# Pyfile x402 One-Time Secret Dead Drop

> Pyfile x402 One-Time Secret Dead Drop is a paid API for AI agents from pyfile-agent.taile3ff35.ts.net:10000, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-20).

Stores a secret value (up to 16KB) and returns a single-use read URL that destroys the secret on first retrieval, enabling secure one-time credential handoff between agents.

## Facts

- Endpoint: POST https://pyfile-agent.taile3ff35.ts.net:10000/secret/drop?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pyfile-x402-one-time-secret-dead-drop-77fe5449
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uC-vdrqS4XH4REPNeQ15K

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 pyfile-x402-one-time-secret-dead-drop-77fe5449 -d '<json body>'
```

Example prompt: I need to hand off a database password to another agent without either of us keeping a copy — store it as a one-time dead drop and give me the single-use read URL so the receiving agent can pull it exactly once and it disappears.

## When to prefer this

Choose this endpoint when two agents need to exchange a sensitive value (credential, token, private key) exactly once without either party storing it persistently, and when a self-destructing one-time URL is the safest handoff mechanism. Prefer it over shared memory, environment variables, or persistent secret stores when the value must be consumed and deleted on first access.

## Known failure modes

- Payload exceeds 16KB limit — request rejected
- Payment not included or invalid — 402 response, secret not stored
- read_url already consumed — secret is gone, returns empty or error on second read
- Network or service timeout — secret may not have been stored
- Malformed request body — 400 error returned

## How this service works

One-read dead drop: hand a credential between two agents where neither should hold it first. POST the secret, pay once, receive a read_url that works exactly one time — the first read destroys the value before responding. Max 16KB.

## Output

Returns a JSON object with ok (boolean), a unique dead-drop id, and a read_url — a single-use HTTPS URL that, when GET-requested for the first time, returns the stored secret and immediately destroys it. Subsequent reads of the same URL return nothing.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json",
     "description": "Output payload format."
    },
    "example": {
     "type": "object",
     "required": [
      "ok",
      "id",
      "read_url"
     ],
     "properties": {
      "id": {
       "type": "string",
       "description": "Dead-drop id."
      },
      "ok": {
       "type": "boolean"
      },
      "note": {
       "type": "string"
      },
      "read_url": {
       "type": "string",
       "description": "One-time read URL; the first GET destroys the value."
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pyfile-x402-one-time-secret-dead-drop-77fe5449/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pyfile-agent.taile3ff35.ts.net:10000](https://www.zero.xyz/host/pyfile-agent.taile3ff35.ts.net%3A10000/llms.txt)