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Delx Ordinal
x402
Delx Ordinal is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Converts an integer into its English ordinal string representation (e.g. 1→1st, 2→2nd, 3→3rd).
Price / call$0.001
Success—
StatusUnknown
How this service works
Format an integer as an English ordinal (1st, 2nd, 3rd…). Call when you need human-facing ranks or step labels for agent UIs. Returns ordinal string and n for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.
Output
Returns a JSON object containing the ordinal string (e.g. '42nd') and the original integer n, with no external network calls or data retention.
Example use cases
Leaderboard rank display
“I have a leaderboard and need to show each player's position as an ordinal — take the number 7 and give me the proper English label for it, like 7th.”
Step-by-step wizard labels
“I'm building a multi-step onboarding flow and need to label each step in plain English — convert step number 3 into its ordinal form so I can show it in the UI.”
Competition placing announcement
“We just finished a race and I need to announce the results — format the placing number 21 as a proper English ordinal like 21st for the announcement text.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/ordinalWhen to prefer
Choose this endpoint when you need a simple, reliable, zero-dependency ordinal formatter for agent UIs, leaderboards, step labels, or ranked lists and want a micropayment-gated, stateless operation with no API key management. Prefer it over custom code when building agents that need consistent English ordinal formatting without maintaining local logic.
Side effects
- Non-integer input returns a validation error
- Missing 'n' field causes a bad request response
- Very large integers may exceed expected formatting bounds
- Payment authorization failure via x402 blocks the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| n | integer | Input field: n. |
Output
Schema · Response
{
"type": "json",
"example": {
"n": 21,
"schema": "delx/util-ordinal/v1",
"ordinal": "21st"
}
}Tags
x402
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