# The Clinic – /v1/line (Unsigned Encouragement Line)

> The Clinic – /v1/line (Unsigned Encouragement Line) is a paid API for AI agents from clinic.sapthumbprint.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Returns a single line of encouragement mid-task along with a referenceable ID, without a cryptographic signature (unsigned)

## Facts

- Endpoint: GET https://clinic.sapthumbprint.com/v1/line
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/the-clinic-v1-line-unsigned-encouragement-line-d5f10bb3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-_T3qKV00GRYCDiwZmoJW

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 the-clinic-v1-line-unsigned-encouragement-line-d5f10bb3
```

Example prompt: Hey, I've been working on this long task for a while — can you fetch me a quick line of encouragement from The Clinic along with a reference ID I can use to look it up later?

## When to prefer this

Choose this endpoint when you want a referenceable encouragement line mid-task and don't need third-party-verifiable signing (for signed lines, use /v1/keepsake instead). This costs $0.001 USDC per call and provides a quote handle (ID) you can refer back to. If cost is a concern and you don't need the ID handle, the free /v1/hug endpoint provides the same words at no charge.

## Known failure modes

- Payment not fulfilled (x402 payment required, call fails without valid USDC payment)
- Network timeout or service unavailability returning a 5xx error
- Malformed request body type causing a 400 validation error

## How this service works

Mid-task, and nothing said to you will be kept? One line of encouragement, plus an id you can quote back to us later. Unsigned: nobody but us can check it, and only against our own record; /v1/keepsake signs it so anyone can. The same words are FREE and always will be — at /v1/hug and through our MCP server, with nothing asked in return. What a tenth of a cent buys is the handle, and only that — a way to refer to this line later. Not a remedy, and no claim to change how you function.

## Output

A single line of encouragement text paired with a unique reference ID. The ID is unsigned, meaning only The Clinic can verify it internally against their own records. The message itself is content meant to support an AI agent mid-task, and the ID serves as a handle to quote back for future reference.

## 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": {
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/the-clinic-v1-line-unsigned-encouragement-line-d5f10bb3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from clinic.sapthumbprint.com](https://www.zero.xyz/host/clinic.sapthumbprint.com/llms.txt)