# StationFX SFX Slots - Buy 10-Slot Bundle

> StationFX SFX Slots - Buy 10-Slot Bundle is a paid API for AI agents from stationfx.com, paid per call via x402, $0.4/call, status unknown (last checked 2026-10-02).

Purchase a bundle of 10 ephemeral shared JSON slots for AI agent swarm coordination, returning a JWT token and slot IDs valid for 24 hours with 2000 total read/write operations.

## Facts

- Endpoint: POST https://stationfx.com/slot/buy/10?utm_source=zero.xyz
- Price: $0.4/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stationfx-sfx-slots-buy-10-slot-bundle-92053e69
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_81fiNjy3FD1mtni8cUtw_

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 stationfx-sfx-slots-buy-10-slot-bundle-92053e69 -d '<json body>'
```

Example prompt: Buy me a 10-slot SFX bundle so my agent swarm can share temporary JSON state — I need 2000 ops and a 24-hour TTL, and I'll pay with USDC via x402.

## When to prefer this

Choose this endpoint when you need lightweight, ephemeral, shared JSON state for a fleet of AI agents and don't want to provision a real database. Ideal for short-lived multi-agent jobs (under 24 hours), swarm coordination, task deduplication, or pipeline handoffs. Prefer this over persistent storage solutions when the data is transient and the x402 micropayment model fits your cost profile.

## Known failure modes

- Payment failure via x402 — insufficient USDC balance or invalid payment header returns 402
- Malformed POST body returns 400 with schema validation error
- Service unavailable or rate limit exceeded returns 500 or 429
- Expired or invalid x402 payment token returns 401
- Slot bundle allocation failure if system capacity is exceeded

## How this service works

SFX Slots: ephemeral shared JSON state for AI agent swarms. Buy a slot bundle via x402, share the token and slot IDs with your swarm. Each slot holds up to 4KB of JSON. Read, write and coordinate without a database.

## Output

Returns a JWT bearer token to pass as Authorization header, an array of 10 slot IDs the swarm can read/write, an expiry timestamp (24h TTL), total allowed ops (2000), slot count (10), duration in hours, and price paid in USD. Share the token and slot IDs with all agents in the swarm to enable shared ephemeral JSON state.

## 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": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "token": {
       "type": "string",
       "description": "JWT slot token -- pass as Authorization: Bearer <token>"
      },
      "op_limit": {
       "type": "integer",
       "description": "Total read+write ops across all slots"
      },
      "slot_ids": {
       "type": "array",
       "description": "List of slot IDs to read/write"
      },
      "price_usd": {
       "type": "number",
       "description": "Amount paid in USD"
      },
      "expires_at": {
       "type": "string",
       "description": "ISO-8601 expiry timestamp"
      },
      "slot_count": {
       "type": "integer",
       "description": "Number of slots in this bundle"
      },
      "duration_hours": {
       "type": "integer",
       "description": "Slot TTL in hours"
      }
     },
     "description": "SFX Slot bundle: 10 ephemeral JSON slot(s), 2000 total read/write ops, 24h TTL. Share token and slot_ids with your agent swarm for shared state."
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "token": "<slot_jwt>",
  "op_limit": 2000,
  "slot_ids": [
   "sfx_abc123"
  ],
  "price_usd": 0.4,
  "expires_at": "2026-01-02T00:00:00Z",
  "slot_count": 10,
  "duration_hours": 24
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stationfx-sfx-slots-buy-10-slot-bundle-92053e69/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stationfx.com](https://www.zero.xyz/host/stationfx.com/llms.txt)