Synchronity is an MCP server with 26 tools an agent can call, among them add_to_cart, apply_coupon, check_delegation. It answers at https://api.synchronity.app/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 6 of 6 times since 11 September 2026; the last check, on 24 October 2026, succeeded.
Shop connected e-commerce stores: search, compare, cart, and checkout with buyer approval.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
add_to_cart | Add a product variant (or base product) to an existing cart. Reuse the active cart_id from the chat history if one already exists. Only call create_cart first if no cart exists yet. Inputs: site_id, cart_id, product_id, quantity, variant_id, addons |
apply_coupon | Apply a discount or promotional code to the cart. Returns the updated cart with discount applied. Inputs: site_id, cart_id, code |
check_delegation | Poll for human approval of a delegation request. When status is "approved", returns the delegation_token to use as buyer_delegation_token in execute_checkout. Inputs: device_code |
compare_products | Compare products across multiple registered e-commerce sites simultaneously. Uses fail-open strategy: partial results from successful sites are returned even if some sites time out. Inputs: site_ids, query, category, min_price, max_price, in_stock |
create_cart | Create a new shopping cart for a specific site. Returns a cart_id. IMPORTANT: Reuse the active cart_id across multiple products in the same session. Do NOT call create_cart again if you already have a cart_id for this site in the chat histo Inputs: site_id, currency |
execute_checkout | Execute checkout for a cart to create an order. Requires a buyer delegation token (from user auth) and a shipping address. The order is created UNPAID (status "pending"). IMPORTANT — do NOT stop here or just hand the user the payment_url. I Inputs: site_id, cart_id, buyer_delegation_token, customer_name, customer_email, customer_phone |
get_active_cart | Retrieve the buyer's in-progress cart for a site (resumes a conversation). Call this before assuming a new cart when a shopping conversation continues or after a cart error. Returns the cart with its items rebuilt if the connector cart expi Inputs: site_id |
get_cart | Retrieve current cart contents, including items, pricing, discounts, and totals. The card already shows the line items and totals to the user, so keep your text reply to one brief sentence — do not re-list the cart contents. Inputs: site_id, cart_id |
get_order | Retrieve details for an order by its ID, including items, status, shipping, and tracking information. Orders are buyer-private — pass `buyer_delegation_token` (the delegation token from this buyer's checkout approval) so the gateway can con Inputs: site_id, order_id, buyer_delegation_token |
get_payment_methods | STEP 1 of the in-chat payment flow. Returns the payment channels available for an order (e.g. "mobile_money", "card") plus a `gateways` array of the enabled payment gateways (each with id, label, and its channels). When more than one gatewa Inputs: site_id, order_id |
get_payment_status | FINAL STEP of the in-chat payment flow. Returns the current PaymentSession for an order. Poll this (every ~5 seconds) after initiate_payment/submit_payment_otp until payment_status becomes "paid" or "processing" (success — the order is conf Inputs: site_id, order_id |
get_product | Retrieve detailed information about a specific product including variants, pricing, images, and availability. May also return `addons` — customer-selectable options defined by the store (e.g. engraving, gift wrap, size add-ons). When a prod Inputs: site_id, product_id |
get_product_reviews | 🔍 **RECOMMENDED STEP** — Fetch product reviews and authenticity consensus before making purchase decisions. Returns: average rating, trust score (0.0-1.0), review sentiment analysis, authenticity flags (fake reviews, seller issues, negative Inputs: site_id, product_id, limit, page |
initiate_payment | STEP 2 of the in-chat payment flow. Starts a payment session for an order and returns a PaymentSession with an `instruction` the agent renders in chat. REQUIRES a buyer_delegation_token — obtain it exactly like execute_checkout: call reques Inputs: site_id, order_id, channel, phone, provider, gateway |
list_orders | List recent orders for a site, optionally filtered by status (pending, processing, completed, cancelled, refunded). Orders are buyer-private — pass `buyer_delegation_token` (from this buyer's checkout approval); only that buyer's orders are Inputs: site_id, status, page, per_page, buyer_delegation_token |
list_sites | List all registered e-commerce sites. Use this first to find a site by name (e.g. "Pronto Partners") and get its site_id, which is required by all other tools. |
quick_checkout | Assemble checkout-ready cart(s) in ONE call for a multi-product (and optionally multi-store) request. Creates a cart per store, adds all items, and sets the shipping address — then returns the cart(s) with delivery options to choose. Use th Inputs: items, shipping_address, customer |
remove_from_cart | Remove a line item from the cart. Requires the item_id from the cart contents. Inputs: site_id, cart_id, item_id |
request_back_in_stock | Subscribe the buyer to a back-in-stock alert for an out-of-stock product. Use when the buyer asks to be notified/told/pinged when an item restocks ("notify me when X is back", "let me know when it's in stock"). Collect the buyer's email so Inputs: site_id, product_id, variant_id, email, product_title |
request_delegation | Start the human delegation (approval) flow needed for checkout/payment. PREFERRED: pass the buyer's `email` — the gateway emails them a 6-digit code and returns a device_code; ask the user for the code and call submit_delegation_otp. This k Inputs: site_id, email, scopes, marketing_opt_in |
search_products | Find products on a registered store. To BROWSE a store's catalog (open-ended requests like "what do they sell", "show me what's available"), call with NO query — this returns the store's products. To SEARCH, pass `query` (a product name/key Inputs: site_id, query, queries, category, min_price, max_price |
select_shipping_option | Select one of the shipping options returned by set_shipping_address. Binds the rate to the cart so the total includes shipping; call before execute_checkout so the hosted checkout opens pre-filled. Inputs: site_id, cart_id, option_id |
set_cart_quantity | Set a cart line's quantity (the server cart is the checkout source of truth, so this updates it live). Requires the item_id from the cart contents and the new absolute quantity. A quantity of 0 removes the line. Returns the updated cart car Inputs: site_id, cart_id, item_id, quantity |
set_shipping_address | Set the cart shipping destination (collected from the buyer) and return available shipping options with costs. Call after items are in the cart and before select_shipping_option. country_code is required; include postal_code/state for accur Inputs: site_id, cart_id, country_code, postal_code, state, city |
submit_delegation_otp | Submit the 6-digit code the buyer received by email (from request_delegation with an email) to approve the delegation in-chat. On success returns a delegation_token to use as buyer_delegation_token for checkout/payment. You cannot obtain th Inputs: site_id, device_code, code |
submit_payment_otp | STEP 3 (mobile_money only, when initiate_payment returned instruction.action == "submit_otp"). Submits the one-time password the buyer received to authorise the mobile-money charge. REQUIRES the same buyer_delegation_token used for initiate Inputs: site_id, order_id, otp, buyer_delegation_token |
Every block below points at https://api.synchronity.app/mcp. Pick your client and copy.
claude mcp add --transport http synchronity https://api.synchronity.app/mcp
{
"mcpServers": {
"synchronity": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://api.synchronity.app/mcp"]
}
}
}{
"mcpServers": {
"synchronity": {
"url": "https://api.synchronity.app/mcp"
}
}
}{
"servers": {
"synchronity": {
"type": "http",
"url": "https://api.synchronity.app/mcp"
}
}
}{
"context_servers": {
"synchronity": {
"url": "https://api.synchronity.app/mcp"
}
}
}{
"mcpServers": {
"synchronity": {
"serverUrl": "https://api.synchronity.app/mcp"
}
}
}{
"mcpServers": {
"synchronity": {
"url": "https://api.synchronity.app/mcp"
}
}
}name: Synchronity
version: 0.0.1
schema: v1
mcpServers:
- name: Synchronity
type: streamable-http
url: https://api.synchronity.app/mcp{
"mcpServers": {
"synchronity": {
"httpUrl": "https://api.synchronity.app/mcp"
}
}
}{
"mcpServers": {
"synchronity": {
"type": "http",
"url": "https://api.synchronity.app/mcp"
}
}
}{
"mcpServers": {
"synchronity": {
"url": "https://api.synchronity.app/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fapi.synchronity.app%2Fmcp&type=streamable_http&id=synchronity&name=Synchronity
It answered our last check on 24 October 2026 in 394 ms. Over 6 checks since 11 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
26, as returned by the server's own tools/list on 21 September 2026: add_to_cart, apply_coupon, check_delegation, compare_products, create_cart, execute_checkout, get_active_cart, get_cart, and 18 more.
It answered our last check on 24 October 2026 in 394 ms. Over 6 checks since 11 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://api.synchronity.app/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.themewireco. Endpoint host: api.synchronity.app. ARD identifier: urn:air:io.github.themewireco:mcp:synchronity.
First indexed 10 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.