B
StableKey — MPP Grade B
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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
- POST endpoint challenge missing digest parameter (SHOULD per spec)
Paid Operations (1)
POST /api/process dynamic
Create a paid CorridorKey video keying job. Requires a StableUpload rgbUrl + reserved output slots. hintUrl is optional — when omitted, stablekey generates a chroma hint inline (D6).
- Amount
- map[currency:USD max:5.00 min:0.05 mode:dynamic]
- Currency
- -
- Method
- Intent
- -
- 402 Declared
- Yes
Non-standard x-payment-info fields:
price: map[currency:USD max:5.00 min:0.05 mode:dynamic] protocols: [map[x402:map[]] map[mpp:map[currency:0x20c000000000000000000000b9537d11c60e8b50 intent:charge method:tempo]]]
Input Schema
| Field | Type | Required | Description |
|---|---|---|---|
| clientRequestId | string | No | |
| declared | object | Yes | |
| hintUrl | string (uri) | No | OPTIONAL StableUpload public URL of a coarse alpha hint mp4. When omitted, stablekey generates a chroma-key hint inline (works on clean studio plates). Bring your own SAM-derived mask via stablesam.dev for gnarly shots: subject wearing green, busy non-green BG props, multiple subjects, translucent FG. |
| options | object | No | |
| outputs | object | Yes | |
| rgbUrl | string (uri) | Yes | StableUpload public URL of the source RGB plate (mp4). |
| type | string | Yes |
Response Schema (200)
| Field | Type | Description |
|---|---|---|
| deduplicated | boolean | - |
| jobId | string | - |
| price | string | - |
| status | string | - |
| type | string | - |
Payment Methods
- Methods
- tempo (from challenge)
- Intents
- charge (from challenge)
- Currencies (discovery)
- -
- Currency (challenge)
- USDC.e on Tempo Mainnet Presto (Tempo Mainnet Presto)
- Multiple Challenges
- No
Recipients
- 0xF6fBf87BdfB523ACCB5d82727297713FB849ce44
Per-endpoint breakdown
- POST /api/process
- 0xF6fBf87BdfB523ACCB5d82727297713FB849ce44
Security
- TLS Version
- TLSv1.3
- Challenge ID Unique
- Yes
- Challenge ID Length
- 43
- Digest Binding
- -
Uptime
- Discovery
- Reachable (165ms)
- Challenge
- Reachable (184ms)
- Last Checked
Schema Completeness
- Paid Operations
- 1
- With Input Schema
- 1
- With Description
- 1
Documentation
- Homepage
- -
- API Reference
- -
- llms.txt
- -
Discovery
- OpenAPI URL
- https://stablekey.dev/openapi.json
- OpenAPI Version
- 3.1.0
- Service Version
- 0.1.0
- Document Size
- 38110 bytes
- Document Hash
- 86d2cd1fae9f8e27654db39d44a7ee8aa18bfdbcc48729dc6223f8565f7bb5e0
Version History (30 snapshots)
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Grade: C (64%) → B (79%)
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Grade: B (79%) → C (64%)
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Scan snapshots
| Date | Grade | Score | Response | Status |
|---|---|---|---|---|
| 2026-04-27 | B | 79% | 3130ms | Up |
| 2026-04-28 | B | 79% | 436ms | Up |
| 2026-04-29 | C | 64% | 211ms | Up |
| 2026-04-30 | C | 64% | 580ms | Up |
| 2026-05-01 | C | 64% | 278ms | Up |
| 2026-05-02 | C | 64% | 214ms | Up |
| 2026-05-03 | C | 64% | 268ms | Up |
| 2026-05-04 | C | 64% | 182ms | Up |
| 2026-05-05 | C | 64% | 318ms | Up |
| 2026-05-06 | C | 64% | 166ms | Up |
| 2026-05-07 | C | 64% | 296ms | Up |
| 2026-05-08 | C | 64% | 183ms | Up |
| 2026-05-09 | C | 64% | 303ms | Up |
| 2026-05-10 | C | 64% | 382ms | Up |
| 2026-05-11 | C | 64% | 189ms | Up |
| 2026-05-12 | C | 64% | 403ms | Up |
| 2026-05-13 | C | 64% | 201ms | Up |
| 2026-05-14 | C | 64% | 312ms | Up |
| 2026-05-15 | C | 64% | 347ms | Up |
| 2026-05-16 | C | 64% | 289ms | Up |
| 2026-05-17 | C | 64% | 219ms | Up |
| 2026-05-18 | C | 64% | 239ms | Up |
| 2026-05-19 | C | 64% | 179ms | Up |
| 2026-05-20 | C | 64% | 214ms | Up |
| 2026-05-21 | C | 64% | 198ms | Up |
| 2026-05-22 | B | 79% | 186ms | Up |
| 2026-05-23 | B | 79% | 193ms | Up |
| 2026-05-24 | B | 79% | 170ms | Up |
| 2026-05-25 | B | 79% | 230ms | Up |
| 2026-05-26 | B | 79% | 241ms | Up |