Creative Lab Fidget Pixel API

# Stage 1: pixelize the source photo
curl https://api.meshy.ai/openapi/creative-lab/fidget-pixel/v1/prototype \
  -X POST \
  -H "Authorization: Bearer ${YOUR_API_KEY}" \
  -H 'Content-Type: application/json' \
  -d '{
    "image_url": "<your publicly accessible image url or base64-encoded data URI>",
    "type": "person"
  }'

# Stage 2: chain build off a succeeded prototype task
curl https://api.meshy.ai/openapi/creative-lab/fidget-pixel/v1/build \
  -X POST \
  -H "Authorization: Bearer ${YOUR_API_KEY}" \
  -H 'Content-Type: application/json' \
  -d '{
    "input_task_id": "019c4a1e-2b7d-7d03-8f6a-5c2e91f0a1b7",
    "options": {
      "shape": "square",
      "grid_size": 32,
      "piece_size_mm": 8,
      "color_count": 8,
      "piece_height_mm": 15
    },
    "output": {
      "format": "3mf"
    }
  }'

# Prototype
curl https://api.meshy.ai/openapi/creative-lab/fidget-pixel/v1/prototype/019c4a1e-2b7d-7d03-8f6a-5c2e91f0a1b7 \
  -H "Authorization: Bearer ${YOUR_API_KEY}"

# Build
curl https://api.meshy.ai/openapi/creative-lab/fidget-pixel/v1/build/019c4a2f-6e81-7b44-9a1d-0d7f3c5e2b98 \
  -H "Authorization: Bearer ${YOUR_API_KEY}"

curl --request DELETE \
  --url https://api.meshy.ai/openapi/creative-lab/fidget-pixel/v1/prototype/019c4a1e-2b7d-7d03-8f6a-5c2e91f0a1b7 \
  -H "Authorization: Bearer ${YOUR_API_KEY}"

curl -N https://api.meshy.ai/openapi/creative-lab/fidget-pixel/v1/build/019c4a2f-6e81-7b44-9a1d-0d7f3c5e2b98/stream \
-H "Authorization: Bearer ${YOUR_API_KEY}"

# List prototype tasks
curl https://api.meshy.ai/openapi/creative-lab/fidget-pixel/v1/prototype?page_size=10 \
  -H "Authorization: Bearer ${YOUR_API_KEY}"

# List build tasks
curl https://api.meshy.ai/openapi/creative-lab/fidget-pixel/v1/build?page_size=10 \
  -H "Authorization: Bearer ${YOUR_API_KEY}"

#!/usr/bin/env bash
set -euo pipefail

# Requires curl and jq. Point IMAGE_PATH at a local photo, or IMAGE_URL at a public one:
#   export MESHY_API_KEY=msy_...
#   export IMAGE_PATH=./portrait.jpg          # or: export IMAGE_URL=https://...
#   export PIXEL_TYPE=person                  # or: other
: "${MESHY_API_KEY:?export MESHY_API_KEY first}"
if [[ -z "${IMAGE_PATH:-}" && -z "${IMAGE_URL:-}" ]]; then
  echo "export IMAGE_PATH (local file) or IMAGE_URL (public url) first" >&2
  exit 1
fi
PIXEL_TYPE=${PIXEL_TYPE:-person}

BASE="https://api.meshy.ai/openapi/creative-lab/fidget-pixel/v1"
AUTH="Authorization: Bearer $MESHY_API_KEY"

# api METHOD URL [curl args...] -> prints the response body, non-zero on failure.
# Note we do not use -f/--fail: it discards the body, and the body is the only
# place the reason appears.
api() {
  local method=$1 url=$2 out http_code body
  shift 2
  out=$(curl --silent --show-error --max-time 60 --write-out $'\n%{http_code}' \
    -X "$method" "$url" -H "$AUTH" "$@") || return 1
  http_code=${out##*$'\n'}
  body=${out%$'\n'*}
  if ((http_code >= 400)); then
    echo "HTTP $http_code for $url: $body" >&2
    return 1
  fi
  printf '%s' "$body"
}

# Each task gets its own 40-minute budget.
poll() {
  local kind=$1 id=$2 delay=5 task_status deadline
  deadline=$(($(date +%s) + 2400))
  while :; do
    if (($(date +%s) >= deadline)); then
      echo "gave up waiting for $kind $id" >&2
      return 1
    fi
    task_status=$(api GET "$BASE/$kind/$id" | jq -r '.status')
    echo "$kind: $task_status"
    case "$task_status" in
    SUCCEEDED) return 0 ;;
    FAILED | CANCELED) return 1 ;;
    esac
    sleep "$delay"
    delay=$((delay * 2 > 30 ? 30 : delay * 2))
  done
}

# Build the request body in a file. A base64 data URI must never go on the
# command line or into an exported variable - a photo of any real size will
# exceed the OS argument limit.
BODY=$(mktemp)
trap 'rm -f "$BODY"' EXIT
if [[ -n "${IMAGE_PATH:-}" ]]; then
  # Declare the real type: the API accepts JPEG, PNG and WebP.
  case "$(printf '%s' "${IMAGE_PATH##*.}" | tr 'A-Z' 'a-z')" in
    png) MIME=image/png ;;
    webp) MIME=image/webp ;;
    *) MIME=image/jpeg ;;
  esac
  {
    printf '{"type":"%s","image_url":"data:%s;base64,' "$PIXEL_TYPE" "$MIME"
    base64 <"$IMAGE_PATH" | tr -d '\n'
    printf '"}'
  } >"$BODY"
else
  jq -n --arg t "$PIXEL_TYPE" --arg u "$IMAGE_URL" \
    '{type: $t, image_url: $u}' >"$BODY"
fi

# 1. Create the prototype task
PROTO_ID=$(api POST "$BASE/prototype" \
  -H 'Content-Type: application/json' --data-binary @"$BODY" | jq -r '.result')

# 2. Wait for the pixel-art image (show image_urls[0] to a user in production)
poll prototype "$PROTO_ID"

# 3. Create the build task (defaults: square pieces, 32x32 grid, 8 mm, 8 colors, 15 mm tall)
jq -n --arg p "$PROTO_ID" \
  '{input_task_id: $p, options: {shape: "square", grid_size: 32, piece_size_mm: 8, color_count: 8, piece_height_mm: 15}, output: {format: "3mf"}}' >"$BODY"
BUILD_ID=$(api POST "$BASE/build" \
  -H 'Content-Type: application/json' --data-binary @"$BODY" | jq -r '.result')

# 4. Wait for the pieces
poll build "$BUILD_ID"

# 5. Download the 3MF. This is a signed URL: no Authorization header,
#    and it stays valid for 3 days after the task finishes.
TASK=$(api GET "$BASE/build/$BUILD_ID")
curl --silent --show-error --fail --max-time 900 \
  -o fidget-pixel.3mf "$(jq -r '.model_urls["3mf"]' <<<"$TASK")"
echo "Done: fidget-pixel.3mf"