From your API to a live MCP server,
in under a minute.
list_orders
get_product
create_order
OAuth
DCR
RFC 7591
Supported by all MCP clients
Real-time data from your MCP servers,
turned into decisions
Your customers use read operations 3× more than writes — typical for B2B SaaS APIs.
Order Lookup Flow
94% confidence
Last 30 days
82
total errors
create_payment
Stripe API
get_inventory
Shopify
send_webhook
Ops Tools
Go live as a managed MCP server in under a minute, no load, no stress, no time wasted. More data, more insights, more revenue.
Your testers exercise any API in plain language — create test data, reproduce bugs, and validate responses from their AI client. Wrap your API as an MCP server and the whole team is testing in about five minutes.
Live in ~5 minutes
Upload your spec, point it at staging, share the URL. No SDK, no server to run.
Safe by default
Read-only to start, destructive tools off, scoped test credentials, every call logged.
Flows become regressions
Cast spots your recurring test sequences and drafts them into reusable skills.
Claude Desktop
mcp.staging-api
Create a test order for user 42, then confirm it shows in listOrders.
createOrder
/orders
getOrder
/orders/1042
listOrders
/orders
Test passed — order #1042 created and verified in listOrders.
Claude, ChatGPT, Cursor — they all need to call your APIs. Cast makes that a 5-minute task, not a sprint.