# Pyfile Toolkit – Bitcoin Recommended Fee Rates

> Pyfile Toolkit – Bitcoin Recommended Fee Rates is a paid API for AI agents from pyfile-agent.taile3ff35.ts.net, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Returns current recommended Bitcoin transaction fee rates in satoshis per vByte (sat/vB) for different confirmation speed tiers

## Facts

- Endpoint: GET https://pyfile-agent.taile3ff35.ts.net/data/btc/fees
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pyfile-toolkit-bitcoin-recommended-fee-rates-b78e5430
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_s7SfwHr-hq6wgRpECOacL

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-toolkit-bitcoin-recommended-fee-rates-b78e5430
```

Example prompt: What are the current recommended Bitcoin fee rates right now — I need to know how many sat/vB to use for fast, medium, and slow confirmation?

## When to prefer this

Use this endpoint when you need a quick, no-parameter lookup of current Bitcoin fee rates in sat/vB and don't want to run your own mempool node or parse raw mempool data. Ideal for wallets, payment processors, or agents that need to dynamically set transaction fees before broadcasting. Prefer alternatives with richer mempool data if you need histogram-level detail or fee estimation for non-standard transaction sizes.

## Known failure modes

- Upstream fee estimation service unavailable — returns 5xx error
- Stale data if mempool conditions changed since last poll
- No query parameters supported, so no customization of output is possible
- Network timeout if the host Tailscale node is unreachable

## How this service works

Recommended Bitcoin fee rates (sat/vB)

## Output

Returns recommended Bitcoin fee rates (in sat/vB) across different priority tiers such as fastest, half-hour, one-hour, and economy — enabling callers to choose the appropriate fee for their desired confirmation speed.

## 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": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   }
  },
  "output": {
   "type": "object"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pyfile-toolkit-bitcoin-recommended-fee-rates-b78e5430/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pyfile-agent.taile3ff35.ts.net](https://www.zero.xyz/host/pyfile-agent.taile3ff35.ts.net/llms.txt)