# Seneschal XMR Fee Rate

> Seneschal XMR Fee Rate is a paid API for AI agents from api.seneschal.space, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Returns the current recommended Monero transaction fee in piconero per byte (and per kB) for optimal transaction inclusion.

## Facts

- Endpoint: GET https://api.seneschal.space/v1/q/xmr/fee
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-seneschal-space-0d384e98
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_azsGQt3nEHPPMctoEvkUl

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 api-seneschal-space-0d384e98
```

Example prompt: What's the current recommended Monero fee rate in piconero per byte so I can price my XMR transaction correctly?

## When to prefer this

Use this endpoint when you need a single, ready-to-use Monero fee recommendation in piconero and don't want to run your own Monero node or query a full RPC. Ideal for wallets, payment processors, or agents constructing XMR transactions that need a current fee estimate without complex calculations.

## Known failure modes

- Seneschal node temporarily out of sync — may return stale or unavailable fee data
- Network timeout if the underlying Monero node is unreachable
- 402 Payment Required if the x402 micropayment is not properly included
- Unexpected fee spikes during mempool congestion may make recommendations temporarily less reliable

## How this service works

Single-fact: recommended Monero per-byte fee in piconero (also exposed per-kB for convenience).

## Output

A single-fact response containing the recommended Monero fee in piconero per byte, and also expressed per kilobyte for convenience — useful for sizing transaction fees before broadcasting.

## Example request

```json
{
 "type": "http",
 "method": "GET",
 "queryParams": {}
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "chain": "monero",
  "as_of_ms": 1765532000000,
  "fee_per_kb_piconero": 20480000,
  "fee_per_byte_piconero": 20000
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-seneschal-space-0d384e98/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.seneschal.space](https://www.zero.xyz/host/api.seneschal.space/llms.txt)