Lingshu Solver is distributed by Guangzhou Hongchen Lingjing as software authorization / technical service. By using the service you agree to the terms below.
1. What this software is
A deterministic equation solver. It takes a system of equations and returns numeric solutions with residual diagnostics.
It does not generate, evaluate, or store content. It produces numbers, and it is not a language model.
It does not provide legal, medical, financial, or engineering-advice output. Residual reports are diagnostics, not recommendations.
2. Acceptable use
You may not use the solver to compute results for unlawful purposes, or to produce instructions or material that is unlawful where you intend to use it.
Where a computation could support an illegal act, we reserve the right to refuse the request. The tool stays neutral; its output is not a licence to do anything.
3. Accuracy and limits
We do not warrant that every solution is found. The stated position is verified solution mathematical fidelity, plus best-effort global exhaustiveness.
Solutions are reported against explicit residual tolerances so you can audit them. Always check the residuals before relying on an answer.
The software is provided "as is" without warranty of any kind.
4. Free and metered parts
The web application and the npm package are free. No core capability is withheld from non-payers.
The hosted endpoint may be metered per successful solve. Metering is off by default (LS_METERING=off). When enabled it charges only for solves that actually return a solution; invalid input, parse failures, or internal errors are not charged.
No subscription, no prepaid balance requirement, no usage bundles.
5. Illegal content & takedown
As a neutral computation tool we do not review every request. We act on valid notices.
Report content computing results for illegal purposes to abuse@hongchenlingjing.com. On verification we will block the request path and, where required, restrict the account.