Sablebolt swaps

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io.sablebolt/swapsv1.1.1 Domain verified

Account-free crypto swaps: assets, routes, limits, live quotes, address checks, swap status

Crypto & Web3

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Try it

Call this server's tools from your browser. Nothing to install.

https://api.sablebolt.io/mcp

Requests go through mcptry because browsers can't call most MCP servers directly. Header values are sent to the server for that request only and are never stored or logged.

Tool list from our last check. Connect live to refresh it.

create_swap

Creates the swap and returns the payment instruction: the one-time deposit address, the memo if the chain needs one, the exact amount in decimal and in base units with the decimals and token contract as listed by the liquidity partner, a wallet URI where a standard exists (BIP-21, ERC-681, Solana Pay, Monero, TON), and the status URL. Use it only when you control the wallet at fromAddress and will send the deposit yourself; for a person use swap_page_link. The deposit must come from fromAddress; there is no refund address — a swap that cannot be completed is handled by support from the swap id. Floating rate: the final amount is set when the deposit confirms.

tostring, required

asset slug to receive, e.g. btc

fromstring, required

asset slug you send, e.g. usdt-trc20

amountstring, required

decimal amount you send, as a string, within get_limits

toAddressstring, required

the receiving address for the `to` asset

fromAddressstring, required

the address you will send the deposit from (a wallet you control)

extraIdstring

memo / destination tag / payment ID for the receiving side, only where that asset needs one

fromExtraIdstring

the sending side's extra id, only if your wallet attaches one

This tool isn't marked read-only, so it may change something on the server or in an account you connected.

I understand, run it anyway

Install

Pick your client. Values in capitals, like YOUR_TOKEN, are yours to fill in.

Run in a terminal

claude mcp add --transport http swaps https://api.sablebolt.io/mcp

Tools (8)

create_swap

Argument	Type	Description
to*	string	asset slug to receive, e.g. btc
from*	string	asset slug you send, e.g. usdt-trc20
amount*	string	decimal amount you send, as a string, within get_limits
extraId	string	memo / destination tag / payment ID for the receiving side, only where that asset needs one
toAddress*	string	the receiving address for the `to` asset
fromAddress*	string	the address you will send the deposit from (a wallet you control)
fromExtraId	string	the sending side's extra id, only if your wallet attaches one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "from",
    "to",
    "amount",
    "fromAddress",
    "toAddress"
  ],
  "properties": {
    "to": {
      "type": "string",
      "description": "asset slug to receive, e.g. btc"
    },
    "from": {
      "type": "string",
      "description": "asset slug you send, e.g. usdt-trc20"
    },
    "amount": {
      "type": "string",
      "description": "decimal amount you send, as a string, within get_limits"
    },
    "extraId": {
      "type": "string",
      "description": "memo / destination tag / payment ID for the receiving side, only where that asset needs one"
    },
    "toAddress": {
      "type": "string",
      "description": "the receiving address for the `to` asset"
    },
    "fromAddress": {
      "type": "string",
      "description": "the address you will send the deposit from (a wallet you control)"
    },
    "fromExtraId": {
      "type": "string",
      "description": "the sending side's extra id, only if your wallet attaches one"
    }
  }
}

get_limits

Minimum and maximum amount for a route, in the asset you send.

read-only

Argument	Type	Description
to*	string	asset slug you receive, e.g. btc
from*	string	asset slug you send, e.g. usdt-trc20

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "from",
    "to"
  ],
  "properties": {
    "to": {
      "type": "string",
      "description": "asset slug you receive, e.g. btc"
    },
    "from": {
      "type": "string",
      "description": "asset slug you send, e.g. usdt-trc20"
    }
  }
}

get_quote

Floating estimate for a route and amount: amountTo, networkFee (taken out of the payout), receiveAmount, rate. The final amount is set when the deposit confirms.

read-only

Argument	Type	Description
to*	string
from*	string
amount*	string	decimal amount you send, as a string

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "from",
    "to",
    "amount"
  ],
  "properties": {
    "to": {
      "type": "string"
    },
    "from": {
      "type": "string"
    },
    "amount": {
      "type": "string",
      "description": "decimal amount you send, as a string"
    }
  }
}

get_swap_status

Status of one swap by id: stage (1 waiting … 5 done), deposit and payout addresses, amounts, both transaction hashes.

read-only

Argument	Type	Description
id*	string	swap id from the status page URL

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string",
      "description": "swap id from the status page URL"
    }
  }
}

list_assets

Every asset the swap form knows, with slug, ticker, network, confirmations, extra-id name and whether it is available right now.

read-only

No arguments.

Input schema (JSON)

{
  "type": "object",
  "properties": {}
}

list_routes

Every route with its own page (from/to slugs) and whether both sides are available right now.

read-only

No arguments.

Input schema (JSON)

{
  "type": "object",
  "properties": {}
}

swap_page_link

The page where the person completes the swap, with the amount prefilled. A swap for a person is completed by that person on the page: open the link, check the amount, both addresses and the memo on screen, then send the deposit from your own wallet. An agent that controls the sending wallet itself uses create_swap and pays the instruction it gets back.

read-only

Argument	Type	Description
to*	string
from*	string
amount	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "from",
    "to"
  ],
  "properties": {
    "to": {
      "type": "string"
    },
    "from": {
      "type": "string"
    },
    "amount": {
      "type": "string"
    }
  }
}

validate_address

Whether an address has the right format for an asset. Does not check who owns it or whether an exchange needs a memo.

read-only

Argument	Type	Description
asset*	string	asset slug
address*	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "asset",
    "address"
  ],
  "properties": {
    "asset": {
      "type": "string",
      "description": "asset slug"
    },
    "address": {
      "type": "string"
    }
  }
}

Security checkA100/100

We read every tool's name, description and inputs the way the model will, looking for instructions hidden from you. A clean result means no warning signs, not a guarantee. Scanned Nov 3, 2026.

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