io.usefulapi/lemonsqueezy
REMOTE · LEMONSQUEEZY.USEFULAPI.IO · SCANNED SEP 20
MCP server for Lemon Squeezy — stores, products, orders, subscriptions, license keys.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security78
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token. View diagnostics → Pass
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 401, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
- The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents. View diagnostics → Partial
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability77
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 2102 tokens (~116/item across 18 items; 18 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 18 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 18 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
How do I install the io.usefulapi/lemonsqueezy MCP server?
io.usefulapi/lemonsqueezy is a hosted endpoint at https://lemonsqueezy.usefulapi.io/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · lemonsqueezy.usefulapi.io
claude mcp add --transport http io-usefulapi-lemonsqueezy 'https://lemonsqueezy.usefulapi.io/mcp'
{
"mcpServers": {
"io-usefulapi-lemonsqueezy": {
"url": "https://lemonsqueezy.usefulapi.io/mcp"
}
}
} {
"servers": {
"io-usefulapi-lemonsqueezy": {
"type": "http",
"url": "https://lemonsqueezy.usefulapi.io/mcp"
}
}
} [mcp_servers.io-usefulapi-lemonsqueezy] url = "https://lemonsqueezy.usefulapi.io/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"io-usefulapi-lemonsqueezy": {
"type": "remote",
"url": "https://lemonsqueezy.usefulapi.io/mcp",
"enabled": true
}
}
} openclaw mcp add io-usefulapi-lemonsqueezy --url 'https://lemonsqueezy.usefulapi.io/mcp' --transport streamable-http
mcp_servers:
io-usefulapi-lemonsqueezy:
url: "https://lemonsqueezy.usefulapi.io/mcp" {
"McpServers": {
"io-usefulapi-lemonsqueezy": {
"Transport": "http",
"Url": "https://lemonsqueezy.usefulapi.io/mcp"
}
}
} assistant mcp add io-usefulapi-lemonsqueezy -t streamable-http -u 'https://lemonsqueezy.usefulapi.io/mcp'
{
"mcpServers": {
"io-usefulapi-lemonsqueezy": {
"type": "http",
"url": "https://lemonsqueezy.usefulapi.io/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 20 Sept 26 0
- Stability: 0.97 → pass security
- 19 Sept 26 0
- Stability: pass → 0.97 functional
- 18 Sept 26 0
- Stability: 0.97 → pass security
- 17 Sept 26 0
- Stability: pass → 0.97 functional
- 15 Sept 26 0
- Stability: 0.97 → pass security
- 14 Sept 26 0
- Stability: pass → 0.97 functional
- 13 Sept 26 0
- Stability: 0.97 → pass security
- 12 Sept 26 0
- Stability: pass → 0.97 functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 20 Sept 2026 · Probed https://lemonsqueezy.usefulapi.io/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=usefulapi.io | CN=WE1,O=Google Trust Services,C=US | 14 Sept 2026 | 13 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 13e27f7f1dc9c8ca132267e5738a7089 |
| SANs: usefulapi.io, lemonsqueezy.usefulapi.io, *.lemonsqueezy.usefulapi.io | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of lemonsqueezy.usefulapi.io. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| io. | present | 57355 | 8 | Verified |
| usefulapi.io. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication Enforced and verified
The endpoint asked for a token and published valid RFC 9728 metadata describing how to get one.
| Result | Enforced and verified |
|---|---|
| Enforced | On tool calls |
| HTTP status | 200 |
WWW-Authenticate challenge Bearer realm="OAuth", resource_metadata="https://lemonsqueezy.usefulapi.io/.well-known/oauth-protected-resource/mcp", error="invalid_token", error_description="Missing or invalid access token"
Bearer realm="OAuth", resource_metadata="https://lemonsqueezy.usefulapi.io/.well-known/oauth-protected-resource/mcp", error="invalid_token", error_description="Missing or invalid access token"Protected resource metadata
| Document | https://lemonsqueezy.usefulapi.io/.well-known/oauth-protected-resource/mcp |
|---|---|
| Retrieved | Yes |
| Resource | https://lemonsqueezy.usefulapi.io/mcp |
| Authorisation server | https://lemonsqueezy.usefulapi.io |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://lemonsqueezy.usefulapi.io/mcp | Verified | 200 | |
| http (plaintext) | http://lemonsqueezy.usefulapi.io/mcp | Inconclusive | 401 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
lemonsqueezy_cancel_subscription Cancel subscription ~65
WRITE: Cancel a LIVE subscription. It remains active until the end of the current billing period, then moves to `cancelled`. This affects a real customer. API: DELETE /subscriptions/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| subscription_id | string | yes | Subscription id to cancel (required). |
No output schema declared.
No examples provided.
lemonsqueezy_create_checkout Create checkout ~179
WRITE: Create a hosted checkout / payment link for a store + variant. Returns the created checkout including its `url` (the shareable payment link). API: POST /checkouts.
| Name | Type | Req | Description |
|---|---|---|---|
| checkout_data | object | – | JSON:API checkout_data object (email, name, custom, discount_code, etc.). |
| checkout_options | object | – | JSON:API checkout_options object (embed, media, button_color, etc.). |
| custom_price | integer | – | Override price in cents (integer). |
| expires_at | string | – | ISO 8601 date-time when the checkout link expires. |
| product_options | object | – | JSON:API product_options object (name, description, redirect_url, etc.). |
| store_id | string | yes | Store id (required). |
| variant_id | string | yes | Variant id to sell (required). |
No output schema declared.
No examples provided.
lemonsqueezy_get_customer Get a customer ~67
Get a single customer by id. API: GET /customers/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| customer_id | string | yes | Customer id (required). |
| include | string | – | Comma-separated related resources to sideload (JSON:API include=), e.g. 'store,variant'. |
No output schema declared.
No examples provided.
lemonsqueezy_get_order Get an order ~67
Get a single order by id. API: GET /orders/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| include | string | – | Comma-separated related resources to sideload (JSON:API include=), e.g. 'store,variant'. |
| order_id | string | yes | Order id (required). |
No output schema declared.
No examples provided.
lemonsqueezy_get_store Get a store ~67
Get a single store by id. API: GET /stores/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| include | string | – | Comma-separated related resources to sideload (JSON:API include=), e.g. 'store,variant'. |
| store_id | string | yes | Store id (required). |
No output schema declared.
No examples provided.
lemonsqueezy_get_subscription Get a subscription ~67
Get a single subscription by id. API: GET /subscriptions/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| include | string | – | Comma-separated related resources to sideload (JSON:API include=), e.g. 'store,variant'. |
| subscription_id | string | yes | Subscription id (required). |
No output schema declared.
No examples provided.
lemonsqueezy_get_user Get authenticated user ~36
Get the currently authenticated user/account behind the API key. Good first call to confirm auth. API: GET /users/me.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
lemonsqueezy_list_customers List customers ~137
List customers, optionally filtered by store and/or email. API: GET /customers (filter[store_id], filter[email]).
| Name | Type | Req | Description |
|---|---|---|---|
| string | – | Filter to a customer email. | |
| include | string | – | Comma-separated related resources to sideload (JSON:API include=), e.g. 'store,variant'. |
| page_number | integer | – | Page number (JSON:API page[number]). Default 1. |
| page_size | integer | – | Results per page (JSON:API page[size], max 100). Default 10. |
| store_id | string | – | Filter to a single store id. |
No output schema declared.
No examples provided.
lemonsqueezy_list_discounts List discounts ~121
List discounts, optionally filtered to one store. API: GET /discounts (filter[store_id]).
| Name | Type | Req | Description |
|---|---|---|---|
| include | string | – | Comma-separated related resources to sideload (JSON:API include=), e.g. 'store,variant'. |
| page_number | integer | – | Page number (JSON:API page[number]). Default 1. |
| page_size | integer | – | Results per page (JSON:API page[size], max 100). Default 10. |
| store_id | string | – | Filter to a single store id. |
No output schema declared.
No examples provided.
lemonsqueezy_list_license_keys List license keys ~165
List license keys, optionally filtered by store, order, or product. API: GET /license-keys (filter[store_id], filter[order_id], filter[product_id]).
| Name | Type | Req | Description |
|---|---|---|---|
| include | string | – | Comma-separated related resources to sideload (JSON:API include=), e.g. 'store,variant'. |
| order_id | string | – | Filter to a single order id. |
| page_number | integer | – | Page number (JSON:API page[number]). Default 1. |
| page_size | integer | – | Results per page (JSON:API page[size], max 100). Default 10. |
| product_id | string | – | Filter to a single product id. |
| store_id | string | – | Filter to a single store id. |
No output schema declared.
No examples provided.
lemonsqueezy_list_orders List orders ~139
List orders, optionally filtered by store and/or buyer email. API: GET /orders (filter[store_id], filter[user_email]).
| Name | Type | Req | Description |
|---|---|---|---|
| include | string | – | Comma-separated related resources to sideload (JSON:API include=), e.g. 'store,variant'. |
| page_number | integer | – | Page number (JSON:API page[number]). Default 1. |
| page_size | integer | – | Results per page (JSON:API page[size], max 100). Default 10. |
| store_id | string | – | Filter to a single store id. |
| user_email | string | – | Filter to a buyer email. |
No output schema declared.
No examples provided.
lemonsqueezy_list_prices List prices ~120
List price models, optionally filtered to one variant. API: GET /prices (filter[variant_id]).
| Name | Type | Req | Description |
|---|---|---|---|
| include | string | – | Comma-separated related resources to sideload (JSON:API include=), e.g. 'store,variant'. |
| page_number | integer | – | Page number (JSON:API page[number]). Default 1. |
| page_size | integer | – | Results per page (JSON:API page[size], max 100). Default 10. |
| variant_id | string | – | Filter to a single variant id. |
No output schema declared.
No examples provided.
lemonsqueezy_list_products List products ~119
List products, optionally filtered to one store. API: GET /products (filter[store_id]).
| Name | Type | Req | Description |
|---|---|---|---|
| include | string | – | Comma-separated related resources to sideload (JSON:API include=), e.g. 'store,variant'. |
| page_number | integer | – | Page number (JSON:API page[number]). Default 1. |
| page_size | integer | – | Results per page (JSON:API page[size], max 100). Default 10. |
| store_id | string | – | Filter to a single store id. |
No output schema declared.
No examples provided.
lemonsqueezy_list_stores List stores ~99
List all stores in the account. API: GET /stores.
| Name | Type | Req | Description |
|---|---|---|---|
| include | string | – | Comma-separated related resources to sideload (JSON:API include=), e.g. 'store,variant'. |
| page_number | integer | – | Page number (JSON:API page[number]). Default 1. |
| page_size | integer | – | Results per page (JSON:API page[size], max 100). Default 10. |
No output schema declared.
No examples provided.
lemonsqueezy_list_subscription_invoices List subscription invoices ~169
List subscription invoices, optionally filtered by store, status, or refunded flag. API: GET /subscription-invoices (filter[store_id], filter[status], filter[refunded]).
| Name | Type | Req | Description |
|---|---|---|---|
| include | string | – | Comma-separated related resources to sideload (JSON:API include=), e.g. 'store,variant'. |
| page_number | integer | – | Page number (JSON:API page[number]). Default 1. |
| page_size | integer | – | Results per page (JSON:API page[size], max 100). Default 10. |
| refunded | boolean | – | Filter by refunded flag. |
| status | string | – | Filter by invoice status (e.g. paid, void, refunded). |
| store_id | string | – | Filter to a single store id. |
No output schema declared.
No examples provided.
lemonsqueezy_list_subscriptions List subscriptions ~220
List subscriptions with rich filtering by store, status, product, variant, customer, or buyer email. API: GET /subscriptions (filter[store_id], filter[status], filter[product_id], filter[variant_id], filter[customer_id], filter[user_email]).
| Name | Type | Req | Description |
|---|---|---|---|
| customer_id | string | – | Filter to a single customer id. |
| include | string | – | Comma-separated related resources to sideload (JSON:API include=), e.g. 'store,variant'. |
| page_number | integer | – | Page number (JSON:API page[number]). Default 1. |
| page_size | integer | – | Results per page (JSON:API page[size], max 100). Default 10. |
| product_id | string | – | Filter to a single product id. |
| status | string | – | Filter by subscription status. |
| store_id | string | – | Filter to a single store id. |
| user_email | string | – | Filter to a buyer email. |
| variant_id | string | – | Filter to a single variant id. |
No output schema declared.
No examples provided.
lemonsqueezy_list_variants List variants ~125
List variants (price/plan tiers), optionally filtered to one product. API: GET /variants (filter[product_id]).
| Name | Type | Req | Description |
|---|---|---|---|
| include | string | – | Comma-separated related resources to sideload (JSON:API include=), e.g. 'store,variant'. |
| page_number | integer | – | Page number (JSON:API page[number]). Default 1. |
| page_size | integer | – | Results per page (JSON:API page[size], max 100). Default 10. |
| product_id | string | – | Filter to a single product id. |
No output schema declared.
No examples provided.
lemonsqueezy_update_subscription Update subscription ~140
WRITE: Modify a LIVE subscription — change plan/tier (variant_id), cancel, pause/unpause, or set the billing anchor. This affects a real customer's billing. API: PATCH /subscriptions/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| billing_anchor | integer | – | Day of month (1-31) to anchor billing to. |
| cancelled | boolean | – | Set true to cancel, false to un-cancel. |
| pause | – | – | Pause object (mode, resumes_at), or null to unpause. |
| subscription_id | string | yes | Subscription id to update (required). |
| variant_id | integer | – | New variant id to switch the plan/tier to. |
No output schema declared.
No examples provided.
What is the io.usefulapi/lemonsqueezy MCP server?
io.usefulapi/lemonsqueezy is an MCP server listed in the public MCP registry as io.usefulapi/lemonsqueezy. MCP server for Lemon Squeezy, stores, products, orders, subscriptions, license keys. This page covers its hosted endpoint (https://lemonsqueezy.usefulapi.io/mcp).
Is the io.usefulapi/lemonsqueezy MCP server safe to use?
io.usefulapi/lemonsqueezy scores 85 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the io.usefulapi/lemonsqueezy MCP server expose?
io.usefulapi/lemonsqueezy exposes 18 tools: lemonsqueezy_get_user, lemonsqueezy_list_stores, lemonsqueezy_get_store, lemonsqueezy_list_products, lemonsqueezy_list_variants, and 13 more. Their descriptions and schemas cost roughly 2,102 tokens of context every time the server is loaded.
Does the io.usefulapi/lemonsqueezy MCP server require authentication?
Yes. io.usefulapi/lemonsqueezy asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.
Is the io.usefulapi/lemonsqueezy MCP server still maintained?
io.usefulapi/lemonsqueezy is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.