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SignalDesk AI Password Search Space Calculator
x402
SignalDesk AI Password Search Space Calculator is a paid API for AI agents from x402-agent.kariguetoazul.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-10).
Computes the theoretical upper-bound entropy (in bits) and character pool size for a given password sample, without storing or evaluating the actual secret.
Price / call$0.001
Success—
StatusUnknown
How this service works
Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.
Output
Returns a JSON object with the password length, the assumed character pool size (e.g. 95 for full printable ASCII), an upper-bound entropy value in bits (computed as log2(pool^length)), and a warning that real human-chosen passwords are typically much weaker than the theoretical maximum.
Example use cases
Evaluating password policy compliance
“I'm writing a password policy for our company and want to verify that a sample password like 'C0mplex!ty99' meets at least 60 bits of entropy — can you calculate its upper-bound entropy and character pool size for me?”
Explaining password strength to a user
“My user just set their password to 'sunshine2024' and I need to explain to them in concrete terms how weak it is — can you compute its entropy in bits and assumed character pool so I can show them the numbers?”
Comparing entropy of different password patterns
“I want to compare the theoretical strength of 'aB3!xY9@qW' versus a shorter password — can you calculate the entropy upper bound and character pool for 'aB3!xY9@qW' so I can use it as a benchmark?”
Technical details
Endpoint
POSThttps://x402-agent.kariguetoazul.workers.dev/api/encoding/password-search-space?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, cheap, mathematically grounded upper-bound entropy estimate for a password sample — particularly useful for policy checks, educational explanations, or automated audits. It does not check against breach databases or model human password patterns, so prefer a dedicated password-strength library (zxcvbn, etc.) if you need realistic crack-time estimates or dictionary-attack resistance scoring.
Side effects
- Password string exceeds 256 characters — request rejected
- Empty or missing password field — likely returns error or zero entropy
- Payment of 0.001 USDC not completed — 402 Payment Required response
- Malformed JSON body — 400 Bad Request
- Sending a real production password is discouraged by the API's own warning
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| password | string | Sample password; do not send a real secret. |
Output
Schema · Response
{
"type": "json",
"example": {
"length": 10,
"warning": "Assumes uniform random independent characters; human passwords can be much weaker.",
"assumed_pool": 95,
"upper_bound_bits": 65.69855608330948
}
}Tags
x402
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