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send21.io

Provides Bitcoin payment management tools for creating payment requests, managing drafts, and accessing fee schedules and address books.

1 endpoint9 known toolsFirst detected September 6, 2026Last detected September 6, 2026

ENDPOINT 1

https://send21.io/mcp

No auth detected

MCP server metadata

Name
Send21.Api
Version
1.0.0.0
Capabilities
loggingtools

Known tools 9

get_transaction_template

Get the multi-output transaction template for a draft: Bitcoin Core walletcreatefundedpsbt arguments and Electrum/Sparrow pay-to-many CSV.

Potential side effects
get_fee_schedule

Get the public send21 fee schedule: tiered percent by payment size in USD, min/max fee, and dust limit.

Potential side effects
create_payment_request

Create a payment request / checkout pay link (you are the RECEIVER asking to get paid).

Potential side effects
list_address_book

List the account's saved addresses (label, address, network, direction: Sending = recipients the owner pays, Receiving = the owner's own addresses).

Inferred read-only
get_draft

Get a payment draft by id, including amounts, fee, quote, and status.

Potential side effects
get_payment_request

Get a payment request by id: status (Open/Completed/Cancelled/Expired), pay path, offered currencies, and the underlying draft once the payer committed.

Potential side effects
get_rate

Get the current exchange rate for an asset in a fiat currency (rate = fiat units per 1 whole asset unit, with source provenance).

Inferred read-only
create_draft

Create a non-custodial payment draft (you are the SENDER paying a receiver address).

Potential side effects
get_draft_status

Lightweight status snapshot of a draft: status (AwaitingPayment/Seen/Confirmed/Expired/Cancelled), paying txid, confirmations.

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.send21-api]
url = "https://send21.io/mcp"
enabled = true
Claude Code

.mcp.json

{
  "mcpServers": {
    "send21-api": {
      "type": "http",
      "url": "https://send21.io/mcp"
    }
  }
}
Claude Desktop

Settings → Connectors → Add custom connector

Name: send21-api
Remote MCP URL: https://send21.io/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "send21-api": {
      "url": "https://send21.io/mcp"
    }
  }
}
Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code 
{
  "servers": {
    "send21-api": {
      "type": "http",
      "url": "https://send21.io/mcp"
    }
  }
}
Generic MCP

Client-specific MCP configuration

{
  "name": "send21-api",
  "transport": "streamable-http",
  "url": "https://send21.io/mcp"
}
MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

TRUST AND VERIFICATION EVIDENCE

Loading Trust v2 evidence…

Checking the associated registrable domain. The BuiltWith key remains server-side.

Indexed

Evidence is source-attributed and does not guarantee that a third-party server is safe. Risk labels are conservative metadata heuristics.