REST API Design Checklist
Comprehensive REST API design checklist covering URL design, methods, status codes, security, and documentation.
How it works
- 1Configure your options above
- 2Click "Show Checklist" — processing happens in your browser
- 3Copy or download the result
What to do next
About REST API Design Checklist
REST API Design Checklist is a single-page tool for the common developer utility task it is named after. Comprehensive REST API design checklist covering URL design, methods, status codes, security, and documentation. The interface keeps the input on one side, the configurable options in the middle, and the result on the other side. Most jobs start and finish without any scrolling.
If you fit any of these descriptions, REST API Design Checklist should slot cleanly into your workflow: frontend developers prepping fixtures; backend developers inspecting requests; engineers debugging API payloads. The tool keeps the controls focused on what matters for each of these use cases.
REST API Design Checklist parses your file with standard browser APIs entirely inside the browser, applies the options you selected, and returns a download. The processing has no network step, which means a slow or intermittent connection does not slow down the work — once the page is loaded, only your CPU and RAM are involved.
Architecturally, REST API Design Checklist is a single-page client. The processing layer is standard browser APIs; the UI is a thin React shell on top. Inputs flow through the engine and the output is returned to the browser as a Blob you can save or copy. The 0 MB cap is the only hard limit and it exists to keep memory usage stable on every device.
REST API Design Checklist works well as a bookmarked utility you reach for when you need it. The first visit shows you what the tool does; the second is when you realise it is a low-friction option for the task and worth keeping in your tab list.
If your task needs more than one step, chain REST API Design Checklist with HTTP Methods Reference, cURL Command Builder, and HTTP Request Builder. Each tool produces output that is a clean input to the next, so multi-step workflows are just a matter of opening the next tool in a new tab and continuing.
The download is delivered as a clearly named file the moment processing completes — no email link, no "your result will be ready in 5 minutes" queue, no expiry timer. The file is generated in your browser and saved by your browser's normal download flow.
The hard constraints are easy to remember. Maximum input: 0 MB. Multiple files per run: no — one input at a time, by design, to keep results predictable. The same controls apply on every run.
REST API Design Checklist is built around steady iteration on a small set of options rather than feature creep. Every additional setting attracts a slightly different audience, but a long settings panel makes the common case slower for everyone. The current controls reflect what users of the tool actually use.
Some background on the design choices behind REST API Design Checklist: every option you see on the page is there because a real workflow needs it, and every option that is not shown has been deliberately omitted to keep the common case fast. The bias is toward minimal-but-complete.
Useful patterns when working with REST API Design Checklist: keep the input file open in another tab so you can compare against the result; give the output file a descriptive name when saving so you can find it later (the default name is sensible but generic); and treat each run as independent — the tool has no concept of "history", which means you cannot accidentally pollute one job with leftovers from another.
For most failure modes, refreshing the page and re-running the job is enough — the engine has no persistent state to corrupt. If the same input fails twice in a row, the input itself is most likely the problem (a truncated file, an unexpected variant of the format, or a stream the engine does not recognise).
As a single-page tool, REST API Design Checklist stays focused on one developer utility step. Multi-step workflows are composed by chaining adjacent tools — each tool produces a standard file the next one can read directly, so a longer pipeline is just a sequence of short tab-and-tab visits.
Open the workspace above to start using REST API Design Checklist. The engine loads on the first interaction so the page itself stays light, and once the tool is warm it processes subsequent jobs quickly. The moment the page is interactive, the tool is ready to do real work on your file.
How it works
- 1Reach the REST API Design Checklist page in your browser to begin.
- 2Select the developer file you want to process — drag-and-drop and the file picker both work.
- 3Adjust the options to match what you need. Sensible defaults cover the most common case, so you can usually skip this step.
- 4Click to start the job. The engine (standard browser APIs) processes the input in the page; you can watch the progress indicator until it completes.
- 5Save the output when it is ready.
- 6Repeat the process for additional inputs whenever you need to. The page stays loaded, so subsequent runs are quick.
Common use cases
- Decode a token to confirm its claims during a debugging session using REST API Design Checklist.
- Inspect a payload during local development without writing a script.
- Generate a quick fixture without leaving the browser.
- Validate a config blob before pushing to staging.
- Generate boilerplate from a single specification line.
- Pretty-print a minified blob during incident triage.
- Compare two API responses to spot a regression.
- Encode binary content for transport in a JSON body.
FAQ
Is this a standard?
These are widely accepted best practices, not a formal standard. Adapt to your project needs.
Versioning approach?
URL path (/v1/) and Accept header versioning are both listed as valid approaches.
GraphQL?
This checklist is REST-specific; GraphQL has its own design patterns.
Private?
Yes — generated locally.
Can I customize it?
Copy the checklist and modify it for your team's specific API guidelines.
OpenAPI?
The checklist recommends OpenAPI/Swagger specs; use swagger-ui or redoc for documentation.
Does REST API Design Checklist work in Safari, Firefox, Chrome and Edge?
REST API Design Checklist works in any modern browser released in the last few years — Chrome, Edge, Firefox, Safari, Brave, Arc and the major Chromium derivatives are all supported. The underlying engine relies on widely-supported web APIs, so there is nothing exotic to install. If you are on a very old browser version and the tool fails to load, updating to the latest release of your preferred browser is the only fix needed.
Why did REST API Design Checklist reject my input?
Failures usually fall into one of three buckets: the input is in an unsupported format, the input is over the size cap, or the input is structurally malformed (a truncated download, a partial export, or a stream the engine does not recognise). The first two are easy to confirm — check that your file is in a supported format and that it is below 0 MB. For the third, opening the file in its native viewer first is the fastest way to confirm the source is intact.
Can I trust the output of REST API Design Checklist for important work?
REST API Design Checklist is built on standard browser APIs, which is the same class of engine used by professional developer utility pipelines. For deterministic operations, the output is byte-identical to what an equivalent CLI run would produce; for operations involving a codec or a model, the result is well within the range of what comparable tools generate. If you have a specific reference output you need to match, run a small test job first to confirm the configuration produces what you expect.
What permissions does REST API Design Checklist need to function?
REST API Design Checklist only needs the standard web platform — file picker access for the inputs you choose to load, and optionally clipboard access if you copy the result rather than downloading it. There is no microphone, camera, geolocation or background-permission request, because none of those are needed for the work the tool does.
How accessible is the REST API Design Checklist interface?
REST API Design Checklist uses native HTML controls wherever possible, which means keyboard navigation, focus rings, and screen-reader labels work the way the platform expects. The drop zone accepts files via the keyboard-accessible file picker as well as drag-and-drop, and result downloads use standard browser download flows. If you spot an accessibility gap, Favtoo treats it as a bug worth fixing.
Which file formats does REST API Design Checklist accept?
The accepted formats are listed in the upload area on the tool itself. If your input is in a format that is not directly supported, convert it first using one of Favtoo's converter tools — every Favtoo converter outputs a file that is a clean input to the next tool in the chain.
How often is REST API Design Checklist updated?
REST API Design Checklist is updated whenever the underlying engine releases an improvement or a bug fix. Because the tool is delivered as a static page, every visit fetches the latest version automatically — there is no "version" to manage on your end. If a particular release ever changes default behaviour, the change is documented on Favtoo's changelog so you can confirm what shifted.
Does REST API Design Checklist work on a phone or tablet?
REST API Design Checklist runs in any modern mobile browser — Safari, Chrome, Firefox and the in-app browsers in most messaging apps all support the underlying APIs. Performance depends on the device: a recent phone handles typical inputs nearly as fast as a laptop, while older devices may take a few seconds longer near the 0 MB ceiling. The interface lays out cleanly on small screens, so you do not need to pinch-zoom to see the controls.