SpineBones

Input—per 1M tokens

Output—per 1M tokens

Context—tokens

WeightsClosed

About

SpineBones is ranked #13 of 46 in 2D character animation software on Inferse. It runs on macOS, Windows. There is a free plan.

Compared on 2D character animation software

Free plan: Yesspinebones.agara.id
Mesh deformation: Yesspinebones.agara.id

Facts

Purpose: SpineBones is a 2D skeletal animation editor for building bone rigs, keying them on a timeline, and exporting animations.spinebones.agara.id · 2 Oct 2026
Rigging: It supports bone hierarchies, re-parenting, grouping, and inverse kinematics.spinebones.agara.id · 2 Oct 2026
Timeline: The timeline supports inserting, moving, selecting, copying, and looping keyframes, with easing per key and audio tracks.spinebones.agara.id · 2 Oct 2026
Artwork: Slots can bind PNG, JPG, SVG, or WebP artwork, with multiple attachments per slot and frame-by-frame swapping.spinebones.agara.id · 2 Oct 2026
Mesh and onion skin: Users can deform attachment meshes with keyed vertices and view neighboring poses with onion skin.spinebones.agara.id · 2 Oct 2026
Animation modes: SETUP holds the base pose and ANIMATE holds keyframes; the editor supports keying position, rotation, and scale.spinebones.agara.id · 2 Oct 2026
Exports: It exports WebM video, transparent PNG frame sequences, sprite sheets with atlas data, and portable .sbn project packages; legacy .json projects open too.spinebones.agara.id · 2 Oct 2026
Agent integration: Its MCP bridge works with Claude and other MCP clients to create rig elements and keyframes, rescale animation frame rates, and trigger exports.spinebones.agara.id · 2 Oct 2026
Offline workflow: The maker describes the workflow as having no cloud round trip and says projects can be saved in a portable package for work on another machine.spinebones.agara.id · 2 Oct 2026
Access and trial: The app is free to download with no account, licence key, or trial timer.spinebones.agara.id · 2 Oct 2026
System requirements: The maker lists macOS 12 or newer and Windows 10 or newer.spinebones.agara.id · 2 Oct 2026
Intended use: The maker describes sprite-sheet exports as sized for game engines and 2D frameworks, and PNG sequences as suitable for compositing tools.spinebones.agara.id · 2 Oct 2026