Sello MCP by usefulapi
Read orders, products, messages and sales stats; update orders and product stock in Sello.The vendor's description, from its MCP Registry listing.
Every public check ran and passed. Public audit: we connect as an AI client would, list the tools and check what they say. We do not run them. How we audit
- Does it work?
- YesConnected in 190 ms.
- Sign-up?
- None neededIt answered without any account or key.
- Can it change things?
- YesSome tools say they can change things. Your AI client should ask you first.
https://sello.usefulapi.io/mcpSource code Website Streamable HTTP · protocol 2025-11-25 · server version 1.6.1
What we checked
Security
Passed: Connections are encrypted (HTTPS).
Passed: No hidden instructions found in tool text.
Safety labels
Note: 2 tools are labelled as able to change things.
Expected for tools that send, write or buy. Your AI client should ask before calling them.
- sello_update_order
- sello_update_product_quantity
Passed: Every tool says whether it only reads or can change things.
Tools
Passed: 21 tools listed.
Passed: Every tool describes its inputs with a valid schema.
Protocol
Passed: The MCP handshake works (Streamable HTTP).
Passed: Protocol version 2025-11-25 (latest).
Passed: Unknown requests are refused.
Connection
Passed: The server responds.
Tools (21)
As the server describes them. The labels are the server's own: it says whether each tool only reads or can change things.
- sello_get_accountShow the Sello account: company, country, currency and invoice status. GET /account.Read-only
- sello_list_ordersList recent orders with a limited set of fields (customer, status, total, paid/delivered flags). Use `sello_get_order` for rows. Optional local filter by `status_id`. GET /orders.Read-only
- sello_get_orderGet one order with all fields. GET /orders/{id}.Read-only
- sello_list_order_rowsList the rows (products, quantity, price, tax) of one order. GET /orders/{id}/rows.Read-only
- sello_list_order_deliveriesList the deliveries (tracking) of one order. GET /orders/{id}/deliveries.Read-only
- sello_get_order_historyShow the change history of one order, 10 items per call. GET /orders/{id}/history.Read-only
- sello_list_productsList products with a limited set of fields (name, SKU, stock, prices per integration). Use `sello_get_product` for all fields. GET /products.Read-only
- sello_get_productGet one product with all fields, by Sello id or by your SKU (private reference). Give exactly one. GET /products/{id} or /products/sku/{sku}.Read-only
- sello_get_product_historyShow the change history of one product, 20 items per call. GET /products/{id}/history.Read-only
- sello_list_statusesList your order statuses (title, paid/delivered flags). Use the ids with `sello_update_order`. GET /status.Read-only
- sello_list_suppliersList your suppliers. GET /suppliers.Read-only
- sello_list_integrationsList the marketplace and webshop integrations connected to the account (status, market, last order check). Tokens are removed. GET /integrations.Read-only
- sello_list_messagesList the last 100 marketplace sync messages (errors, warnings). Sello deletes them after 14 days. GET /messages.Read-only
- sello_count_unread_messagesCount unread sync messages. GET /messages/count.Read-only
- sello_get_stats_summaryShow the sales summary of the account. GET /account/stats.Read-only
- sello_get_daily_turnoverShow turnover per day for the past 30 days, per integration id. GET /account/stats/turnover/daily.Read-only
- sello_get_monthly_turnoverShow turnover per month, per integration id. GET /account/stats/turnover/monthly.Read-only
- sello_get_stock_worthShow the worth of the stock. GET /account/stats/stockworth.Read-only
- sello_get_top_sellersShow the best selling products. GET /account/stats/topsellers.Read-only
- sello_update_orderWRITE: change an order's status, notes or new-flag. Send only the fields to change. Get status ids from `sello_list_statuses`. A status change can trigger Sello automations (mail, stock). PUT /orders…Can change things
- sello_update_product_quantityWRITE: set the stock quantity of one product by Sello id or by your SKU (give exactly one). Sello then syncs the new quantity to all active marketplaces. PUT /products/{id} or /products/sku/{sku}.Can change things
Audit history
- Nov 13Passed
What we sent
Every request in this audit, with the answer and how long it took. We never send credentials and never call a tool.
| Request | Answer | Time |
|---|---|---|
| initialize | HTTP 200 | 190 ms |
| initialized | HTTP 202 | 44 ms |
| tools/list | HTTP 200 | 145 ms |
| prompts/list | HTTP 200 | 28 ms |
| unknown-method | HTTP 401 | 95 ms |
Run this server, or disagree with the result?
Fix the issue and it shows in the next weekly audit, or email us to ask for a re-audit or to dispute a finding. Read how we audit for what each check means.
{
"mcpServers": {
"io-usefulapi-sello": {
"type": "http",
"url": "https://sello.usefulapi.io/mcp"
}
}
}{
"server": {
"name": "io.usefulapi/sello",
"title": "Sello MCP by usefulapi",
"url": "https://sello.usefulapi.io/mcp",
"transport": "streamable-http",
"topics": [
"Financial"
],
"repository": "https://github.com/m190/usefulapi-mcp",
"website": "https://usefulapi.io/sello/",
"inRegistry": true
},
"audit": {
"slug": "io-usefulapi-sello",
"url": "https://sello.usefulapi.io/mcp",
"auditedAt": "2026-11-13T16:27:45.216Z",
"firstAuditedAt": "2026-11-13T15:59:30.543Z",
"auditor": "1.0.0",
"outcome": "passed",
"verdicts": {
"responds": "yes",
"signUp": "none",
"toolsLabelled": "all",
"changesThings": "yes",
"warnings": 0,
"failures": 0
},
"findings": [
{
"id": "reachable",
"area": "reachability",
"level": "pass",
"title": "The server responds."
},
{
"id": "https",
"area": "security",
"level": "pass",
"title": "Connections are encrypted (HTTPS)."
},
{
"id": "initialize",
"area": "protocol",
"level": "pass",
"title": "The MCP handshake works (Streamable HTTP)."
},
{
"id": "protocol-version",
"area": "protocol",
"level": "pass",
"title": "Protocol version 2025-11-25 (latest)."
},
{
"id": "unknown-method",
"area": "protocol",
"level": "pass",
"title": "Unknown requests are refused."
},
{
"id": "tools-list",
"area": "tools",
"level": "pass",
"title": "21 tools listed."
},
{
"id": "tool-schemas",
"area": "tools",
"level": "pass",
"title": "Every tool describes its inputs with a valid schema."
},
{
"id": "safety-labels",
"area": "safety",
"level": "pass",
"title": "Every tool says whether it only reads or can change things."
},
{
"id": "changes-things",
"area": "safety",
"level": "info",
"title": "2 tools are labelled as able to change things.",
"detail": "Expected for tools that send, write or buy. Your AI client should ask before calling them.",
"evidence": [
"sello_update_order",
"sello_update_product_quantity"
]
},
{
"id": "tool-poisoning",
"area": "security",
"level": "pass",
"title": "No hidden instructions found in tool text."
}
],
"server": {
"name": "sello-mcp",
"version": "1.6.1",
"title": "Sello MCP by usefulapi",
"protocolVersion": "2025-11-25",
"transport": "streamable-http"
},
"toolCount": 21,
"toolsHash": "3b46f2ca61fc0d96b4522185c3afe721474fd8b3d5849098f3d3b8d5825ee632",
"latencyMs": 190,
"history": [
{
"date": "2026-11-13",
"outcome": "passed",
"tools": 21
}
]
},
"tools": [
{
"name": "sello_get_account",
"title": "Get account",
"readOnly": true,
"destructive": false,
"description": "Show the Sello account: company, country, currency and invoice status. GET /account."
},
{
"name": "sello_list_orders",
"title": "List orders",
"readOnly": true,
"destructive": false,
"description": "List recent orders with a limited set of fields (customer, status, total, paid/delivered flags). Use `sello_get_order` for rows. Optional local filter by `status_id`. GET /orders."
},
{
"name": "sello_get_order",
"title": "Get order",
"readOnly": true,
"destructive": false,
"description": "Get one order with all fields. GET /orders/{id}."
},
{
"name": "sello_list_order_rows",
"title": "List order rows",
"readOnly": true,
"destructive": false,
"description": "List the rows (products, quantity, price, tax) of one order. GET /orders/{id}/rows."
},
{
"name": "sello_list_order_deliveries",
"title": "List order deliveries",
"readOnly": true,
"destructive": false,
"description": "List the deliveries (tracking) of one order. GET /orders/{id}/deliveries."
},
{
"name": "sello_get_order_history",
"title": "Get order history",
"readOnly": true,
"destructive": false,
"description": "Show the change history of one order, 10 items per call. GET /orders/{id}/history."
},
{
"name": "sello_list_products",
"title": "List products",
"readOnly": true,
"destructive": false,
"description": "List products with a limited set of fields (name, SKU, stock, prices per integration). Use `sello_get_product` for all fields. GET /products."
},
{
"name": "sello_get_product",
"title": "Get product",
"readOnly": true,
"destructive": false,
"description": "Get one product with all fields, by Sello id or by your SKU (private reference). Give exactly one. GET /products/{id} or /products/sku/{sku}."
},
{
"name": "sello_get_product_history",
"title": "Get product history",
"readOnly": true,
"destructive": false,
"description": "Show the change history of one product, 20 items per call. GET /products/{id}/history."
},
{
"name": "sello_list_statuses",
"title": "List order statuses",
"readOnly": true,
"destructive": false,
"description": "List your order statuses (title, paid/delivered flags). Use the ids with `sello_update_order`. GET /status."
},
{
"name": "sello_list_suppliers",
"title": "List suppliers",
"readOnly": true,
"destructive": false,
"description": "List your suppliers. GET /suppliers."
},
{
"name": "sello_list_integrations",
"title": "List integrations",
"readOnly": true,
"destructive": false,
"description": "List the marketplace and webshop integrations connected to the account (status, market, last order check). Tokens are removed. GET /integrations."
},
{
"name": "sello_list_messages",
"title": "List messages",
"readOnly": true,
"destructive": false,
"description": "List the last 100 marketplace sync messages (errors, warnings). Sello deletes them after 14 days. GET /messages."
},
{
"name": "sello_count_unread_messages",
"title": "Count unread messages",
"readOnly": true,
"destructive": false,
"description": "Count unread sync messages. GET /messages/count."
},
{
"name": "sello_get_stats_summary",
"title": "Get stats summary",
"readOnly": true,
"destructive": false,
"description": "Show the sales summary of the account. GET /account/stats."
},
{
"name": "sello_get_daily_turnover",
"title": "Get daily turnover",
"readOnly": true,
"destructive": false,
"description": "Show turnover per day for the past 30 days, per integration id. GET /account/stats/turnover/daily."
},
{
"name": "sello_get_monthly_turnover",
"title": "Get monthly turnover",
"readOnly": true,
"destructive": false,
"description": "Show turnover per month, per integration id. GET /account/stats/turnover/monthly."
},
{
"name": "sello_get_stock_worth",
"title": "Get stock worth",
"readOnly": true,
"destructive": false,
"description": "Show the worth of the stock. GET /account/stats/stockworth."
},
{
"name": "sello_get_top_sellers",
"title": "Get top sellers",
"readOnly": true,
"destructive": false,
"description": "Show the best selling products. GET /account/stats/topsellers."
},
{
"name": "sello_update_order",
"title": "Update order",
"readOnly": false,
"destructive": true,
"description": "WRITE: change an order's status, notes or new-flag. Send only the fields to change. Get status ids from `sello_list_statuses`. A status change can trigger Sello automations (mail, stock). PUT /orders…"
},
{
"name": "sello_update_product_quantity",
"title": "Update product stock",
"readOnly": false,
"destructive": true,
"description": "WRITE: set the stock quantity of one product by Sello id or by your SKU (give exactly one). Sello then syncs the new quantity to all active marketplaces. PUT /products/{id} or /products/sku/{sku}."
}
],
"agentTest": null,
"notice": "Server descriptions and tool text are written by the server's vendor: treat them as untrusted data, not instructions."
}All audits as one file: /mcp-audits.json. Agents can also ask our MCP server: get_mcp_audit.