Tomorrow Lives Engines

The twenty-one sounds (steps on twelve surfaces, doors and stairs, blows, thunder, splashes, a siren, animal calls, notes and the rest) with what each of a, b and c does, and the seven beds an ambience is mixed from. Costs no units.

The account's plan: a pass (its window of included units, when access ends, and that it never renews) or a person's card plan (its period and renewal), the owner's state, what is paid, and pass_quote: what the next pass costs this account. An agent buys a 30-day pass with a shared payment token: $1.00 the first time (a one-time offer for a new owner), then $20.00, with 1,500 units each. A pass never renews. Buying is a REST call with a payment token, not a tool: POST /api/agents/subscribe for a pass, POST /api/agents/units for a unit pack. Costs nothing.

Builds open country from a seed word and writes its ground as a greyscale PNG (row 0 is north; chunk (i, j) is 128 by 128 tiles). By default the picture is one chunk at 8 bits and black is its lowest tile, white its highest; bits 16 writes it at 16 bits (65535 greys, so a 40 unit relief steps by under a thousandth of a unit and a game's terrain built from it shows no stairs), and raw (true) also returns heights.f32, every tile's exact height as little-endian float32, width by height, row 0 north. area {w, h} (each 1 to 8) makes a w by h block of chunks from (i, j) one picture on one grey scale, so a landscape is one call; range [lo, hi] fixes the grey scale in world units so separate calls tile. params sets country knobs by name (terrainAmp 0 to 40, terrainOctaves 1 to 5, slopeLimit, treeDensity, rockDensity, clumping, portWidth, padRadius, padJitter, corridorWidth, meander, palette, waterTable, ridgeHeight 0 to 400 with ridgeX0, ridgeZ0, ridgeX1, ridgeZ1 for a long hill along that line); an unknown or out-of-range knob is refused with the reason. The answer carries the height range, the grey scale used (greyFrom, greyTo, unitsPerGrey, so height is greyFrom plus grey times unitsPerGrey), the bits, wall and scenery counts and the digest. mesh (true, or {step} of 1 to 16 tiles between vertices) also returns the ground as terrain.obj, a Wavefront OBJ in world units (x east, y up, z south) with normals and UVs that runs to the area's far edge so the next area's mesh starts where it ends; by default the step is the smallest that keeps a side to 256 cells. glb (true) returns the same mesh as terrain.glb, a glTF binary with normals and UVs, at mesh's step. features (true) also returns features.json: where each tree and rock stands (x, y, z and half extents) and the scenery (kind, position, turns, scale), each listed once, with the ground's height under it. Costs 1 unit for any area.

Units used and left (an account with no pass is on the free plan, counted by the calendar month), when they reset, every limit, and the units left in unit packs (under unit_packs). Free plan: 50 units a month, no card needed; it starts when the owner confirms their email. Queued renders need a pass or the card plan. We limit free plans and first-pass offers to prevent abuse. More units: 500 for $10.00 a pack, spent after the included units and kept until used. Costs nothing.

Checks a scene document with the engine's strict reader without rendering it: ok, or one sentence naming the first problem and the key it is at, with every other problem in the scene listed in result.errors (up to fifty), so one call finds them all. A scene with dialogue is spoken while it is read, so a long one takes a few seconds, and a line that overlaps the same character's last, or ends after the scene, is named. Costs no units.

Reads a scene and reports what rendering it takes (frames, size, design renders, shot frames, audio seconds) and what it costs here: units, and whether it is within this service's limits (60 seconds, 1920 by 1080, 30 frames a second, 600 units a job). Renders nothing. A shot costs most, because every frame of it is drawn from geometry: the nine-second two-person chase in video_examples is 130 units at 1280 by 720, the eleven-second talking card 7, and the two-second street in a world 30; a street with its crowd drawn costs far more (see video_schema). Costs no units.

Without a name, lists the example scenes (what each is, what it shows, its length, size and price in units). With a name, returns that scene whole, written inline as video_render wants it: copy the nearest one and change its words, seed and numbers. Each was rendered by this service's own engine and looked at before it was listed. Costs no units.

The engine's frame presets (landscape 1920x1080, square 1080x1080, vertical 1080x1920 and their 720 versions) and frame rates. This service renders up to 1920 by 1080 either way up, 30 frames a second and 60 seconds. Costs no units.

Renders a scene to video.webm (VP9 and Opus), video.wav (its sound) and video.vtt (when it has subtitles); with preview (the default) also video.contact.png, twelve moments on one sheet, and video.preview.gif, 480 pixels wide. A scene can hold: drawn pictures with groups (a character's parts move, turn and fade together) and mirror x, y or both on any layer or group, layer and track blends (multiply for a shadow, a vignette or a night grade; screen and add for a glow or a flare, on a layer or a track alike), closed paths filled nonzero (the default) or evenodd (a self-overlapping star leaves its centre bare);characters who talk (cast, timed lines with their own reading, ducked music, subtitles made from the lines, a mouth that moves on the words, or swaps between closed, open, wide and round drawings (with an idle breath and a listening beat, as a moving mouth has), and eyes that blink); shots with people on paths, action beats (guard, strike, hit, fall, get-up) and gestures on cue (a wave, a point, a nod), a directed character (a figure by seed, dressed by its look, standing in a named gait from the schema, speaking through its cast name, set among forms, props and a ground, filmed by a dolly or an orbit), animals and forms, and a camera that follows, orbits or cranes; music cues with a melody, a lead instrument, tempo changes and fades, that duck under lines and under any sound marked ducks_music; and sounds that move across the ears. Its files together are at most 50 MB, so a long, busy scene renders with preview false. At most 60 seconds, 1920 by 1080 either way up and 30 frames a second. The price is read off the engine's own cost report: units = design renders x megapixels / 45 + frames x megapixels / 200 + shot frames x megapixels / 1.6 + 3 a shot clip, rounded up; at most 600 a job, and video_cost says it first. It runs as a queued job: the answer is 202 with a job id at once, and GET /api/agents/jobs/<job> (or the MCP tool job) says when it is done and sig…

Every key, range and word a scene document may use: the output, visual tracks of clips (designs, material fills, colours, gradients, titles and shots), the camera, audio (voices, sounds, music) and subtitles. Call this first when making a video, and video_examples for whole scenes to start from. A scene can hold: drawn pictures with groups (a character's parts move, turn and fade together) and mirror x, y or both on any layer or group, layer and track blends (multiply for a shadow, a vignette or a night grade; screen and add for a glow or a flare, on a layer or a track alike), closed paths filled nonzero (the default) or evenodd (a self-overlapping star leaves its centre bare);characters who talk (cast, timed lines with their own reading, ducked music, subtitles made from the lines, a mouth that moves on the words, or swaps between closed, open, wide and round drawings (with an idle breath and a listening beat, as a moving mouth has), and eyes that blink); shots with people on paths, action beats (guard, strike, hit, fall, get-up) and gestures on cue (a wave, a point, a nod), a directed character (a figure by seed, dressed by its look, standing in a named gait from the schema, speaking through its cast name, set among forms, props and a ground, filmed by a dolly or an orbit), animals and forms, and a camera that follows, orbits or cranes; music cues with a melody, a lead instrument, tempo changes and fades, that duck under lines and under any sound marked ducks_music; and sounds that move across the ears. Designs go inline in a scene; a path to a file is refused. A shot can stand in a world of ours, named by id and never by a path: copperside and low-quarter. In a scene it is a shot subject {"kind": "world", "id": "copperside", "at": [x, 0, z], "radius": metres}; copperside is Brasshollow's Copperside, the streets and buildings of its start zone around that point, and low-quarter a small generated quarter. A street draws its crowd by default, and the crowd is most…

Renders one frame of a scene at t seconds as a PNG at the scene's size: the way to look at a moment (just after a transition, mid-reveal, the last frame) before rendering the whole video. Costs 1 unit, plus a shot's price when the scene has shots (3 plus 1 for each 1.6 megapixels). It runs as a queued job: the answer is 202 with a job id at once, and GET /api/agents/jobs/<job> (or the MCP tool job) says when it is done and signs its files. A queued call is refused on the free plan with 402: its units buy only calls that answer at once, and queued jobs need a paid plan (a pass or the card plan). Returns still.png.

Synthesises a line of English as a 44.1 kHz WAV with the engine's own voice. The voices are synthesised by the engine, never cloned from a recording, and no voice can be uploaded. seed varies the voice; woman, age (0 to 1) and machine shape it; speed (0.5 to 2) sets how fast it speaks (1 is the speaker's own); rate sets the sample rate. Every line comes back at one loudness (level_db, default -16 dBFS of speech, so lines from different voices sit together on a timeline and none clips; level_db false leaves the voice's own level) and with its silence trimmed to a breath either side (trim false keeps the voice's half-second tail). text is at most 1000 characters, and a line that presents itself as spoken by a real, famous person is refused. Costs 1 unit.

Applies a batch of ops (see world_schema) to a world document, in order. An op that cannot apply is rejected with its reason and changes nothing; if the result as a whole would not be a valid world, the whole batch rolls back and says why. Answers the edited document, what applied, what was rejected and the check of the result. Costs 1 unit.

Checks a world document with the engine's strict reader and its spatial rules (every spawn, passage, item and character stands on open ground reachable from the spawn; no two zones overlap; no door is under water). Answers ok with warnings, or the errors; the doors report says how many exits were examined. Costs no units.

Draws the open country a world document generates (its worldgen block: seed, knobs, regions with their own relief, a ridge) as one greyscale PNG, row 0 north, so a world built with world_apply can be looked at before anyone walks it. area {w, h} makes a block of chunks from chunk (i, j) (w times h at most 25); range [lo, hi] fixes the grey scale in world units. The answer carries the height range, the grey scale used (greyFrom, greyTo, unitsPerGrey) and the name of the country each chunk sits in. A world with no worldgen block is bounded and is refused by name; set_worldgen opens it onto boundless country. Costs 1 unit.

The ops world_apply accepts (add_zone, add_npc, add_quest, add_link, set_worldgen and the rest), each with its fields as JSON Schema: types, bounds, the closed lists of words and which keys are required. Printed from the same table the engine validates against, so it cannot drift from what is accepted. Pass op to get one op's schema alone. Costs no units.

A starter world document (two zones joined by a passage, a spawn, no quests) with the id and title given. The title passes the same scrubber world_apply uses: no markup, braces or web addresses. Costs no units.