MCP tools

Five tools. Defined jobs.

Kelra returns visual evidence to an agent. It does not infer missing coordinates or automatically edit source code.

`measure`

Calculates geometry from caller-supplied points, lines, rectangles, polygons, or supported runtime snapshots. Operations include distance, bounds, gaps, overlap, alignment, spacing, shape comparison, and transforms.

`sample_color`

Returns exact pixel RGB/HEX/Lab values or regional median color and dispersion for supplied image coordinates or bounds.

`crop`

Returns an exact unscaled crop of a supplied image region. Bounds are integer pixels and crops are clipped to the image.

`compare`

Compares equal-size images, reports pixel/color/structure differences, localizes changed regions, and estimates translation where supported. Registration may be unavailable when evidence is ambiguous.

`verify_edit`

Compares a reference, before image, and after image. When target bounds are supplied, it evaluates the target region and reports outside-target regression evidence.

Runtime-aware comparison and source mapping require caller-supplied instrumentation, snapshots, and project paths. Association is inferred; source candidates are not proof of cause.