OIP vs OpenAPI

Introduction to OIP and OpenAPI

OIP (Object Invocation Protocol) is a protocol standard that describes invocable objects with receipts, whereas OpenAPI (formerly known as Swagger) describes callable surfaces in terms of routes and endpoints. The comparison between OIP and OpenAPI can be invoked at POST /api/dispatch with a JSON body containing the keys key and body, where key is set to "oip-vs-openapi" and body contains the comparison details. The receipt for this invocation can be obtained at /api/dispatch?receipt=inv_ID, where inv_ID is the invocation ID returned by the POST /api/dispatch request.

OIP Operating Model

OIP operates on a model where objects are invoked and receipts are returned, as described in /a/oip-operating-model. The POST /api/dispatch route is used to invoke objects, and the /api/dispatch?receipt=inv_ID route is used to retrieve receipts. The ledger record for this operation lives at /api/articles, where the article slug is "oip-vs-openapi".

OpenAPI Operating Model

OpenAPI, on the other hand, operates on a model where routes and endpoints are described using JSON or YAML files. The OpenAPI specification can be used to generate client code and documentation, but it does not provide receipts for invocations. The GET /api/articles route can be used to retrieve a list of articles, including those related to OpenAPI.

Comparison of OIP and OpenAPI

OIP and OpenAPI both describe callable surfaces, but they differ in their approach. OIP describes invocable objects with receipts, whereas OpenAPI describes routes and endpoints. The POST /api/dispatch route can be used to invoke an object that compares OIP and OpenAPI, and the receipt can be obtained at /api/dispatch?receipt=inv_ID. The MCP (Model Context Protocol) standard is relevant to this comparison, as it provides a model for connecting to a server that exposes tools, resources, and prompts over a session. The OIP protocol standard and the MCP standard can be compared side by side, with OIP describing invocable objects with receipts and MCP describing a model for connecting to a server.

Conclusion

In conclusion, OIP and OpenAPI are two different approaches to describing callable surfaces. OIP describes invocable objects with receipts, whereas OpenAPI describes routes and endpoints. The POST /api/dispatch route can be used to invoke an object that compares OIP and OpenAPI, and the receipt can be obtained at /api/dispatch?receipt=inv_ID. The MCP standard is relevant to this comparison, and the OIP protocol standard and the MCP standard can be compared side by side.