UUID Generator API
Generate UUID v4, v7, ULID, or nanoid identifiers. Batch up to 100 at once. Sortable, compact, or random formats. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Quickstart -- MCP
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"uuid-generator": {
"url": "https://uuid-generator.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl -X POST "https://uuid-generator.api.klymax402.com/api/generate" \
-H "Content-Type: application/json" \
-d '{}'
# -> 402 Payment Required, with an x402 payment challenge in the response body
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
utility_generate_uuid | POST | /api/generate | $0.003 | Generate unique identifiers |
utility_generate_uuid
Use this when you need to generate unique identifiers for database records, API keys, or session tokens. Returns an array of IDs in the chosen format.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
format | string | no | Format: uuidv4, uuidv7, ulid, nanoid (default: uuidv4) |
count | number | no | Number to generate (default: 1, max: 100) |
length | number | no | Length for nanoid (default: 21) |
Example response:
{"ids":["550e8400-e29b-41d4-a716-446655440000"],"format":"uuidv4","count":1}
When to use: creating primary keys, correlation IDs, or unique file names. Use uuidv7 or ulid WHEN you need time-sortable IDs for databases. Use nanoid FOR short URL-safe tokens.
Not for: hashing (use crypto_generate_hash), password generation (use security_check_password), slug generation (use text_generate_slug).
Example agent prompts
- "Generate unique identifiers for database records, API keys, or session tokens"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (
eip155:8453) - Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
- Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT