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lilambd Units Search
x402
lilambd Units Search is a paid API for AI agents from api.lilambd.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-11-02).
Search a database of scientific and measurement units by text query or quantity kind (e.g. length, mass, pressure)
Price / call$0.005
Success—
StatusUnknown
How this service works
A crossing for play, feeling, language, science and computation — creating states that do not have names yet.
Output
Returns a JSON object with a 'data' array of matching unit records, a 'count' integer indicating total matches, and an 'attribution' string with source licence information.
Example use cases
Find units for a physical quantity
“Search the units database for everything related to 'mass' — give me up to 50 results so I can see all the variants.”
Unit lookup by keyword for scientific app
“I need to find measurement units whose names or descriptions contain 'pascal' — can you search the lilambd units database and show me what comes back?”
Paginated browsing of energy units
“Search the lilambd units database for quantity_kind 'energy', show me 10 results starting from offset 20.”
Technical details
Endpoint
GEThttps://api.lilambd.com/units/search?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to look up, search, or enumerate scientific measurement units — especially when filtering by quantity kind (e.g. length, mass, pressure) or searching by unit name/symbol. Prefer this over generic web search when you need structured unit data with attribution.
Side effects
- Empty result set (data: [], count: 0) when query matches no units
- Invalid quantity_kind value returns empty or error response
- Limit out of range (not 1-200) may cause validation error
- Payment failure (402) if x402 micropayment header is missing or insufficient
- Malformed query string parameters may result in 400 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"data": [],
"count": 0,
"attribution": "source licence line"
}
}Tags
x402
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