About
Drop-in sandbox APIs for agents and integrations: build and test without test accounts, tokens or fake data to maintain.
Read-only replicas (REST + GraphQL), already loaded with one deep, believable data set. Your real keys stay out of the pipeline, and no run can write to production.
The company
Built and operated by Driftwork LLC
SandboxAPIs is built and operated by Driftwork LLC, a company registered in Arizona, United States. It is a small, independent operation, and it is the same people who answer the mailbox.
Contact
How to reach us
Email team@sandboxapis.dev — a person reads it. For a missing endpoint, a provider we do not mirror yet, or a response that does not match the real thing, /feedback goes to the same place and needs no account.
What we do
25 APIs, mirrored exactly and refused honestly
Point an existing client at one of our hostnames instead of the real provider’s and it works unchanged — same paths, same JSON, same headers, same status codes. Every write is refused in the shape that provider would use, and anything we do not cover answers an explicit error naming the coverage manifest rather than inventing a response.
What is public
We publish it rather than describe it
- The coverage manifest — every endpoint we serve and every one we do not, generated from the test results rather than hand-edited.
- The pinned-snapshot registry — the pinned data sets, each one byte-stable forever, with the recipe that produced it.
- The MCP server’s source, under the MIT licence, with the public examples, the npm package and the MCP registry entry it is published as.
- The answer-key eval pack, with its result: 53 of 53 answer-key items correct on the pinned g12 generation, every answer held still by a test.
- The price floor — what stays free, said as a commitment rather than a current state.