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AgentsTools Match Key – Deterministic Similarity Key Generator
x402
AgentsTools Match Key – Deterministic Similarity Key Generator is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-12).
Computes a deterministic similarity key, normalized form, and tokens for a name or address string to enable cheap client-side deduplication and record blocking.
Price / call$0.005
Success—
StatusUnknown
How this service works
Compute a deterministic similarity key for a name or address: the cheap first step of client-side blocking and deduplication. Records that share a key are duplicate candidates to confirm. Returns the key, the normalized form and the tokens. Indicators, not authoritative identity resolution.
Output
Returns a deterministic similarity key string, the normalized form of the input, and an array of tokens. These can be used to group records that are duplicate candidates — they are indicators, not authoritative identity resolution.
Example use cases
Normalize addresses for record blocking
“Take this address — '123 Main St., Suite 4B, Springfield' — and compute a similarity key and normalized form for it so I can group it with potential duplicate address records before doing any expensive fuzzy matching.”
Deduplicate person names in CRM
“I have a person's name 'Jonathan R. Smith Jr.' coming in from a form submission. Generate a deterministic match key and tokens for it so I can quickly find any duplicate contact records in our CRM that might be the same person.”
Fingerprint organization names for linkage
“Compute a similarity fingerprint and normalized form for the organization name 'Int'l Business Machines Corporation' — I want to use the key as a blocking signal before running full entity resolution across our vendor database.”
Technical details
Endpoint
GEThttps://api.agentstools.dev/match/keyWhen to prefer
Use this endpoint when you need a cheap, fast, deterministic first-pass blocking step before doing expensive fuzzy matching or authoritative identity resolution. Ideal for client-side deduplication pipelines where you want to group candidate duplicate records by a shared key without making full comparisons. Prefer this over full entity resolution APIs when cost and latency matter and you only need blocking-level signals.
Side effects
- Missing required 'value' query parameter returns a 400 or validation error
- Invalid entity type enum value causes a validation error
- Empty string input may return a trivial or error key
- Payment not included or insufficient causes 402 Payment Required
- Network timeout or upstream error returns 5xx
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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