API Key Structural Check
Checks a pasted key for length, character variety and simple weak patterns. Its character-pool bits are only an upper bound; it cannot identify issuer or verify entropy.
About this api key structural check
Checks a pasted key for length, character variety and simple weak patterns. Its character-pool bits are only an upper bound; it cannot identify issuer or verify entropy Validates and converts interface schemas client-side without transmitting private endpoint specifications.
API contract & interface schema logic
Counts length and distinct characters, estimates a character-pool upper bound and reports obvious placeholder, repeat, sequence or short-key patterns.
Worked schema conversion scenario
Scenario: Check structural warnings on a short repeatable API-key string.
Sample input:
Processing: Trim the text, count length and distinct characters, estimate a character-pool upper bound, and flag placeholder and short-key patterns.
Illustrative output:
Schema version & syntax constraints
Length and unique count use Unicode code points, not displayed grapheme clusters; the character-pool bits are only an upper bound from observed classes. No provider-prefix recognition or true entropy measurement is performed. A clean result does not prove random generation.
API specifications and schema models in API Key Structural Check reflect OpenAPI and JSON Schema standards. Verify generated schemas against your runtime validator.
Client-side schema processing boundary
Schema analysis and protocol mapping in API Key Structural Check execute locally in the browser tab without uploading endpoint definitions.
OpenAPI Specification & JSON Schema standards
OpenAPI Specification standards and JSON Schema draft definitions:
- Implementation-specific browser utility or reference guide (no single governing external standard)
API Key Structural Check verification · Audit standards
How to use it
- Paste an API key string.
- Count length and distinct characters, estimate a character-pool upper bound, and flag simple weak patterns.
- Read the structural assessment and randomnessVerified field.
Frequently asked questions
What does API Key Auditor measure from one key string?+
It trims the submitted string, reports length and unique characters, calculates a character-pool upper bound, and flags placeholder words, repeated runs, simple sequences, or length below 16.
Can you show an input and its result?+
Thirty-two repeated a characters produced a structural repeated-pattern warning and randomnessVerified false; the result deliberately did not claim proven entropy.
Can this auditor validate a secret against its provider?+
No. It does not call Stripe, GitHub, AWS, OpenAI, or any API. A plausible-looking prefix and character count do not establish a key is valid, active, or safely generated.
Does a high upper-bound bit count prove randomness?+
No. The bound reflects observed character classes and length only. The tool states that actual entropy cannot be inferred from one displayed key without generation-process evidence.