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Give it a 3D model (STL/3MF/OBJ/STEP/PLY) and get a real, slicer-accurate slice on any of 12 calibrated FDM printers: print time, filament grams/metres, layer count, sliced g-code, a PNG preview render, model geometry, and a priced quote. Also offer…","description":"Pay-per-call fabrication utilities for AI agents. Give it a 3D model (STL/3MF/OBJ/STEP/PLY) and get a real, slicer-accurate slice on any of 12 calibrated FDM printers: print time, filament grams/metres, layer count, sliced g-code, a PNG preview render, model geometry, and a priced quote. Also offers signed point-in-time URL attestations. Machine-payable over x402 (USDC on Base, eip155:8453) with a free discovery document; no account, no API key. Free discovery: https://fabtally.com/agent/overview and https://fabtally.com/openapi.json .","publisher":{"name":"Sunstone Soft","url":"https://fabtally.com"},"homepage":"https://fabtally.com/openapi.json","repository":null,"version":"0.2.0","license":null,"protocols":["a2a"],"tags":["3d-printing","slicing","fdm","gcode","manufacturing","x402","quote","pricing","cost-estimate","geometry","mesh","analysis","3d-model","bounding-box","render","preview","png","visualization","attestation","url","ed25519","witness","verification"],"pricing":null,"endpoints":[{"url":"https://fabtally.com","type":"a2a","auth":"none","probeable":true}],"skills":[{"id":"slice","name":"3D print slicing","tags":["3d-printing","slicing","fdm","gcode","manufacturing","x402"],"description":"Slice an uploaded 3D model (STL/3MF/OBJ/PLY/STEP) with our production slicing engine on any of 12 calibrated FDM printers (Bambu A1/A1-mini/P1S/X1C, Prusa MK4/MINI, Creality Ender-3 V3/K1/K1-Max, Voron 2.4 350, Anycubic Kobra 2, Elegoo Neptune 4 Max). Returns print time, filament grams and metres, layer count, model geometry and fits-on-bed; tiers add a PNG preview and/or the sliced g-code (gzip+base64). Choose printer, material (pla, pla-cf, petg, petg-cf, abs, abs-cf, asa, asa-cf, nylon, pc, …"},{"id":"quote","name":"3D printing price quote","tags":["quote","pricing","3d-printing","manufacturing","cost-estimate","x402"],"description":"Slicer-accurate FDM 3D-printing price quote (not an estimate). Upload a 3D model and optional material and quantity; returns print time, filament grams, and a priced quote (material cost + machine time + setup fee, with automatic volume discounts). 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Paid via x402: POST https://fabtally.com/agent/v1/preview ($0.005 USDC on Base)."},{"id":"attest","name":"Signed URL attestation","tags":["attestation","url","ed25519","witness","verification","x402"],"description":"Independent point-in-time observation of a public URL, signed with ed25519 from a neutral third-party host. Returns HTTP status, final URL after redirects, sha256 of the exact bytes, size, and cache headers, plus your chosen check (exists / contains a string / content hash). A verifiable record that a page said something at a specific moment. Free schema and verification key at GET https://fabtally.com/agent/v1/attest/schema . 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