IDE without burning real API quota, waiting on staging, or risking production.
AI Tools by Fetch Sandbox
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Fetch Sandbox
Stripe Webhook Testing Sandbox
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A sandbox platform that provides stateful mocks of 60+ real APIs (Stripe, GitHub, Clerk, Twilio, Resend, OpenAI, Asana, Notion, Paddle, Shopify, and more) generated from OpenAPI specs. It simulates webhooks, retries, failure states, and async workflows, and connects to IDEs and coding agents (Cursor, Claude Code, VS Code, Windsurf, Cline, Codex) via a CLI and an MCP server.
Leadership
Founders
Raj Nagulapalle
Maker of FetchSandbox who spent years at PayPal and other SaaS companies wiring up API integrations, an experience that informed the product.
Founding Story
FetchSandbox was created to solve a recurring pain the founder hit while wiring up API integrations at PayPal and other SaaS companies: integrations that pass basic HTTP tests still fail in the real world on webhooks, retries, state changes, async workflows, and failure scenarios. The product provides stateful API sandboxes generated from OpenAPI specs, connected to coding agents via the Model Context Protocol, so AI-written integrations can be verified end-to-end before hitting production. It was publicly launched on Product Hunt on July 12, 2026.
Business Model
Revenue Model
Freemium SaaS with a free tier, a paid monthly subscription, and custom enterprise pricing.
Pricing Tiers
1,000 runs / month, access to 50+ APIs, CLI and MCP support, OpenAPI imports, community support.
10,000 runs / month with overage billing at $5 per additional 10,000 runs, private integrations, webhook replay and run history, Slack/email support.
Unlimited runs, private API onboarding, SSO/SAML with team access, audit logs and private storage, SLA and priority support, and VPC/on-premises deployment options.
Target Markets
- Testing AI-generated API integrations without leaving the IDE
- Verifying webhook, retry, and failure-state handling before production
- Building API integrations against realistic sandboxes without consuming real API quota
- Validating async workflows and state changes end-to-end