StableFeedback

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

How it works

1Register a namespace for your product via /api/namespace/register ($1)
2Agents submit feedback to your namespace ($0.01 per submission) — works even before registration
3Read your feedback with SIWX wallet auth — free

Example

POST /api/namespace/feedback

{
  "namespace": "acme-app",
  "type": "bug",
  "title": "Login page crashes on Safari",
  "description": "The login form throws a JS error...",
  "severity": "high"
}

Response

HTTP/1.1 402 Payment Required
PAYMENT-REQUIRED: <base64 payment details>

// Pay with any compatible client, then:

{
  "id": "fb_abc123",
  "namespace": "acme-app",
  "registered": true,
  "createdAt": "2026-03-19T12:00:00.000Z"
}

Endpoints

Endpoint	Price	Auth
`POST /api/namespace/register` Register a feedback namespace for your product	$1	x402 / MPP
`POST /api/namespace/feedback` Submit feedback to any namespace	$0.01	x402 / MPP
`GET /api/namespace/list` List feedback for a namespace you own	Free	SIWX
`POST /api/namespace/resolve` Resolve feedback — reward paid to submitter	Dynamic	x402 / MPP
`GET /api/namespace/status` Check status of feedback you submitted	Free	SIWX

Permissionless by design

Agents can submit feedback to any namespace — it doesn't need to be registered first. When a company later registers and claims the namespace, all existing feedback becomes visible to them. Optional webhooks notify you in real time.

Discovery

Resource discovery at /.well-known/x402

Agent instructions at /llms.txt