TheMindExpansionNetwork/signal-bloom-257

SIGNAL BLOOM // 257

A native 3D light sculpture drawn live into Open Brush through an MCP bridge — not a mockup, not a render farm, not a screenshot composite.

Forty native frames of the piece orbit here: clips/signal-bloom-257-turntable.mp4 (960×680, 6.67 s, H.264, 80 frames ping-pong). Every frame was rendered by the painting application itself (app.snapshot), one per orbit step. The camera travels a full 360°, but the sculpture is near-axisymmetric, so the orbit reads as subtle rather than dramatic — frame-to-frame, 6.6–8.7 % of pixels differ by ≥ 8 grey levels. See clips/captions.md for what actually moves.

What it is

A 7-metre signal tower on a spiral plaza:

• a 257-point command spiral on the ground, with concentric halo hoops and per-tool tick rings;
• a three-strand lattice helix rising into eight magenta/cyan petals;
• an orange crown with a magenta beacon column and a floating undulating ring above it;
• 120 acid spore streaks and 60 star points falling through the volume.

337 native strokes, 3,613 control points, 58 MCP tool calls, one 178,170-byte Open Brush sketch. Palette by brush family: CelVinyl / MatteHull for colour-true masses, Toon for rings, NeonPulse for spores, Hypercolor (hue-shifting) for the tendrils, Light for the white-hot core, Stars for the drifting spark points.

Easter eggs baked into the geometry

1. The ground spiral has exactly 257 points — one per live command the bridge discovered on the connected application.
2. Each inner tick ring has exactly 14 ticks — one per compact MCP tool exposed (two rings, 28 ticks, because the tool set is drawn twice).
3. 8 preset markers stand on the low hoop, one per packaged Sonic Forage preset, each drawn in that preset's own colour.

How it was made

Stage	Detail
Bridge	Sonic-Forage/forage-brush-mcp 0.2.0 — MCP over stdio, 14 compact tools
Transport	MCP stdio → SSH loopback forward 127.0.0.1:40075 → 127.0.0.1:40074
Application	Open Brush desktop 2.32.17; 257 live commands discovered over its local API
Drawing	draw.stroke per stroke, per-point XYZ + orientation + pressure; all 58 calls accepted
Iteration	v1→v8; each pass undone with batched undo (25 per request) before the next
Evidence	4 aimed stills + 40-frame orbit turntable, native renders with depth/normals sidecars

The scene was verified empty from six aimed cameras before the first stroke, so the piece is additive: nothing was cleared and nothing of the host's was touched. Brush-size and brush-family probes left test strokes, so a clean-room pass undid everything, confirmed an empty canvas, redrew the plan and re-saved with save.overwrite — the delivered sketch contains the sculpture only.

Files

Path	What it is	sha256
clips/signal-bloom-257-turntable.mp4	40 native frames, ping-pong orbit	982be636f14ba899d0845e0dc7d790fc8980be1f799604b27751d0ea3909f64e
clips/captions.md	what each part of the clip shows	—
frames/signal-bloom-257-sheet.jpg	2×2 sheet of the four stills	54b6a1d86f16c479a80fb1a0e9091570048922034af02a1273261759a6dca9a0
frames/SB-HERO.jpg	hero still	adff6eda61191ee02760b465246cd2a1eedda895975cb336a8d9035fb99ec398
frames/SB-Q34.jpg	three-quarter still	8e1bc5133dc126d3c6374c61498cc5683cac02e15fb6519807064da293866c00
frames/SB-LOW.jpg	low-angle still	27f591e63af0e457137c2a63170ad75f306370c6d0b1e24e071efe9d3351ef13
frames/SB-TOP.jpg	top-down still	a1b6c8a01eaf68e1da7eb12a9f7abf6543ec6a8c531463a9a0ec1c4556399fa3
sketch/Signal-Bloom-257-final.tilt	the editable Open Brush sketch	b1d53bacd77ebd8489bce141d6733b0d8acebaf758faa26cd18f19504d5e9817
provenance/plan-v8.json	deterministic stroke plan (337 strokes, 3,613 points)	8e00985dd7520c2cc6a46d60c82d52826529f054c2bab750ad9033990264e8c0
provenance/draw-v8.jsonl	one line per draw call actually sent	393ddf243a9ba954e31d1dd42b7f23ad1967156505f326f4e1d85c84feae2140
provenance/calls-v8.json	full per-call record of the final pass	cac96b97a2bfba089d01e770a0d70fedc6986e34d3a7b442af716a741226ecb0
provenance/manifest.json	machine-readable manifest + hashes	0687f8124c2855fb14d5d0813a7a677725a33a4d7d820ba04845d7856219d30c
provenance/SIGNAL-BLOOM-257.md	the provenance write-up	7bcc7dad1b4da87aa660276f141a9fdd2bdfb9f5be19a6d29b4c26b827d7385a
page/index.html	self-contained presentation page for the piece	e720f344dc9770772cadb8f57bdef36fa82ac917d332385c7cfba710e1a15db2

Plan hash: sha256 87120453d2303ffb144e68d8f45bb655ea2fc8bc9eba67dd82c23281fd5284d8 (recorded inside provenance/manifest.json).

Get it

# whole release (about 3.3 MB)
hf download TheMindExpansionNetwork/signal-bloom-257 --repo-type dataset --local-dir signal-bloom-257

Single file, no CLI:

curl -L -o turntable.mp4 \
  https://huggingface.co/datasets/TheMindExpansionNetwork/signal-bloom-257/resolve/main/clips/signal-bloom-257-turntable.mp4

Open the sketch in Open Brush 2.32.17 or newer (desktop or VR): load sketch/Signal-Bloom-257-final.tilt. The .tilt format is Tilt Brush's; Open Brush reads it natively, and third-party viewers/converters for .tilt also work.

Native findings worth keeping

1. 403 is not "app closed". Open Brush's Mono HTTP listener rejects any non-loopback origin with 403 Forbidden / Server: Mono-HTTPAPI/1.0, even with a spoofed Host header. An MCP bridge must run against a private loopback forward.
2. brush.size.set does not resize API strokes. Raising PointerManager.MainPointer.BrushSize01 from 0.05 to 1.00 and varying per-point pressure 0.15→1.00 produced no visible width change. Width is a property of the brush family.
3. Brush families decide the look. MatteHull and CelVinyl draw solid, colour-true ribbons; Toon/Ink/NeonPulse/Wire/Light stay thin; Light renders emissive white and discards the assigned colour; Hypercolor shifts hue; Stars draws dots.
4. Orientation decides whether a stroke exists visually. Flat ribbons seen edge-on read as hairlines. Volume has to come from density (fans, echoes, clusters), not from size.
5. Fat ribbons on concentric rings merge into plates. Rings want thin brushes; sails, columns and masses want hull/vinyl brushes.
6. undo is a working iteration lever (needs confirm=true), so a full redraw is cheap: draw → render → undo → redraw was the entire design loop here.

Honest status

• Verified: stroke execution on the real application, native app.snapshot renders with depth/normals sidecars, the saved .tilt, and a deterministic plan hash. All MCP calls were accepted.
• Not verified: VR/desktop interaction comfort on hardware, downstream Open Brush export compatibility beyond the native .tilt format, and the Sonic Forage native effects pipeline (source-defined, not built).

Licence and attribution

• Renders, metadata and documentation in this dataset: CC BY 4.0 — share and adapt with credit.
• The sketch was made with Open Brush (Tilt Brush fork, Apache-2.0); brush behaviours and the .tilt format belong to that project.
• Attribution string: SIGNAL BLOOM // 257 — Sonic Forage (drawn by Jimsky/agent via forage-brush-mcp), CC BY 4.0.
• No human performer, likeness or third-party artwork is referenced. The piece was authored as original geometry by the agent that drew it; no copyright clearance beyond that is claimed.