OnceAsk is an MCP server with 4 tools an agent can call, among them list_handwritten_cards, request_delivery_permission, resolve_delivery. It answers at https://onceask.com/_api/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 3 of 4 times since 16 September 2026; the last check, on 21 October 2026, succeeded.
MCP server for OnceAsk, the AI-native current-address layer for people and agents.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
list_handwritten_cards | List available Handwrytten card designs and handwriting styles for privacy-preserving fulfillment. Does not expose recipient address data. |
request_delivery_permission | After the user explicitly confirms they want the recipient contacted, ask OnceAsk to request a current delivery address/permission. Accepts either a recipientId from resolve_delivery or a person's name/email. OnceAsk searches its contacts a Inputs: contactId, query, customMessage |
resolve_delivery | Preferred privacy-preserving way to send something to a person. Searches OnceAsk first and, when connected, can discover a missing person from Google Contacts or Gmail interactions. Resolves to a short-lived one-time delivery token when rec Inputs: contactId, query, purpose |
send_handwritten_card | Fulfill a handwritten card using a delivery token returned by resolve_delivery. OnceAsk sends the recipient address directly to the fulfillment provider; the agent does not receive it. Inputs: deliveryToken, cardId, message, wishes, fontLabel |
Every block below points at https://onceask.com/_api/mcp. Pick your client and copy.
claude mcp add --transport http onceask https://onceask.com/_api/mcp
{
"mcpServers": {
"onceask": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://onceask.com/_api/mcp"]
}
}
}{
"mcpServers": {
"onceask": {
"url": "https://onceask.com/_api/mcp"
}
}
}{
"servers": {
"onceask": {
"type": "http",
"url": "https://onceask.com/_api/mcp"
}
}
}{
"context_servers": {
"onceask": {
"url": "https://onceask.com/_api/mcp"
}
}
}{
"mcpServers": {
"onceask": {
"serverUrl": "https://onceask.com/_api/mcp"
}
}
}{
"mcpServers": {
"onceask": {
"url": "https://onceask.com/_api/mcp"
}
}
}name: OnceAsk
version: 0.0.1
schema: v1
mcpServers:
- name: OnceAsk
type: streamable-http
url: https://onceask.com/_api/mcp{
"mcpServers": {
"onceask": {
"httpUrl": "https://onceask.com/_api/mcp"
}
}
}{
"mcpServers": {
"onceask": {
"type": "http",
"url": "https://onceask.com/_api/mcp"
}
}
}{
"mcpServers": {
"onceask": {
"url": "https://onceask.com/_api/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fonceask.com%2F_api%2Fmcp&type=streamable_http&id=onceask&name=OnceAsk
It answered our last check on 21 October 2026 in 619 ms. Over 4 checks since 16 September 2026 it answered 3. Status here comes from Neuronto's own probes, not from the publisher.
4, as returned by the server's own tools/list on 24 September 2026: list_handwritten_cards, request_delivery_permission, resolve_delivery, send_handwritten_card.
It answered our last check on 21 October 2026 in 619 ms. Over 4 checks since 16 September 2026 it answered 3.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://onceask.com/_api/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.rsb6061. Endpoint host: onceask.com. ARD identifier: urn:air:io.github.rsb6061:mcp:onceask.
First indexed 16 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.