FREE. Discovery for FabTally 3D printing: returns the live 12-printer FDM fleet (printer id, human name, bed/build-volume in mm, nozzle diameter), the 12 supported filament materials (PLA, PETG, ABS, ASA, Nylon, PC, TPU + carbon-fiber variants), and the x402 pricing tiers for the paid slice/quote/DFM tools. No payment required. Call this FIRST to choose a printer and material id before quoting, slicing, or a DFM check.

3D printing DFM / design-for-manufacturability & printability check for an STL/3MF/OBJ model. Default (full=false) is FREE: a geometry-only preview — printable verdict (yes / with-warnings / no), watertight/manifold check, dimensions & volume, fits-on-bed, a wall-thickness estimate vs the 0.4mm nozzle, and an overhang/support heuristic. No payment needed. Set full=true for the PAID full DFM report ($0.01 USDC on Base, x402): everything above PLUS EXACT support-material grams/time and infill material-saving deltas from REAL OrcaSlicer slices, every field labelled exact vs heuristic. Without payment the paid mode returns the x402 challenge (price + how to pay); pass x_payment to settle. Great before quoting or slicing to catch thin walls, non-watertight meshes, and support-heavy geometry.

PAID ($0.02 USDC on Base, x402). Orientation optimiser for FDM 3D printing: really slices up to 4 candidate build orientations with automatic supports on the chosen printer and recommends the one that uses the LEAST support material (exact, slice-derived), reporting the filament/support savings vs printing the model as-is. Reduces support waste, print time, and post-processing. Costs more than other tools because it runs multiple real slices. Without payment, returns the x402 challenge (price + how to pay); pass x_payment to settle and get the recommended orientation.

PAID ($0.002 USDC on Base, x402). Geometry only, no slice: bounding box (mm), volume (cm3), triangle count, watertight flag, and a fits-on-bed check for an optional printer. Cheap sanity check for an STL/3MF/OBJ model. Without payment, returns the x402 challenge (price + how to pay).

PAID ($0.005 USDC on Base, x402). Slicer-accurate FDM 3D-printing price quote from a real OrcaSlicer slice (not an estimate): print time, filament grams, and a priced quote (material + machine time + setup, with automatic volume discounts). Upload an STL/3MF/OBJ/STEP model. Without payment, returns the x402 challenge (price + how to pay).

PAID (x402, USDC on Base). Full OrcaSlicer slice on any of the 12 FDM printers: print time, filament grams, layer count, geometry, and fits-on-bed. Optionally returns a preview PNG render and/or the sliced G-code. Price tiers by outputs: base $0.005; +preview PNG $0.01; +G-code $0.015; +preview+G-code $0.02. Upload an STL/3MF/OBJ/STEP model. Without payment, returns the x402 challenge for the selected tier.