MoonClerk MCP by usefulapi
io.usefulapi/moonclerkusefulapi.iostreamable-httpv1.0.0Scanned
Read MoonClerk payment forms, customers (plans with subscriptions) and payments. Read-only.
6 tools: 6 only read.
- Reads private data · 1
- Reads text others write · 6
- Can send data out · 0
- No findings
Anlyon alternative
Run the operations that matter as governed actions.
Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.
Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.
Import an OpenAPI spec →Tools
Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.
6 tools
Only reads 6Show 6 read-only tools
moonclerk_get_customerOne MoonClerk customer (plan) by id with the full subscription, payment method, discount, checkout amounts (subtotal, fee, total, upfront amount, trial days) and custom field answe…Reads text others writeNo findings
Why it is in this group
- The name "moonclerk_get_customer" says "get": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it One MoonClerk customer (plan) by id with the full subscription, payment method, discount, checkout amounts (subtotal, fee, total, upfront amount, trial days) and custom field answers. The payer's management link and checkout token are never returned. Read-only. GET /customers/{id}.
Annotations the server declares
- title: Get customer (plan)
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: true
moonclerk_get_formOne payment form by id: title, currency, payment volume and checkout count.Reads text others writeNo findings
Why it is in this group
- The name "moonclerk_get_form" says "get": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it One payment form by id: title, currency, payment volume and checkout count. Read-only. GET /forms/{id}.
Annotations the server declares
- title: Get payment form
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: true
moonclerk_get_paymentOne MoonClerk payment by id with amounts (cents), Stripe fee, refunds, payer, payment method, Stripe references (charge, customer, invoice), coupon, custom fields and one-time chec…Reads text others writeNo findings
Why it is in this group
- The name "moonclerk_get_payment" says "get": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it One MoonClerk payment by id with amounts (cents), Stripe fee, refunds, payer, payment method, Stripe references (charge, customer, invoice), coupon, custom fields and one-time checkout data. The checkout token is never returned. Read-only. GET /payments/{id}.
Annotations the server declares
- title: Get payment
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: true
moonclerk_list_customersList MoonClerk customers, which the MoonClerk web app calls "Plans": each is one payer with their subscription (status, plan amount and interval, next payment date, trial and cance…Reads text others writeNo findings
Why it is in this group
- The name "moonclerk_list_customers" says "list": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- untrusted-inputThe description's first sentence says "list" and "web": it reads web pages, which anyone can write.
Description, as the server wrote it List MoonClerk customers, which the MoonClerk web app calls "Plans": each is one payer with their subscription (status, plan amount and interval, next payment date, trial and cancel dates), payment method (brand, last 4), coupon discount, custom form fields and the form they used. Filter by form, status (active, canceled, expired, past_due, pending, unpaid), sign-up date range or next-payment date range, e.g. past_due plans or renewals due this month. The payer's management link and checkout token are never returned. Read-only. GET /customers.
Annotations the server declares
- title: List customers (plans)
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: true
moonclerk_list_formsList the MoonClerk payment forms: id, title, currency, payment_volume (cents), successful_checkout_count and created/updated times.Reads text others writeNo findings
Why it is in this group
- The name "moonclerk_list_forms" says "list": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it List the MoonClerk payment forms: id, title, currency, payment_volume (cents), successful_checkout_count and created/updated times. Use the form ids to filter customers (plans) and payments. Read-only. GET /forms.
Annotations the server declares
- title: List payment forms
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: true
moonclerk_list_paymentsList MoonClerk payments (charges): date, status (successful, refunded, failed), amount, Stripe fee and amount refunded in cents, currency, payer name and email, payment method, for…Reads private dataReads text others writeNo findings
Why it is in this group
- The name "moonclerk_list_payments" says "list": a word for reading.
What it can reach
- private-dataThe description's first sentence says "list" and "email": it reads mail.
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- untrusted-inputThe description's first sentence says "list" and "email": it reads inbound email, which other people can write.
Description, as the server wrote it List MoonClerk payments (charges): date, status (successful, refunded, failed), amount, Stripe fee and amount refunded in cents, currency, payer name and email, payment method, form, customer id (recurring payments only), coupon and custom fields. Filter by form, customer, status or charge-date range, e.g. failed payments this month or refunds for one plan. Amounts are in cents. Read-only. GET /payments.
Annotations the server declares
- title: List payments
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: true
This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.
Exfil surface
Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.
No private-data, untrusted-input, outbound path in this server alone: no tool is tagged outbound.
- Reads private data1
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write6
- Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
- Can send data out0
- Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.
Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.
Findings
Matches of fixed checks, with the text they matched.
No check matched anything in these tool definitions. That is not a safety guarantee.
History
Changes to its tool definitions and to its remote endpoint, newest first.
No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.
Install
Pinned to version 1.0.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http moonclerk https://moonclerk.usefulapi.io/mcpclaude mcp add --transport http moonclerk https://moonclerk.usefulapi.io/mcpRun in a terminal.
Claude Code permissions
Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.
{
"permissions": {
"allow": [
"mcp__moonclerk__moonclerk_list_forms",
"mcp__moonclerk__moonclerk_get_form",
"mcp__moonclerk__moonclerk_list_customers",
"mcp__moonclerk__moonclerk_get_customer",
"mcp__moonclerk__moonclerk_list_payments",
"mcp__moonclerk__moonclerk_get_payment"
],
"ask": [],
"deny": []
}
}Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as moonclerk. Review it before you use it.
Capability tags behind 6 rules
- mcp__moonclerk__moonclerk_list_forms untrusted-input
- mcp__moonclerk__moonclerk_get_form untrusted-input
- mcp__moonclerk__moonclerk_list_customers untrusted-input
- mcp__moonclerk__moonclerk_get_customer untrusted-input
- mcp__moonclerk__moonclerk_list_payments private-data, untrusted-input
- mcp__moonclerk__moonclerk_get_payment untrusted-input
Pin
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Pin in CI
Fail a build when the tools you reviewed are not the tools the server serves today.
curl -s "https://anlyon.dev/api/v1/servers/io.usefulapi/moonclerk/verify?hash=9e4501045f2376831b43a604c1fe6fc1dd6d640dd1f9432db56cdf876d8e2812" | jq -e '.changed == false'Pinned hash 9e4501045f23, from Oct 24, 2026, 16:20 UTC.
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Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/io.usefulapi/moonclerk/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
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[](https://anlyon.dev/servers/io.usefulapi/moonclerk)Source: MCP Registry · repository. Synced Oct 24, 2026, 17:17 UTC.