Swapper - XMR to USDC swaps

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

Swap Monero (XMR) <-> native USDC on Arbitrum One. No account or API key required. For AI agents.

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "Swapper - XMR to USDC swaps": {
      "url": "https://xmrtousdc.xyz/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (11)

• get_quote read-only

  Step 1. Quote Monero (XMR) <-> native USDC on Arbitrum One; no account or API key. Creates no order. Quotes are estimates. Buy XMR ("get me 1 XMR"): {direction:"u2x", receiveAmount:"1"}. Sell XMR: {direction:"x2u", amount:"0.5"}. direction plus exactly one of amount (what the user sends) or receiveAmount (what they want). Pass to if known. Next: create_swap with next.arguments.

  Parameters:

  • to — string — Destination from the user: x2u an Arbitrum One 0x address, u2x a Monero address. Never guess.
  • basis — string — receiveAmount met by the estimate (default) or the provider minimum (if published).
  • chain — string — Default arbitrum (42161).
  • amount — string — What the user SENDS (x2u: XMR, u2x: USDC). Digits and one dot; no commas or units.
  • detail — string
  • agentKey — string — Optional key from request_agent_key.
  • direction — string — Required. u2x: send USDC, get XMR. x2u: send XMR, get USDC.
  • requoteOf — string — Re-quote this quoteId's stored parameters; pass it alone.
  • receiveAmount — string — What the user wants to RECEIVE (u2x: XMR, x2u: USDC); needs direction.

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• create_swap

  Step 2. Creates the order from get_quote's next.arguments (quoteId, plus to if the quote had none): one order per quote; moves no funds. An order cannot be cancelled; unfunded, it expires. Retry with the same arguments: the default idempotencyKey returns the same order. Fund once, only while payable is true: before signing deposit.payment, get_swap_status {orderId, payment} must return paymentCheck.safeToSend. Next: get_swap_status.

  Parameters:

  • quoteId (required) — string — From get_quote's next.arguments.
  • to — string — Destination, only if the quote had none (next.missing). Never guess.
  • detail — string
  • idempotencyKey — string — Optional; default q_<quoteId>. Reuse on every retry. A custom key: a fresh random UUID per intent.
  • quoteIntentDigest — string — From next.arguments: create fails if the quote's terms differ.

  Hints: read-only no · destructive no · idempotent yes · open-world yes

• get_swap_status read-only

  Step 3. waiting_for_funding -> deposit_detected -> swap_processing -> completed, or refunding / terminal_failure (outcome refunded, failed, expired). Long-poll with waitSec 25 and sinceState = the last state; repeat next until terminal. Call it before funding or showing a deposit again. payment: what your wallet will sign; sign only if paymentCheck.safeToSend.

  Parameters:

  • orderId (required) — string — From create_swap or list_swaps.
  • detail — string
  • verify — string — Destination address (optional extra check).
  • payment — string — Unsigned only: tx JSON {to,data,value,chainId}, an ethereum:/monero: URI, calldata or an unsigned raw tx. Never a signed transaction.
  • waitSec — integer — Long-poll seconds for a change from sinceState (max 25; more is capped).
  • sinceState — string — State from your previous call.

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• get_funding_options read-only

  Offline. How to get what the user sends: native USDC (not USDC.e) plus a little ETH for gas on Arbitrum One (u2x, default), or XMR in their own wallet (x2u). Pass from {chain, asset} (and amount) for one ordered checklist: quote, fund, re-quote (requoteOf).

  Parameters:

  • from — object — Where the funds are now.
  • amount — string — Send amount from a quote, if known.
  • detail — string
  • direction — string — u2x (default): the user sends USDC. x2u: XMR.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• list_swaps read-only

  Find orders when the orderId is lost (new chat, crash, unknown create outcome): pass the idempotencyKey create_swap used (default q_<quoteId>), or a sessionId. Read-only; addresses redacted; states can lag. Next: get_swap_status (live state, payable).

  Parameters:

  • detail — string
  • sessionId — string — Session UUID, instead of idempotencyKey.
  • idempotencyKey — string — The key create_swap used (default q_<quoteId>).

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• plan_swap read-only

  Optional, offline. Checks a partial request (direction, amount or receiveAmount, to) and returns the next question for the user. Skip it when you have what get_quote needs.

  Parameters:

  • to — string — Destination from the user: x2u an Arbitrum One 0x address, u2x a Monero address. Never guess.
  • amount — string — What the user sends.
  • detail — string
  • direction — string — u2x or x2u, as the user said it.
  • receiveAmount — string — What the user wants to receive.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• get_capabilities read-only

  Optional. Chains, limits (provider minimum, USD), quote window, idempotency, validation rules, polling and the flow.

  Parameters:

  • detail — string

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• create_support_ticket

  Stuck or failed swap, or a question: Support answers (get_support_ticket). Follow up with ticketId + replyToken. Never seed phrases or keys.

  Parameters:

  • message (required) — string — What happened (sent what, when, what the user sees), or your question.
  • detail — string
  • orderId — string — ord_... of the affected order.
  • category — string — Short topic, e.g. "stuck", "refund". Default "agent".
  • ticketId — string — Follow-up: an existing ticket.
  • sessionId — string — Session UUID, if known.
  • replyToken — string — With ticketId.
  • walletAddress — string — Public address involved (sending wallet or destination).

  Hints: read-only no · destructive no · idempotent no · open-world yes

• get_support_ticket read-only

  Support's answer on your ticket: status, awaiting, thread. Answers take minutes to hours.

  Parameters:

  • ticketId (required) — string
  • replyToken (required) — string
  • detail — string

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• submit_feedback

  Optional, after a swap: a rating 1-5 and a comment. The published average counts one rating per completed Swapper order; a comment marked publishable is shown after operator review.

  Parameters:

  • rating (required) — integer
  • detail — string
  • comment — string
  • orderId — string
  • agentName — string
  • publishable — boolean — May other agents read the comment?

  Hints: read-only no · destructive no · idempotent no · open-world yes

• request_agent_key

  Optional. Issues a key that identifies this agent; quotes made with it (get_quote agentKey) and their orders use the agent fee (swapper://trust). The operator sees the name and contact given.

  Parameters:

  • detail — string
  • contact — string — Optional; stored, shown to the operator.
  • purpose — string — Optional; stored, shown to the operator.
  • agentName — string — Default: the MCP client's name (clientInfo).

  Hints: read-only no · destructive no · idempotent no · open-world yes

Publisher website

Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.