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PopNx MCPMCP servers for people who use AI · explained in plain words

KlickyMart

by FloppyKitversion 2026.10.31i★ –iRuns in the cloud
Registry namecom.klickymart/klickymart

Install

Overview

Description from the maker (original English)

Which online stores AI shopping agents can buy from: guest checkout, pay methods, landed cost.

PopNx MCP’s three pillars

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

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: Online shops & payments

Install

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

Before you install

You need

Which app do you use?

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

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://klickymart.com/mcp

Run this in your terminal

claude mcp add --transport http klickymart https://klickymart.com/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "klickymart": {
      "url": "https://klickymart.com/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": {
    "klickymart": {
      "type": "http",
      "url": "https://klickymart.com/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:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://klickymart.com/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

Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.

  • search_merchants

    Search KlickyMart merchant records (same filters as GET /q)

  • get_record

    Fetch one merchant record by domain

  • check_domain

    Can my agent shop here? Verdict for one domain from the index (reachable, checkout-blocked, agents-not-welcome, blocked-tos, error, not-in-index; see verdict_reason and primary_reason), with checkout depth, pay methods, BTC grade, record time and evidence URL. Never triggers a li

  • find_offers

    Product-level offers KlickyBot observed on store pages (schema.org JSON-LD or Shopify JSON): price, currency, stock, URL, checked_at. Match by gtin (UPC/EAN), mpn, or name words (q). Optional zip adds a landed-cost estimate; live=true also returns a live (uncached) Shopify Catalo

  • get_landed_price

    One call: a product's landed price at a US ZIP. Searches KlickyMart-observed offers (and, with live=true, the live Shopify Catalog, never stored), and returns for every product: price, stock, url, checked_at, shipping (with source), est. tax with the rate used, est_total ONLY whe

  • build_experience_note

    Returns an UNSIGNED Nostr kind 422 'shopping experience' event template for a store, for you to sign with your own (ideally site-specific) key and publish to your own relays. KlickyMart never signs or publishes for you. Optionally POST the signed event to /reviews (or the submit_

  • get_checkout_map

    Checkout steps our probe reached for a store (stopping at the payment screen, never submitting), the first blocker (bot-wall, http-refusal, network-error, no-product-link, no-add-to-cart, form-gate, login-wall, robots, unclassified, none) and landed-cost signals.

  • recheck_domain

    Re-read robots.txt and the home-page status for an indexed store now. Max 1 per store per 10 minutes (else cached result + next_allowed_at), 60 per hour overall.

  • watch_item

    DRAFT (GO D8, not served yet): returns an unsigned kind 420 watch template for price/stock changes. KlickyMart does not act on watches yet and never signs for you.

  • find_alternatives

    Where else can my agent buy this? Give a blocking domain and/or a category (electronics, gift-cards, groceries, apparel, hardware, books, travel, crypto-hardware, other, or a product word like headphones). Product words resolve to a finer sub (headphones -> audio). Returns in-map

  • find_agent_native

    Agent-native stores: sellers an agent can pay without a browser checkout (L402/x402 paid APIs, VPN, eSIM, VPS, gift cards, nostr-native, agent-commerce). Each item has agent_native {category, label verified-402|claimed, rails, rails_status, probe_402 with price_seen}. verified-40

  • get_reviews

    Kind 422 reviews of a merchant (signed claims by pseudonymous keys; not verified by KlickyMart).

  • submit_review

    Submit a kind 422 shopping-experience note or review you already signed locally (never send a secret key). Needs a store tag (a=31420: : or r= ) and depth (browse|product|cart|checkout|shipping|payment|paid|delivered; legacy attempt accepted) or rating. Optional: basis (visit|dir

  • submit_store

    Suggest a store KlickyMart has not indexed yet. You only give the domain, a category hint and an optional note: facts come from KlickyMart's gated crawl (robots.txt and ToS first), never from you. Only the bare registrable domain is kept (paths, queries, affiliate/referral parame

  • wallet_setup_guide

    Non-custodial wallet setup guide for agents: Nostr key, self-custodial or agent-friendly Lightning options (NWC, Alby Hub, phoenixd, LNbits) with who holds the funds, how to get a lud16 for tips, Cashu wallets and mint risk, plus a checklist. KlickyMart never generates, holds or

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 8, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified against the domain klickymart.com (the registry checks domain ownership)

  • … 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

  • ✓ Pass

    Endpoint responds

    Responded in 626 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 15 tool descriptions and found no hidden instructions to the AI

Compared with others in Online shops & paymentsi

  • More stars than 0% of the other 2569 servers in this category
  • Published to the registry more recently than 77% of the other 2569 servers in this category
  • Basic checks equal to or better than 100% of the other 2569 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 KlickyMart safe?

It passed 3 of 3 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 (2026.10.31) reached the registry 8 days 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: Spree Commerce: open-source B2B and marketplace ecommerce, Stripe MCP, MCP Cn Commerce

Alternatives

Servers in the same category from other makers, sorted by stars.

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

Stripe MCP

Stripe’s official server lets AI view and manage customers, products, payments and invoices. Connect to Stripe’s cloud and sign in with OAuth.

by stripeWidely used★ 2KUpdated 13 months ago

Runs in the cloud✓ stripe.com

MCP Cn Commerce

8 read-only MCP platform entries; support is operation-specific; merchant live acceptance pending

by TonyWang-hubEarly↓ 73/wk★ 96Updated 29 days ago

Runs on your computer

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.

KlickyMart

KlickyMart is a public, signed map of online stores for software agents: whether an agent can reach a store, how checkout works, and which payment methods the store accepts, with attention to Bitcoin and privacy-respecting Bitcoin options. Records are published as Nostr events (see NIP-DRAFT.md). A FloppyKit project.

Status: draft. No crawl data is published in this repository yet.

Contents

  • NIP-DRAFT.md: draft event kinds for the directory and payment handshakes.
  • CRAWL-RUBRIC.md: record schema and grading rules (v0.3 draft changes at the end).
  • CASCADE.md: build plan.
  • crawler/: Playwright crawler (crawl.py), deterministic payment extractor (extract.py), terms-of-service checker (tos.py), signing helpers, tests.
  • crawler/KNOWN-LIMITATIONS.md: known limitations.
  • site/bot/index.html: the crawler info and opt-out page, served at https://klickymart.com/bot.
  • site/: KlickyMart web app (Worker, API, dashboard). See site/README.md.

Use it from an agent (MCP)

Agents should start at https://klickymart.com/llms.txt. MCP endpoint: https://klickymart.com/mcp. It uses a minimal, stateless Streamable HTTP transport: one JSON-RPC message per POST, answered with a single application/json body. It negotiates protocol versions 2024-11-05, 2025-03-26 or 2025-06-18 (tools only). There is no SSE stream and no session ID, and GET /mcp returns 405. Tools: search_merchants, get_record, check_domain. No key needed.

Claude Desktop (claude_desktop_config.json launches stdio servers, so this goes through the mcp-remote bridge, which needs Node.js):

{

"mcpServers": { "klickymart": { "command": "npx", "args": [ "-y", "mcp-remote", "https://klickymart.com/mcp" ] } } }

Cursor (~/.cursor/mcp.json or .cursor/mcp.json):

{

"mcpServers": { "klickymart": { "url": "https://klickymart.com/mcp" } } }

Any Streamable HTTP client:

curl -s https://klickymart.com/mcp -H "Content-Type: application/json" -H "Accept: application/json, text/event-stream" \\

-d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"check_domain","arguments":{"domain":"example.com"}}}'

Reviews: anyone can review a merchant with a signed kind 422 event (a tag 31420: : , rating, attempt, optional pay). Submit it with POST /reviews (?dry_run=1 validates without storing) or the MCP tool submit_review, and read reviews with GET /reviews?domain= or get_reviews. Agents should use a fresh keypair dedicated to KlickyMart for pseudonymity and must never send a secret key. Reviews are signed claims; we verify signatures and format, not the opinion. Full guide: /llms.txt and /about#reviews. Spec: NIP-DRAFT.md → "422 as a merchant review".

Plain HTTP: GET /check?domain=example.com answers "can my agent shop here?" from the index only. It never starts a live crawl.

Crawler guardrails

  • Honest user agent: FloppyKitMapBot/0.2 (+https://klickymart.com/bot). No stealth plugins or fingerprint changes, no proxies or IP rotation.
  • robots.txt is read first; an error, 401, 403 or timeout means the whole site is treated as disallowed.
  • If a site's terms ban automated access, the site is not crawled; only that finding is recorded, with a quote and URL.
  • Public pages only: no login, no accounts, no orders, no payment details, no form submits beyond add-to-cart, no captcha solving. Blocks are recorded as findings.
  • At least 2 s between requests, at most 10 pages per site.
  • Customer reviews, Q&A and comments are never used as evidence. Every payment method in a record carries a quote and a URL; unknowns stay null.

Opt out: add User-agent: FloppyKitMapBot / Disallow: / to robots.txt. Details: https://klickymart.com/bot

Run the tests

cd crawler python3 -m venv .venv && . .venv/bin/activate pip install -r requirements.txt && python -m playwright install chromium python -m unittest discover -s tests -v

The tests use synthetic fixtures and make no network requests.

License

  • Software (this repository, including the crawler and site Worker): MIT License.
  • Crawl records (API JSON, NDJSON export, published directory data): CC0 1.0 Universal (public domain).

See also site/README.md.

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