C
StableDesign — MPP Grade C
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On-chain Activity
3
Total txs
3
7d txs
$0.03
7d volume
$0.03
Total volume
1
Unique payers
0
Unique clients
7-day activity
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Compliance Checks
All paid ops declare 402 response
MUST
10pt
All x-payment-info valid
MUST
10pt
Challenge has Cache-Control: no-store
MUST
5pt
Challenge digest on POST
SHOULD
3pt
Challenge has expires
SHOULD
3pt
Challenge has Problem Details
SHOULD
2pt
Challenge has required params
MUST
5pt
Challenge has WWW-Authenticate
MUST
5pt
Challenge returns 402
MUST
10pt
Correct Content-Type
MUST
5pt
Has Cache-Control on discovery
SHOULD
5pt
Has input schemas
SHOULD
5pt
Has llms.txt
SHOULD
5pt
Has /openapi.json at root
MUST
10pt
Has required top-level fields
MUST
10pt
Served over HTTPS
MUST
10pt
Uses standard categories
SHOULD
2pt
1 issue
- Endpoint GET /api/health returned 200 without payment
Paid Operations (9)
GET /api/health dynamic
Health check
- Amount
- map[amount:0 currency:USD mode:fixed]
- Currency
- -
- Method
- Intent
- -
- 402 Declared
- Yes
Non-standard x-payment-info fields:
price: map[amount:0 currency:USD mode:fixed] protocols: [map[x402:map[]] map[mpp:map[currency:0x20c000000000000000000000b9537d11c60e8b50 intent:charge method:tempo]]]
Parameters
| Name | In | Type | Required | Description |
|---|---|---|---|---|
| verbose | query | boolean | No | Include detailed service info |
Response Schema (200)
| Field | Type | Description |
|---|---|---|
| status | string | - |
| timestamp | string (date-time) | - |
GET /api/oauth/authorize dynamic
Start Canva OAuth flow (browser redirect)
Redirects the user to Canva's authorization page. Must be opened in a browser. Sets a PKCE verifier cookie for the callback.
- Amount
- map[amount:0 currency:USD mode:fixed]
- Currency
- -
- Method
- Intent
- -
- 402 Declared
- Yes
Non-standard x-payment-info fields:
price: map[amount:0 currency:USD mode:fixed] protocols: [map[x402:map[]] map[mpp:map[currency:0x20c000000000000000000000b9537d11c60e8b50 intent:charge method:tempo]]]
Parameters
| Name | In | Type | Required | Description |
|---|---|---|---|---|
| redirect_uri | query | string | No | Override the default OAuth redirect URI |
GET /api/oauth/callback dynamic
Canva OAuth callback
Handles the OAuth callback from Canva. Exchanges the authorization code for an access token and stores it server-side.
- Amount
- map[amount:0 currency:USD mode:fixed]
- Currency
- -
- Method
- Intent
- -
- 402 Declared
- Yes
Non-standard x-payment-info fields:
price: map[amount:0 currency:USD mode:fixed] protocols: [map[x402:map[]] map[mpp:map[currency:0x20c000000000000000000000b9537d11c60e8b50 intent:charge method:tempo]]]
Parameters
| Name | In | Type | Required | Description |
|---|---|---|---|---|
| code | query | string | Yes | Authorization code from Canva |
GET /api/user dynamic
Get authenticated Canva user profile
Returns the Canva user profile for the current OAuth session.
- Amount
- map[amount:0 currency:USD mode:fixed]
- Currency
- -
- Method
- Intent
- -
- 402 Declared
- Yes
Non-standard x-payment-info fields:
price: map[amount:0 currency:USD mode:fixed] protocols: [map[x402:map[]] map[mpp:map[currency:0x20c000000000000000000000b9537d11c60e8b50 intent:charge method:tempo]]]
Parameters
| Name | In | Type | Required | Description |
|---|---|---|---|---|
| fields | query | string | No | Comma-separated list of fields to return |
Response Schema (200)
| Field | Type | Description |
|---|---|---|
| team_id | string | - |
| user_id | string | - |
POST /api/designs/create dynamic
Create a new Canva design
Creates a design from a preset type (doc, email, presentation, whiteboard), custom dimensions (40-8000px), or with an uploaded asset. Requires Canva OAuth.
- Amount
- map[amount:0.010000 currency:USD mode:fixed]
- Currency
- -
- Method
- Intent
- -
- 402 Declared
- Yes
Non-standard x-payment-info fields:
price: map[amount:0.010000 currency:USD mode:fixed] protocols: [map[x402:map[]] map[mpp:map[currency:0x20c000000000000000000000b9537d11c60e8b50 intent:charge method:tempo]]]
Input Schema
| Field | Type | Required | Description |
|---|---|---|---|
| asset_id | string | No | Canva asset ID to insert into the design |
| height | integer | No | Custom height in pixels |
| preset | string | No |
Design preset type
enum: doc, email, presentation, whiteboard |
| title | string | No | Design title |
| width | integer | No | Custom width in pixels |
POST /api/designs/get dynamic
Get design details by ID
Retrieves metadata, URLs, and details for a specific Canva design. Requires Canva OAuth.
- Amount
- map[amount:0.010000 currency:USD mode:fixed]
- Currency
- -
- Method
- Intent
- -
- 402 Declared
- Yes
Non-standard x-payment-info fields:
price: map[amount:0.010000 currency:USD mode:fixed] protocols: [map[x402:map[]] map[mpp:map[currency:0x20c000000000000000000000b9537d11c60e8b50 intent:charge method:tempo]]]
Input Schema
| Field | Type | Required | Description |
|---|---|---|---|
| design_id | string | Yes | Canva design ID |
GET /api/designs/list dynamic
List user's Canva designs
Lists designs with optional filtering by ownership and sorting. Supports pagination via continuation token. Requires Canva OAuth.
- Amount
- map[amount:0.010000 currency:USD mode:fixed]
- Currency
- -
- Method
- Intent
- -
- 402 Declared
- Yes
Non-standard x-payment-info fields:
price: map[amount:0.010000 currency:USD mode:fixed] protocols: [map[x402:map[]] map[mpp:map[currency:0x20c000000000000000000000b9537d11c60e8b50 intent:charge method:tempo]]]
Parameters
| Name | In | Type | Required | Description |
|---|---|---|---|---|
| continuation | query | string | No | Pagination continuation token |
| ownership | query | string | No | Filter by ownership type |
| sort_by | query | string | No | Sort order for results |
POST /api/designs/export dynamic
Export a Canva design to file
Exports a design to PDF, JPG, PNG, GIF, PPTX, or MP4. Not all formats work with all design types — use PDF as the safe default. Async with automatic polling (up to 30s). Export URLs expire after 24 hours. Requires Canva OAuth.
- Amount
- map[amount:0.020000 currency:USD mode:fixed]
- Currency
- -
- Method
- Intent
- -
- 402 Declared
- Yes
Non-standard x-payment-info fields:
price: map[amount:0.020000 currency:USD mode:fixed] protocols: [map[x402:map[]] map[mpp:map[currency:0x20c000000000000000000000b9537d11c60e8b50 intent:charge method:tempo]]]
Input Schema
| Field | Type | Required | Description |
|---|---|---|---|
| design_id | string | Yes | Canva design ID |
| format | object | Yes |
POST /api/assets/upload dynamic
Upload an image or video asset to Canva
Uploads an asset by URL. Supports JPEG, PNG, GIF, WebP, HEIC, TIFF (50MB max) and MP4, WebM, MKV (500MB max). Async with automatic polling (up to 15s). Requires Canva OAuth.
- Amount
- map[amount:0.010000 currency:USD mode:fixed]
- Currency
- -
- Method
- Intent
- -
- 402 Declared
- Yes
Non-standard x-payment-info fields:
price: map[amount:0.010000 currency:USD mode:fixed] protocols: [map[x402:map[]] map[mpp:map[currency:0x20c000000000000000000000b9537d11c60e8b50 intent:charge method:tempo]]]
Input Schema
| Field | Type | Required | Description |
|---|---|---|---|
| name | string | Yes | Asset name |
| url | string (uri) | Yes | Public URL of the image or video to upload |
Payment Methods
- Methods
- -
- Intents
- -
- Currencies (discovery)
- -
- Multiple Challenges
- No
Security
- TLS Version
- TLSv1.3
- Challenge ID Unique
- -
- Challenge ID Length
- -
- Digest Binding
- -
Uptime
- Discovery
- Reachable (216ms)
- Challenge
- Reachable (173ms)
- Last Checked
Schema Completeness
- Paid Operations
- 9
- With Input Schema
- 4
- With Description
- 9
5 missing schema
- GET /api/health
- GET /api/oauth/authorize
- GET /api/oauth/callback
- GET /api/user
- GET /api/designs/list
Documentation
- Homepage
- -
- API Reference
- -
- llms.txt
- -
Discovery
- OpenAPI URL
- https://stabledesign.vercel.app/openapi.json
- OpenAPI Version
- 3.1.0
- Service Version
- 1.0.0
- Document Size
- 10415 bytes
- Document Hash
- a1f14410cd348ab0fc86fce7b35ac97f7ac946373074a734e68cf24431ad97a9
Version History (1 snapshots)
Scan snapshots
| Date | Grade | Score | Response | Status |
|---|---|---|---|---|
| 2026-05-06 | C | 67% | 551ms | Up |