Tool detail

SYNTHORA

Returns current Bitcoin fee-rate tiers in sat/vB (fastest, half-hour, hour, economy, minimum) and current block height, sourced from mempool.space.

Categories: Onchain data

Use when

check current Bitcoin transaction fee rates by priority tier
get Bitcoin's current block height alongside fee estimates

Not for

not for any chain other than Bitcoin

Inputs

POST JSON body: { input: string (optional) }; schema gives no further field description

Admitted input schema

{
  "type": "object",
  "properties": {
    "input": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096
    }
  },
  "required": [],
  "additionalProperties": false
}

Endpoint

Method: POST
URL: https://api.hergertsynthora.com/v1/bitcoin-fees

Payment

Protocol: x402
Listed price: 0.01 USDC per call on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: POST https://api.hergertsynthora.com/v1/bitcoin-fees
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z