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Periodic Table Element Search
x402
Periodic Table Element Search is a paid API for AI agents from chem.openverbs.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-14).
Search the periodic table by name or symbol substring, returning ranked matches (exact, prefix, then substring) up to a specified limit.
Price / call$0.004
Success—
StatusUnknown
How this service works
Search the periodic table by name or symbol substring. Exact matches rank first, then prefix matches, then substring matches. Returns up to `limit` elements (default 20) plus the total match count.
Output
Returns a ranked list of matching periodic table elements (exact matches first, then prefix matches, then substring matches) up to the requested limit, along with the total count of all matches found.
Example use cases
Element symbol autocomplete for chemistry app
“Find all periodic table elements whose symbol starts with 'Fe' or contains 'fe' — give me up to 10 results ranked by closest match.”
Teaching quiz about element names
“Search the periodic table for elements with 'gold' in their name so I can build a quiz question around them.”
Disambiguating similar element names
“I'm not sure if 'Cr' or 'Cu' matches chromium — can you search the periodic table for elements with the symbol fragment 'C' and show me the top 5?”
Technical details
Endpoint
POSThttps://chem.openverbs.com/v1/searchWhen to prefer
Use this endpoint when you need fuzzy or partial matching across element names and symbols simultaneously, especially when the user provides an incomplete name or symbol fragment. Prefer this over the exact-lookup sibling endpoint when you don't have the precise symbol, name, or atomic number. It is also well-suited for autocomplete, disambiguation, or exploratory queries across the full periodic table.
Side effects
- Query string shorter than 1 character or longer than 40 characters returns a validation error
- Limit outside 1–118 range returns a validation error
- No matching elements found returns an empty list with total count of 0
- Network timeout or service unavailability returns a 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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