> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fincept.in/llms.txt
> Use this file to discover all available pages before exploring further.

# Synthetic teaching signals

> Synthetic piecewise signals with known change points (constant means, Gaussian correlation switches, linear-model coefficients, sine frequencies) from a caller-chosen seed, for demonstrations and for checking how well a method and cost recover the true breaks.

Toolset `changepoint_synthetic`: 1 tool.

| Tool | What it does | Notes |
| - | - | - |
| `changepoint_simulate` | Draws a synthetic piecewise signal with known change points from the caller's seed (a teaching and benchmarking tool, never market data): piecewise-constant means, Gaussian correlation switches, linear-model coefficient changes or sine frequency changes. | |

Inputs, limits and outputs are described in [Fincept Change Points](/guides/fincept-change-points). Full schemas: `fincept_describe_tool`.


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