API Request Builder
Build correct API requests with headers, params, and bodies
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Ever lost twenty minutes to a call that failed on one wrong header? Was it the token prefix, the content type, or a query parameter the docs never mentioned? Getting a request exactly right is fiddly work. API Request Builder takes a plain description of the endpoint and writes the call for you, with the method, URL, headers, query string and body in place.
Short answer: API Request Builder is a free tool on EizTools that turns a description of an endpoint into a ready to run request. It writes the method, path, headers, auth, query parameters and body in the language you select.
What is API Request Builder?
It composes one correct call. You say what the endpoint does and what you want to send, and API Request Builder returns the request written out properly, including the auth header, the encoding and the parameters in the right place. It belongs to the coding tools on EizTools.
How Does API Request Builder Work?
Describe the API or endpoint in the prompt box, naming the resource, the method and the fields. Choose a model from the selector, open the advanced options accordion, then generate. The output card holds the request with copy, listen and downloads as TXT, Word or HTML, and the activity history panel keeps this session's generations so you can reopen one.
| Option | Why it matters here | Try first |
|---|---|---|
| Auth | Decides which header the request carries | JWT for a bearer token |
| Language / Framework | The stack the call is written for | Python / FastAPI |
| Output | Just the call, or the call with docs or tests | Endpoint Code |
| Detail Level | Slider from 1 to 100 covering optional parameters | Around 40 |
API Style switches between REST, GraphQL, RPC, CRUD, Webhook and Microservice shapes. The switches add Include Validation, Include Error Handling, Include Examples and Include Docs. Custom Instructions is for the details only you know, such as a versioned base URL.
Who Reaches For A Ready Made Request
- Frontend developers wiring a new screen to an endpoint they did not build
- QA engineers reproducing a bug report as an exact call
- Data analysts pulling a report from a service once a week
- Support engineers checking whether an account really is missing a field
Calling A Search Endpoint With A Bearer Token
You are a frontend developer adding search to a catalogue page. You type this in:
GET /v2/products/search on api.shopfront.io
Query: q, category, page, per_page (max 50).
Sends a bearer token. Returns JSON.Set Auth to JWT and Output to Endpoint Code. The result comes back as a call you can paste and run:
curl -G "https://api.shopfront.io/v2/products/search" \
-H "Authorization: Bearer $TOKEN" \
-H "Accept: application/json" \
-d q=lamp -d category=lighting -d per_page=25Jobs It Handles Without Fuss
Auth you keep forgetting
Bearer, Basic and API key headers written the way the scheme expects, so the first call is not a 401.
Long query strings
Filters, sorting and pagination encoded properly instead of pasted together by hand.
Bodies for writes
POST and PATCH payloads shaped to your field list, with the content type set to match.
Check These Before You Hit Send
It works from your description, so it cannot know a quirk you left out. Confirm the base URL and the version, since a guessed path returns a 404. Check parameter names against the real docs. If a call keeps failing server side, run the response through the Error Fixer.
Avoid Never type a live token or password into the prompt box. Describe the auth type instead, and keep the real secret in an environment variable.
EizTools is a free AI tools platform where every tool works without an account, a quota or a payment. The API Request Builder uses the same surface as the rest of the suite: one prompt box, a model selector you can change per generation, options tuned to this job, and copy or download on every result. Try another model family when a draft misses something.
Frequently Asked Questions
Is API Request Builder free?
Yes. It is free on EizTools with no account, no credit counter and no daily limit. Describe the endpoint, pick a model from the selector and generate as often as you like.
Does it send the request for me?
No. It writes the request. You copy the code, or download it as TXT, Word or HTML, then run it in your terminal or your own project.
Can it build a GraphQL query?
Set API Style to GraphQL and describe the fields you want back. The result includes the query and the variables object rather than a path and a query string.
What if I do not know the exact parameter names?
Describe them in plain words and the draft will guess sensible names. Check them against the real documentation afterwards, because a guessed parameter is quietly ignored by most servers.
A request is small, but a wrong one costs an afternoon. Getting the method, the headers, the auth and the query string written together means the first attempt usually returns data instead of a status code you have to look up.
Describe your endpoint above, set the auth type and the language, then read the call once before you run it.
Sabir Bepari
Founder of EizTools and a passionate AI enthusiast dedicated to building practical, user-friendly AI tools that simplify everyday tasks.
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