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