Use the engine from Python or the browser.

The SDKs wrap the same hosted API surface, with local execution available for fast iteration and product UX.

Python

pip install niyati-core
import niyati

session = niyati.NiyatiSession(schema_json, api_key="your_key")
remote = session.evaluate(budget=None, capability="full")
local = session.simulate_local()

The Python package publishes as niyati-core, imports as niyati, and the current SDK release is 0.3.5.

JavaScript / WASM

npm install @causalorlabs/niyati-core
import init, { NiyatiSession } from "@causalorlabs/niyati-core";

await init();
const session = new NiyatiSession(schemaJson, "your_key", "https://api.causalorlabs.com");
const remote = await session.evaluate(null, "full");
const local = await session.simulate_local(null);

The JS package name currently published to npm is @causalorlabs/niyati-core at release 0.3.5.

Versioning

Surface	Current version
`X-Niyati-Version` hosted API contract	`0.3.2`
Python SDK package	`0.3.5`
JavaScript / WASM SDK package	`0.3.5`

Supported Solve Methods

Method	Route
`solve_reachability(payload_json)`	`/v1/solve/reachability`
`solve_fragility(payload_json)`	`/v1/solve/fragility`
`solve_trajectory(payload_json)`	`/v1/solve/trajectory`
`solve_multiagent(payload_json)`	`/v1/solve/multiagent`
`solve_competition(payload_json)`	`/v1/solve/competition`
`solve_pareto(payload_json)`	`/v1/solve/pareto`

Execution Model

Hosted API is the production source of truth
Local execution is capped for UX and iteration
Hosted calls include timeout, retry, and version headers
simulate can run anonymously; solve methods need a key

Developer ergonomics

Use simulate for exploration, then move to solve_* methods when you need direct theorem surfaces in production demos.