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lilambd Isotopes Lookup
x402
lilambd Isotopes Lookup 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).
Returns a paginated list of chemical isotopes, optionally filtered by element symbol.
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
A JSON object with a `data` array of isotope records, a `count` of total matching records, and an `attribution` string crediting the source license. The data array is paginated based on limit and offset parameters.
Example use cases
Research isotopes of a specific element
“I need all the isotopes for uranium from lilambd's isotope dataset — get me up to 200 results.”
Paginated isotope table exploration
“Pull the first 50 isotopes from the lilambd isotopes endpoint, then get the next 50 after that so I can browse the full dataset.”
Element isotope count lookup
“How many isotopes does hydrogen have? Check the lilambd isotopes API filtered by element H and tell me the count.”
Technical details
Endpoint
GEThttps://api.lilambd.com/units/isotopes?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need structured, paginated isotope data filterable by element symbol and backed by attributed scientific sources. Prefer it over general chemistry APIs when you need lightweight per-call pricing via x402 micropayments rather than subscription access.
Side effects
- Invalid element symbol returns empty data array with count 0
- limit value out of range (1-200) may return default 50 rows or an error
- Missing required `input` object results in a validation error
- Payment not included or insufficient USDC results in HTTP 402 response
- offset larger than total count returns empty data array
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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