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ChemEq Balance Equation
x402
ChemEq Balance Equation is a paid API for AI agents from chemeq.openverbs.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-14).
Balances a chemical equation (e.g. 'H2 + O2 -> H2O') into the smallest whole-number coefficients using exact rational linear algebra.
Price / call$0.004
Success—
StatusUnknown
How this service works
Balance an equation such as "H2 + O2 -> H2O" into the smallest whole-number coefficients using exact rational linear algebra. Equations that cannot be balanced with positive coefficients are clean 400s.
Output
Returns the smallest whole-number stoichiometric coefficients for each species in the balanced equation, computed via exact rational linear algebra. Returns a clean 400 error if the equation cannot be balanced with positive integer coefficients.
Example use cases
Balance combustion reaction for homework
“Balance the combustion of propane for me: C3H8 + O2 -> CO2 + H2O, and give me the smallest whole-number coefficients.”
Verify photosynthesis equation
“Is this equation balanced correctly? CO2 + H2O -> C6H12O6 + O2 — if not, balance it and tell me the right coefficients.”
Balance iron oxidation reaction
“Balance this rust reaction: Fe + O2 -> Fe2O3, using the smallest whole-number coefficients.”
Technical details
Endpoint
POSThttps://chemeq.openverbs.com/v1/balanceWhen to prefer
Choose this endpoint when you need precise, mathematically exact balancing of chemical equations using rational linear algebra — not heuristic or approximate methods. It handles any well-formed equation with a '->' or '=' arrow and returns guaranteed minimal integer coefficients. Prefer it over general-purpose LLMs or chemistry toolkits when correctness and reproducibility matter, such as in educational tools, stoichiometry calculators, or automated chemistry pipelines.
Side effects
- 400 error when equation cannot be balanced with positive integer coefficients (e.g. impossible reaction)
- 400 error for malformed equation strings missing arrow or valid chemical formulas
- Empty or missing 'equation' field returns validation error
- Unrecognized element symbols or syntax errors in formula string
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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