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Account Takeover Risk Score (ATO Assessment)
x402
Account Takeover Risk Score (ATO Assessment) is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Fuses a k-anonymity password breach check with domain breach history into a single account-takeover risk score (0–100) with category, per-signal reasons, and raw signals.
Price / call$0.01
Success—
StatusUnknown
How this service works
Composite account-takeover risk score (0-100) fusing a privacy-preserving password exposure check with a domain's known breach history. The password is hashed locally (k-anonymity, never transmitted). Returns ato_risk_score, a category, per-signal reasons and the raw signals so the agent can re-rank. Risk indicators, not a guarantee.
Output
Returns a numeric ato_risk_score (0–100), a risk category label (e.g. low/medium/high/critical), human-readable per-signal reasons explaining which factors drove the score, and raw signals including password exposure count and domain breach records — enabling downstream re-ranking or threshold-based gating.
Example use cases
Login security check at signup
“Before creating this new account, can you assess the ATO risk for the password 'BlueSky#99' against the domain mycompany.com and tell me the risk score and reasons so I can warn the user if it's compromised?”
Flagging high-risk credentials in support queue
“A user just reported a suspicious login on their account at acme.io — can you run an ATO risk assessment using the SHA-1 hash 5baa61e4c9b93f3f0682250b6cf8331b7ee68fd8 and the domain acme.io to see how exposed their credential is?”
Periodic credential hygiene audit
“I want to check if the password 'P@ssword1' is flagged in any breach datasets and whether the domain example.com has a known breach history — give me the full risk score and per-signal breakdown.”
Technical details
Endpoint
POSThttps://api.agentstools.dev/breach/assessWhen to prefer
Choose this endpoint when you need a privacy-preserving, fused ATO risk signal that combines password breach exposure (via k-anonymity, no plaintext transmission) with domain-level breach history in a single scored output. Prefer it over raw HIBP lookups when you want a composite score with actionable categories and reasons rather than a raw count, and when the domain context matters for risk assessment.
Side effects
- Missing required body fields (password, sha1, or ntlm) returns a 400 validation error
- Invalid SHA-1 or NTLM hash format (wrong length or non-hex characters) causes a parsing error
- Domain lookup may return no breach data if the domain is not in known breach databases
- Network timeout contacting upstream breach data sources may delay or fail the response
- Ambiguous domain input (e.g. bare IP addresses) may yield no domain-level signals
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| ntlm | string | Alternative to password: a full 32-hex NTLM hash |
| sha1 | string | Alternative to password: a full 40-hex SHA-1 hash |
| domain | string | Optional domain to fold in its known breach history |
| password | string | Plaintext password — hashed locally with SHA-1; never stored, logged or transmitted |
Tags
x402
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