send21
by @fastdrop
Non-custodial payment drafts/pay links for BTC, USDC, USDT, EURC. Never holds keys.
Non-custodial payment drafts/pay links for BTC, USDC, USDT, EURC. Never holds keys. Official MCP Registry: io.github.send21io/mcp@1.0.0. Remote endpoint: https://send21.io/mcp
Problem it solves
Discoverable MCP server listed in the official MCP Registry.
How it's different
Remote MCP endpoint ingested from the official registry and probed by FastDrop.
Ingested from the official MCP Registry
FastDrop pulled this entry from the official MCP Registry as io.github.send21io/mcp and probed the endpoint. The maker did not submit it, so the outbound link is not endorsed
and the description is not theirs.
If this is your server, claim the listing to edit it and take ownership. The registry index lists everything else still awaiting a probe.
Claim this listingTools this endpoint exposes
Read directly from the endpoint on 6 Sept 2026. Not supplied by the maker.
get_transaction_templateGet the multi-output transaction template for a draft: Bitcoin Core walletcreatefundedpsbt arguments and Electrum/Sparrow pay-to-many CSV. The operator's wallet funds, reviews, and signs it — send21 c
get_fee_scheduleGet the public send21 fee schedule: tiered percent by payment size in USD, min/max fee, and dust limit. No authentication needed.
create_payment_requestCreate a payment request / checkout pay link (you are the RECEIVER asking to get paid). Price in any of 165 fiat currencies; the payer opens the returned payPath, picks one of the offered currencies (
list_address_bookList the account's saved addresses (label, address, network, direction: Sending = recipients the owner pays, Receiving = the owner's own addresses). Requires scope addressbook:read.
get_draftGet a payment draft by id, including amounts, fee, quote, and status. Requires scope drafts:read.
get_payment_requestGet a payment request by id: status (Open/Completed/Cancelled/Expired), pay path, offered currencies, and the underlying draft once the payer committed. Requires scope drafts:read.
get_rateGet the current exchange rate for an asset in a fiat currency (rate = fiat units per 1 whole asset unit, with source provenance). Assets: Btc, Usdc, Usdt, Eurc. 165 ISO-4217 fiat currencies are suppor
create_draftCreate a non-custodial payment draft (you are the SENDER paying a receiver address). Amount is either exact base units (sats for BTC, micro-units for stablecoins) via amountBaseUnits, or fiat-pegged v
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