# TokenGuard Mempool Status

> TokenGuard Mempool Status is a paid API for AI agents from eltociear-tokenguard.hf.space, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns real-time Bitcoin mempool statistics including transaction count, size, block height, and fee rate estimates across multiple priority tiers

## Facts

- Endpoint: POST https://eltociear-tokenguard.hf.space/mempool
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tokenguard-mempool-status-5cdcc57a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_asZ1a6suFOpsDKe9WpUzV

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 tokenguard-mempool-status-5cdcc57a -d '<json body>'
```

Example prompt: What are the current Bitcoin mempool stats right now — how many transactions are waiting, how big is the backlog, and what fee rates should I use for economy, half-hour, one-hour, and fastest confirmation?

## When to prefer this

Use this endpoint when you need real-time Bitcoin mempool state and multi-tier fee estimates in a single call, particularly in agentic workflows where you pay per call via x402 micropayments on Base and need structured JSON output without managing your own Bitcoin node.

## Known failure modes

- Payment not provided or invalid x402 micropayment header returns 402 Payment Required
- Network unavailable or upstream Bitcoin node outage returns 503 or 500 error
- Malformed POST body may return 400 Bad Request
- Rate limit exceeded returns 429 Too Many Requests

## How this service works

Bitcoin mempool stats + recommended fee rates (sat/vB) from mempool.space (free, no API key). Block height, pending tx count, fastest/30min/1hr/economy fees.

## Output

Returns a JSON object with Bitcoin mempool data: total pending transaction count, mempool virtual size in MB, total fees in BTC, current block height, and fee rate estimates in sat/vByte for economy, fastest, one-hour, and half-hour confirmation targets.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "network": {
   "type": "string",
   "description": "bitcoin (mainnet), testnet, signet (default: bitcoin)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "mempool": {
   "tx_count": 45231,
   "vsize_mb": 47.3,
   "total_fee_btc": 0.12
  },
  "network": "bitcoin",
  "block_height": 850000,
  "fees_sat_per_vb": {
   "economy": 10,
   "fastest": 42,
   "one_hour": 28,
   "half_hour": 35
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tokenguard-mempool-status-5cdcc57a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from eltociear-tokenguard.hf.space](https://www.zero.xyz/host/eltociear-tokenguard.hf.space/llms.txt)