spice-ts

TypeScript-native SPICE circuit simulator.

ToolchainOpen sourceActiveECAD

What it does and how it connects

spice-ts is the SPICE simulator built for agents: TypeScript-native circuit simulation with an MCP server, JSON in and out, and structured errors a model can act on. It runs in Node, in the browser or inside an agent sandbox, with no ngspice binary to ship.

Accuracy is checked against ngspice on a public, reproducible benchmark, and every outcome is published, failures included. The MCP server is @spice-ts/mcp, which is not published to npm yet and runs from a clone of the repo. The project also ships a live showcase and a parity report against ngspice.

Recurring errors it addresses

Error Index entries this tool is built to reduce or work around.

15 public Xyce regression decks run through ngspice and spice-ts: 12 failed in both engines, mostly on Xyce measurement syntax and dialect rejections, and all six AC decks failed; SPICE netlists still do not travel between simulators.Error Index

Sources

Not verified

Pricing (none stated on the repo or site)
Real user voices (recent issues are the maintainer's own feature requests)
Alternatives (no SPICE peer in the shipped set or this batch)

Last verified November 6, 2026. Listings are informational. The evidence score measures public, verifiable evidence and is not an endorsement or a compatibility claim.