Request composition
Combines a supported HTTP method, absolute URL, bounded query parameters, headers and optional JSON body into one reviewable result.
Day 031 / APIs / Request Composition
API Request Builder
/ Overview
A dependency-free Python CLI that validates a bounded HTTP request specification and creates redacted text, JSON and shell-safe cURL previews without sending network traffic.
Composing an API request by hand can hide malformed URLs, ambiguous query encoding, unsafe header line breaks or accidentally exposed credentials. Running a command immediately also skips the chance to review exactly what was assembled.
/ Provided servicesClear thinking.
Clear thinking.
Practical delivery.
Privacy-aware preview
Replaces authorization, cookie, token, secret and API-key header values before they reach text, JSON or cURL output.
Explicit execution boundary
Makes no network connection and leaves command execution as a separate, deliberate action for authorized endpoints.
/ Solution
API Request Builder validates a compact JSON specification, composes its HTTP method, URL, query parameters, headers and optional JSON body, then produces deterministic text, JSON and shell-safe cURL previews. It always redacts sensitive header values and never sends the request.
/ Impact
Offline request composition
Deterministic query encoding
Sensitive-header redaction
Shell-safe cURL preview
Bounded defensive validation
Twelve passing standard-library tests
Python standard library
Argparse, pathlib, urllib.parse, JSON and shlex provide the complete dependency-free command-line workflow.
API data handling
Applies URL validation, deterministic query encoding, header safeguards and JSON body limits without depending on a remote service.
Unittest
Twelve tests cover URL boundaries, query composition, sensitive values, header injection, body rules, immutability and CLI output.