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UUID v5 Generator (Name-Based, SHA-1)
x402
UUID v5 Generator (Name-Based, SHA-1) is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Generates a deterministic UUID version 5 by hashing a namespace and name using SHA-1, ensuring the same inputs always produce the same UUID.
Price / call$0.001
Success—
StatusUnknown
How this service works
Generate a deterministic name-based UUID (version 5, SHA-1) from a namespace + name — the same inputs always yield the same UUID, for stable IDs without a database. Namespace may be a UUID or an alias: dns | url | oid | x500.
Output
A UUID version 5 string (e.g. '6ba7b811-9dad-11d1-80b4-00c04fd430c8') deterministically derived from the provided namespace and name using SHA-1 hashing. The same namespace+name pair will always return the identical UUID.
Example use cases
Example prompt
“Generate a UUID v5 for the name 'user-profile-42' using the URL namespace — I need the same UUID every time I pass that exact name.”
Technical details
Endpoint
POSThttps://agent402.tools/api/uuid-v5When to prefer
Use this endpoint when you need a stable, reproducible identifier for a string without storing anything in a database — ideal for deduplication, consistent record IDs, or generating UUIDs deterministically across distributed systems. Prefer this over UUID v4 when repeatability matters, and over UUID v1/v3 when you want SHA-1-based hashing with standard namespace support.
Side effects
- Invalid namespace value (not a valid UUID and not one of dns/url/oid/x500) returns an error
- Missing 'name' or 'namespace' field returns a 400 bad request
- Malformed JSON body causes parse error
- Payment failure (x402) prevents call from completing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| name | string | the name to hash within the namespace |
| namespace | string | a UUID, or alias: dns | url | oid | x500 |
Output
Schema · Response
{
"type": "json",
"example": {
"uuid": "0e3f2f0e-... (deterministic)",
"version": 5
}
}Tags
x402
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