# StableFeedback

> StableFeedback is a paid API for AI agents from stablefeedback.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).

Collects and stores user feedback for a product namespace, paid per submission with no account or API key required.

## Facts

- Endpoint: POST https://stablefeedback.dev/api/namespace/feedback?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stablefeedback-fd83c1fd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VoH8mQA-v8RdqIAHtP8eI

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability stablefeedback-fd83c1fd -d '<json body>'
```

Example prompt: Submit this feedback to the 'morningbloom-coffee' namespace: 'The new ordering flow is confusing — too many steps before checkout.'

## When to prefer this

Choose this endpoint when you need the simplest possible feedback collection with no authentication overhead, accounts, or API keys — just pay $0.01 USDC per submission. Ideal for indie developers, quick prototypes, or any scenario where setting up a full feedback platform is overkill.

## Known failure modes

- Invalid or missing namespace returns a 400 error
- Insufficient USDC payment causes a 402 Payment Required response
- Empty or malformed feedback body rejected with validation error
- Network timeout results in uncertain submission state — retry may create duplicate

## How this service works

Pay-per-use feedback collection for any product. No API keys, no accounts.

## Output

A confirmation that the feedback was successfully recorded under the specified namespace, along with a submission identifier or status indicator.

## Example request

```json
{
 "type": "feedback",
 "title": "User interface feedback",
 "metadata": {
  "source": "qa-testing",
  "version": "1.0"
 },
 "severity": "low",
 "namespace": "test-product",
 "description": "The dashboard layout is intuitive and easy to navigate. The new search feature works well and helps users find information quickly. Overall positive experience with the current design."
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "namespace",
      "type",
      "title",
      "description"
     ],
     "properties": {
      "type": {
       "enum": [
        "bug",
        "feature",
        "feedback"
       ],
       "type": "string"
      },
      "steps": {
       "type": "array",
       "items": {
        "type": "string",
        "maxLength": 500
       },
       "maxItems": 20
      },
      "title": {
       "type": "string",
       "maxLength": 200,
       "minLength": 3
      },
      "actual": {
       "type": "string",
       "maxLength": 2000
      },
      "context": {
       "type": "string",
       "maxLength": 50000
      },
      "expected": {
       "type": "string",
       "maxLength": 2000
      },
      "metadata": {
       "type": "object",
       "properties": {},
       "additionalProperties": {}
      },
      "severity": {
       "enum": [
        "low",
        "medium",
        "high",
        "critical"
       ],
       "type": "string"
      },
      "namespace": {
       "type": "string",
       "maxLength": 30,
       "minLength": 3
      },
      "description": {
       "type": "string",
       "maxLength": 10000,
       "minLength": 10
      }
     },
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stablefeedback-fd83c1fd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stablefeedback.dev](https://www.zero.xyz/host/stablefeedback.dev/llms.txt)