Name: kernelcad
Author: com.kernelcad

Tools observed via MCP handshake

review_paint_peek_latest — Return the newest brush-painted review packet from a Studio session. After sharing a /p/<slug> link, the user can open it in the browser and paint marks over th
open_in_studio — Save the model as a kernelCAD project AND show it: persists a project revision, returns the interactive Studio viewer (MCP Apps / ChatGPT outputTemplate), and i
get_project — Use this when you need to reopen a saved project or browse what the user has saved — it fetches a kernelCAD Studio project, or lists the signed-in user's saved
get_project_revision — Fetch the exact immutable .kcad source and parameters captured at a prior `open_in_studio` version. Use this to read-after-write verify a release: pass the retu
get_latest_render — Render a project's current model server-side and return it as an inline image so you can SEE what you built. Prefer open_in_studio for the happy path — it alrea
get_model_mesh — Return the raw per-feature triangle mesh (positions/indices/normals) of a project's current model, by slug. For the in-chat 3D viewer widget to render geometry;
request_upload — Use this when the user has a photo, PDF drawing, STEP, STL, DXF, SVG or 3MF file on their device and you need it in a kernelCAD tool (trace_from_image, drawing_
lookup_authoring_skill — Return the kernelcad-authoring skill — conventions for writing .kcad.ts scripts (API surface, parameters, evaluation contract, common pitfalls) — in sections.
mesh_summary — Mesh a kernelCAD .kcad.ts source server-side and return a COMPACT geometry summary — overall bounds plus, per feature, its id, kind, triangle count, and boundin
evaluate_script — Use this when you need to run a script and check it compiles. Run a kernelCAD .kcad.ts script and report pass/fail + feature count + diagnostics. When the scene
diff_scripts — Use this when you need to see exactly what changed between two script versions. Structured geometric delta between two versions of a kernelCAD script — a baseli
inspect — Use this when you need to read facts about a model. One reader, selected by `of`: - 'assembly' — physical assembly inventory (parts, bboxes, connectors, mates,
verify — Use this when you need to check a design against a rule set. One verifier, selected by `check`: - 'assembly' — mate-aware assembly validator on the active sessi
why_did_this_fail — Use this when you need to trace why a feature failed. Walk the upstream chain of a failing feature. Returns the diagnostics of the requested feature plus the di
set_param — Use this when you need to edit a param() default value in a kernelCAD script. Returns the modified code as text plus diagnostics from re-evaluating the result.
add_feature — Use this when you need to insert a new feature line into a script. Insert a new feature line into a kernelCAD script before the last top-level return statement.
add_surface — Use this when you need an organic, freeform, or swept shape — a body shell, panel, fairing, ergonomic curve, lens, or sculpted form — authored as a NURBS Surfac
add_curve — Use this when you need a freeform/organic 3D curve — a body feature line, brow, spine rail, or G2 blend between panels — authored as a Curve3D into the user's .
add_path_segment — Use this when you need a freeform/organic 2D outline — an eyewear brow, ergonomic grip, sneaker midsole, or body silhouette — by appending a curved segment to a
trace_from_image — Use this when you need to trace features from a reference photo into waypoints. Trace pixel-space features from a reference photo into normalized [0..1] waypoin
add_variable_sweep — Use this when you need an organic swept solid whose cross-section changes along its length — a tapering body, horn, bottle, fairing, or duct — authored as a var
add_text — Use this when you need to author text into a kernelCAD script before the last top-level return. One authoring path, selected by `mode`: - 'sketch' — insert a sk
project_curve — Use this when you need to wrap a 2D closed curve onto a 3D face. Insert a `<shape>.projectCurve({ source, face, scaleMode? })` chained call into a kernelCAD scr
add_pattern_feature — Use this when you need to repeat a feature in a pattern. Insert a Shape.patternLinear / .patternCircular / .patternGrid call into a kernelCAD script before the
remove_feature — Use this when you need to remove a feature line from a script. Remove a single line from a kernelCAD script identified by a substring match. Returns the modifie
query — Use this when you need to resolve or inspect topology against a script's lowered geometry. Selected by `mode` (default 'evaluate'): - 'evaluate' — inspect a Que
lookup_api — Use this when you need to list the kernelCAD script-runtime surface: global functions (box, path, selectEdges, helix, etc), Shape methods (fillet, sweep, lower,
lookup_diagnostics — Use this when you need the kernelCAD 26-code diagnostic catalogue with hint templates. Tiny one-shot call; useful for an agent that wants to pre-populate retry
export — Use this when you need to export geometry to a file. One exporter, selected by `target`: - target:'model' — export the script geometry to one file. Pass { file
lookup_cookbook — Use this when you need a canonical pattern snippet for a CAD task. Search the kernelCAD cookbook for canonical pattern snippets. Returns top-k snippets matching
find_part — Search the bundled parts catalog (offline). For a NEMA-17 motor write `await lib.standard.nema17()`; for a 608 bearing write `await lib.standard.bearing608()`.
fetch_part — Fetch one bundled catalog part. Prefer `await lib.standard.nema17()` and `await lib.standard.bearing608()` — they are offline and do not download remote STEP. A
solve_sketch — Use this when you need to solve a 2D sketch constraint set. Solve a 2D sketch constraint set. Side-effect-free: pass { entities, constraints } and receive solve
add_constraint — Use this when you need to add a sketch constraint to a list. Append one validated sketch constraint to a constraint list. Side-effect-free: pass { constraints,
add_part — Use this when you need to add a part to an assembly. Durably insert `const <binding> = <assembly>.part(partName, shapeExpression, opts?)` before the final top-l
add_connector — Use this when you need to add a mate connector to a part. Durably insert `<partBinding>.connector(name, { type, origin, axis?, normal? })` before the final top-
add_mate — Use this when you need to author a mate-graph relationship into the source, selected by `relation` (default 'mate'): - 'mate' — a typed mate between two connect
add_workspace_target — Use this when you need to declare a reachability target for a connector. Durably insert `<assembly>.workspace(connectorRef, { reachable, toleranceMm? })` before
set_scene_return — Use this when you need to set how the script returns its assembly. Replace the final top-level return statement with `return <assembly>.model();` or `return <as
solve_mates — Use this when you need to solve the mate graph and get part poses. Run the v0.6 mate-graph solver on the active assembly. Returns { status, poses, iterations? }
review_cad — Use this when you need to review a mechanism for fitness and repair mode. Run the deterministic CAD review loop: evaluate the script, validate the assembly/mate
design_loop — Use this when the goal is complex / production / enclosure / gearbox / robot-arm / multi-body, or when you need evaluate→review/verify→revise until green. PREFE
flatten_pattern — Use this when you need the unfolded flat pattern of a bent sheet-metal part. Return the unfolded 2D flat-pattern of a bent sheet-metal Shape as a Region (outer
evaluate_sdf — Use this when you need to sample a signed-distance field at a point. Sample the signed distance from an in-script sdf.* field at a 3D point. Returns { distance,
capture_animation — Use this when you need to render a script's animation timeline to a video, or a 360° turntable of a model for sharing. Capture a kernelCAD script's animationVie
render_preview — Use this when you need to LOOK at a kernelCAD model — render its script to deterministic PNG views for visual self-check (the visual half of the evaluate → rend
resolve_assumptions — Use this when you need to confirm or override the open facts in an assumption ledger from trace_from_image (missing scale, inferred/assumed values) before commi
run_fea — Use this when you need to know whether a part will hold a load. Runs the linear-static structural study a script declares with `shape.feaStudy({ material, fixed
fea_summary — Use this when you need a structural check's context without paying for a solve. Read-only: returns the stored summary of a previous run_fea (pass the same `outp
send_to_printer — Use this when you need to upload a .gcode file (e.g. written by export with target: "model", format: "gcode") to a real network printer and, by default, start t
repair_script — Use this when evaluate_script reported an error and you want the fix applied rather than described. Takes the candidates why_did_this_fail derives for a diagnos
sweep_tolerance — Use this when you need to check whether a mechanism stays buildable across a tolerance/dimension range, not just at one nominal value. Declares one or more para
diff_geometry — Use this when you need to know WHAT MATERIAL changed between two versions of a model, not just how much. The deeper sibling of diff_scripts: a volume delta alon
drawing_to_cad — Use this when the reference for a part is a 2D engineering drawing PDF (orthographic views with dimensions), not a photo. Deterministic, no vision model: reads
mesh_to_features — Use this when you are handed an STL, OBJ or 3MF of a mostly prismatic mechanical part (plate, bracket, spacer, flange, housing block) and need an EDITABLE kerne
execute_cookbook — Use this when you need evaluate_script (and optionally open_in_studio) for an industry / cookbook demo in ONE step — after lookup_cookbook for industry demos, p

when	check	result	http	latency	detail
3 h ago	mcp initialize	ok	200	36 ms	server kernelcad 1.0.0 · protocol 2025-06-18 · 56 tools
10 h ago	mcp initialize	ok	200	36 ms	server kernelcad 1.0.0 · protocol 2025-06-18 · 56 tools
16 h ago	mcp initialize	ok	200	34 ms	server kernelcad 1.0.0 · protocol 2025-06-18 · 56 tools
22 h ago	mcp initialize	ok	200	38 ms	server kernelcad 1.0.0 · protocol 2025-06-18 · 56 tools
28 h ago	mcp initialize	ok	200	42 ms	server kernelcad 1.0.0 · protocol 2025-06-18 · 56 tools
34 h ago	mcp initialize	ok	200	32 ms	server kernelcad 1.0.0 · protocol 2025-06-18 · 56 tools
2 d ago	mcp initialize	ok	200	64 ms	server kernelcad 1.0.0 · protocol 2025-06-18 · 56 tools
2 d ago	mcp initialize	ok	200	34 ms	server kernelcad 1.0.0 · protocol 2025-06-18 · 56 tools
2 d ago	mcp initialize	ok	200	35 ms	server kernelcad 1.0.0 · protocol 2025-06-18 · 56 tools
2 d ago	mcp initialize	ok	200	35 ms	server kernelcad 1.0.0 · protocol 2025-06-18 · 56 tools

kernelcad

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