OnceAsk

Name: OnceAsk
Author: rsb6061

by rsb6061version 1.0.0i★ –iRuns in the cloud

Registry nameio.github.rsb6061/onceask

Install

Overview

Description from the maker (original English)

MCP server for OnceAsk, the AI-native current-address layer for people and agents.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Other

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://onceask.com/_api/mcp

Run this in your terminal

claude mcp add --transport http onceask https://onceask.com/_api/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "onceask": {
      "url": "https://onceask.com/_api/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "onceask": {
      "type": "http",
      "url": "https://onceask.com/_api/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://onceask.com/_api/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account rsb6061, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Otheri

More stars than 0% of the other 32497 servers in this category
Published to the registry more recently than 43% of the other 32497 servers in this category
Basic checks equal to or better than 100% of the other 32497 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is OnceAsk safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 2 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Zoo MCP

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

OnceAsk MCP — Contacts + Current Mailing Addresses

Official MCP discovery repo for OnceAsk, a contacts and address-book MCP for AI agents that need a person's current mailing address, not just the last address stored in a contact record.

Addresses change. OnceAsk keeps them current.

OnceAsk helps an AI assistant resolve a known person to a current, permissioned delivery destination or request an update when the address is missing or stale.

MCP endpoint

https://onceask.com/_api/mcp

Transport: Streamable HTTP

Registry identity: io.github.rsb6061/onceask

What makes OnceAsk different

A conventional contacts integration can tell an agent who a person is and expose whatever fields are stored for that contact. OnceAsk focuses on the next problem: is this person's mailing address current and usable for this physical-delivery action?

OnceAsk can return an explicit delivery state instead of treating a saved address as automatically current:

authorized — the recipient is ready for an authorized delivery action.
permission_required — request recipient permission.
address_update_required — ask the recipient to confirm or update the current address.
ambiguous — ask the user which matching person they mean.
not_found — collect or create the recipient first.

Core MCP tools

`resolve_delivery`

Resolve a known person or contact to a current delivery state. This is the preferred primitive for AI agents that need to send something physical.

`request_delivery_permission`

Trigger the recipient-confirmation flow when an address is missing, stale, or not yet authorized.

`list_handwritten_cards`

List supported Handwrytten card designs and handwriting styles without exposing recipient data.

`send_handwritten_card`

Fulfill an authorized card delivery using an opaque delivery token. The preferred flow does not return the recipient's raw street address as ordinary model output.

Example agent workflows

"Send Aunt Theresa a birthday card."
"Mail this client a thank-you gift."
"Get John's current mailing address before we send the invitation."
"Ask Sarah for her new address."
"Send the document to Mike without relying on the address in our old CRM record."

The agent can identify the person from its existing context, then use OnceAsk to resolve the current delivery state.

Useful links

Live directory listings

These listings point to the same production endpoint and registry identity: io.github.rsb6061/onceask.

MCP Registry

The registry metadata is defined in server.json.

To verify the official registry listing:

curl "https://registry.modelcontextprotocol.io/v0.1/servers?search=io.github.rsb6061/onceask"

Website

https://onceask.com

Contact

requests@onceask.com

OnceAsk

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Zoo MCP

README from the maker

OnceAsk MCP — Contacts + Current Mailing Addresses

MCP endpoint

What makes OnceAsk different

Core MCP tools

resolve_delivery

request_delivery_permission

list_handwritten_cards

send_handwritten_card

Example agent workflows

Useful links

Live directory listings

MCP Registry

Website

Contact

`resolve_delivery`

`request_delivery_permission`

`list_handwritten_cards`

`send_handwritten_card`