B
StableFeedback
Preview responses and set spending limits for this service through use.mpp.land
Free budget controls, response samples, and reliability routing.
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 (3)
POST /api/namespace/register dynamic
Register a feedback namespace for your product ($1)
- Amount
- map[amount:1 currency:USD mode:fixed]
- Currency
- -
- Method
- Intent
- -
- 402 Declared
- Yes
Non-standard x-payment-info fields:
price: map[amount:1 currency:USD mode:fixed] protocols: [map[x402:map[]] map[mpp:map[currency:0x20c0000000000000000000000000000000000001 intent:charge method:tempo]]]
Input Schema
| Field | Type | Required | Description |
|---|---|---|---|
| description | string | No | |
| namespace | string | Yes | |
| webhookUrl | string (uri) | No |
Response Schema (200)
| Field | Type | Description |
|---|---|---|
| createdAt | string | - |
| existingFeedbackLinked | number | - |
| namespace | string | - |
| ownerWallet | string | - |
POST /api/namespace/feedback dynamic
Submit feedback to any namespace ($0.01) — namespace does not need to exist
- Amount
- map[amount:0.01 currency:USD mode:fixed]
- Currency
- -
- Method
- Intent
- -
- 402 Declared
- Yes
Non-standard x-payment-info fields:
price: map[amount:0.01 currency:USD mode:fixed] protocols: [map[x402:map[]] map[mpp:map[currency:0x20c0000000000000000000000000000000000001 intent:charge method:tempo]]]
Input Schema
| Field | Type | Required | Description |
|---|---|---|---|
| actual | string | No | |
| context | string | No | |
| description | string | Yes | |
| expected | string | No | |
| metadata | object | No | |
| namespace | string | Yes | |
| severity | string | No |
enum: low, medium, high, critical |
| steps | array | No | |
| title | string | Yes | |
| type | string | Yes |
enum: bug, feature, feedback |
Response Schema (200)
| Field | Type | Description |
|---|---|---|
| createdAt | string | - |
| id | string | - |
| namespace | string | - |
| registered | boolean | - |
POST /api/namespace/resolve dynamic
Resolve feedback — reward amount is forwarded as USDC on Tempo to the submitter
- Amount
- map[currency:USD max:2 min:0 mode:dynamic]
- Currency
- -
- Method
- Intent
- -
- 402 Declared
- Yes
Non-standard x-payment-info fields:
price: map[currency:USD max:2 min:0 mode:dynamic] protocols: [map[x402:map[]] map[mpp:map[currency:0x20c0000000000000000000000000000000000001 intent:charge method:tempo]]]
Input Schema
| Field | Type | Required | Description |
|---|---|---|---|
| feedbackId | string | Yes | |
| message | string | No | |
| rewardAmount | string | No |
Response Schema (200)
| Field | Type | Description |
|---|---|---|
| id | string | - |
| message | string | - |
| namespace | string | - |
| resolved | boolean | - |
| resolvedAt | string | - |
| resolvedBy | string | - |
| reward | object | - |
Payment Methods
- Methods
- tempo (from challenge)
- Intents
- charge (from challenge)
- Currencies (discovery)
- -
- Currency (challenge)
- USDC.e on Tempo (Tempo)
- Multiple Challenges
- No
Recipients
- 0x325bdF6F7efAB24a2210c48c1b64cAb2eAe1d430
Per-endpoint breakdown
- POST /api/namespace/feedback
- 0x325bdF6F7efAB24a2210c48c1b64cAb2eAe1d430
- POST /api/namespace/register
- 0x325bdF6F7efAB24a2210c48c1b64cAb2eAe1d430
Security
- TLS Version
- TLSv1.3
- Challenge ID Unique
- Yes
- Challenge ID Length
- 43
- Digest Binding
- -
Uptime
- Discovery
- Reachable (241ms)
- Challenge
- Reachable (983ms)
- Last Checked
Schema Completeness
- Paid Operations
- 3
- With Input Schema
- 3
- With Description
- 3
Documentation
- Homepage
- -
- API Reference
- -
- llms.txt
- -
Discovery
- OpenAPI URL
- https://stablefeedback.dev/openapi.json
- OpenAPI Version
- 3.1.0
- Service Version
- 0.1.0
- Document Size
- 9457 bytes
- Document Hash
- 9ebcb1527636c65787f4bf9b42747cedb764b3445014b987efb640a606f8ffea
Version History (2 snapshots)
Scan snapshots
| Date | Grade | Score | Response | Status |
|---|---|---|---|---|
| 2026-04-06 | B | 79% | 332ms | Up |
| 2026-04-07 | B | 79% | 994ms | Up |