FetchSandbox.

FetchSandbox

FetchSandbox is a memory graph and sandbox environment that enables developers and AI agents to build, test, and verify API integrations without consuming real API calls or leaving their IDE. It bridges the gap between mock testing and production by simulating complete API workflows—including webhooks, authentication, retries, and async events—so you can ship integrations that actually work in production, not just in theory.

Product Highlights

• Pre-Configured API Library: Instant access to 60+ ready-to-use integrations including Stripe, GitHub, OpenAI, Paddle, and Twilio—no setup required.
• IDE-Native Workflow: Seamlessly integrates with Cursor, VS Code, Claude Code, Windsurf, Codex CLI, and other AI coding assistants for frictionless development.
• End-to-End Verification: Validates webhook delivery, workflow state, contracts, and real integration behavior—not just HTTP 200 responses.
• Production-Grade Simulation: Tests edge cases, failure states, retries, and async events in realistic environments before deployment.

Use Cases

• AI-Assisted Integration Development: Enable AI agents to write and test API integrations autonomously within your IDE, with verified success criteria preventing broken code from reaching production.
• Webhook & Async Workflow Testing: Simulate complete event-driven pipelines including webhook delivery, state transitions, and error recovery—without external dependencies.
• Safe API Experimentation: Prototype and validate integrations against real API behaviors without rate limits, usage costs, or production risk.

Target Audience

FetchSandbox serves software developers, platform engineers, and AI-native development teams who need to ship reliable API integrations fast—particularly those using AI coding assistants and seeking to eliminate the "works in tests, breaks in prod" cycle.