Api call
An API call is a programmatic request or invocation through an application programming interface to access data or invoke an operation.
Learn Go with Pocket-Sized Projects
An HTTP request is a message sent by an HTTP client to ask a server to perform an operation or provide a resource.
- How it is used
- Uses client requests to connect browser or application actions with HTTP handlers and backend gRPC operations.
- How deep it goes
- Explains paths, methods, bodies, parameter parsing, validation, redirects, and version-compatible request structures without detailing transport internals.
- Examples
- Demonstrates game guesses, habit creation, habit ticking, curl commands, Go requests, JSON bodies, and form submissions.
- What you can do after
- Build it from scratch with Go handlers, decoded inputs, registered routes, backend calls, redirects, and request tests.
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ASP.NET Core in Action, 3e
An HTTP request is a client-to-server message specifying an operation on a resource and optionally carrying headers and a body.
- How it is used
- Uses HTTP requests to let clients interact with server resources and receive responses.
- How deep it goes
- Defines request components and follows processing through Kestrel and HttpContext, but defers detailed response-generation components.
- Examples
- Uses browser navigation to a home page and server-generated HTML as the concrete request-response example.
- What you can do after
- Evaluate a request's verb, path, headers, body, response status, and server-side processing path.
The Design of Web APIs, Second Edition
An API call is a request made by a client to invoke an API operation or retrieve API data.
- How it is used
- Uses client requests to invoke API operations, retrieve data, and participate in user-facing application flows.
- How deep it goes
- Explains paths, methods, parameters, statuses, and data locations, but defers detailed input and output modeling.
- Examples
- Demonstrates product searching with GET /products?type=BD and eliminates duplicate account-list calls from a money-transfer flow.
- What you can do after
- Apply it via HTTP by mapping an operation to a path, method, inputs, response status, and output data.
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Related concepts
- asyncio.gatherused by · asyncio.gather is a Python asyncio function that runs multiple awaitable objects concurrently, waits for them to complete, and collects their results.
- contractuses · An API contract is a specification of the operations, data, and behavioral expectations that govern interactions between software components.
- payloadhas part · A payload is the data, code, or other material carried by or attached to a message, token, system, or operation.
- generationproduces · Generation is the computational production of outputs from supplied inputs or context, often by applying a model to produce predictions or new content.
- AI agentused by · An AI agent is a computational system that uses artificial intelligence to interpret information, select actions, and pursue goals through interaction with an environment.
- batchingused by · Batching is the grouping of multiple data items, requests, or operations so they can be processed together as a unit.
These guides are generated from the text of Manning books by Manning's knowledge graph and link to the sections they draw on. The full books are available on liveBook and at manning.com.


