SmartRetry Payment Tools
com.smartretry/payment-toolssmartretry.comstreamable-httpv1.0.0Scanned
Free BIN, issuer, MCC and decline code lookups for card payments (Visa, Mastercard, Stripe, Adyen).
4 tools: 1 change things and 3 only read.
- Reads private data · 0
- Reads text others write · 4
- Can send data out · 0
- 1 finding
Anlyon alternative
1 of these tools change something. Run those 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.
4 tools
Changes things 1Claude Code: ask
lookup_decline_codeExplain why a card payment was declined or failed.Reads text others write1 finding
Why it is in this group
- The name "lookup_decline_code" says "lookup": a word for reading.
- The input takes a statement or command to run (input.code), which can change anything it can reach.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Findings
- Warn
The server marks "lookup_decline_code" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
What this check looks forMatched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; The name "lookup_decline_code" says "lookup": a word for reading.
Description, as the server wrote it Explain why a card payment was declined or failed. Accepts a decline code, response code, refusal reason or error message (for example "51", "05", "do_not_honor" or "insufficient funds") from card networks and processors such as Visa, Mastercard, Stripe and Adyen. Optionally narrow by provider.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
Only reads 3Show 3 read-only tools
lookup_binBIN / IIN lookup (card BIN checker).Reads text others writeNo findings
Why it is in this group
- The name "lookup_bin" says "lookup": 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 BIN / IIN lookup (card BIN checker). Returns the card network (Visa, Mastercard, Amex and others), card type (credit, debit, prepaid), card level, issuing bank and country for the first 6 to 8 digits of a card number. Use it to identify a card or where it was issued. Never pass a full card number.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
lookup_issuerFind card issuing banks by name, with their country, website and phone number.Reads text others writeNo findings
Why it is in this group
- The name "lookup_issuer" says "lookup": 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 "find" and "website": it reads web pages, which anyone can write.
Description, as the server wrote it Find card issuing banks by name, with their country, website and phone number. Accepts partial or misspelled names. Use it to confirm the bank behind a card or to find how to contact an issuer.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
lookup_mccMerchant category code (MCC) lookup.Reads text others writeNo findings
Why it is in this group
- The name "lookup_mcc" says "lookup": 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 Merchant category code (MCC) lookup. Pass a 4-digit MCC for its full definition (category group, high-risk flag, Visa and Mastercard definitions), or describe a business (for example "grocery store" or "software") to find the matching MCC.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- 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 private-data or outbound.
- Reads private data0
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write4
- 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.
The server marks "lookup_decline_code" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
What this check looks forMatched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; The name "lookup_decline_code" says "lookup": a word for reading.
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 payment-tools https://tools.mcp.smartretry.com/mcpclaude mcp add --transport http payment-tools https://tools.mcp.smartretry.com/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__payment-tools__lookup_bin",
"mcp__payment-tools__lookup_issuer",
"mcp__payment-tools__lookup_mcc"
],
"ask": [
"mcp__payment-tools__lookup_decline_code"
],
"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 payment-tools. Review it before you use it.
Capability tags behind 4 rules
- mcp__payment-tools__lookup_bin untrusted-input
- mcp__payment-tools__lookup_issuer untrusted-input
- mcp__payment-tools__lookup_mcc untrusted-input
- mcp__payment-tools__lookup_decline_code untrusted-input
Pin
Keep the decision: fail CI when the tools change, follow every change, or show a badge.
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/com.smartretry/payment-tools/verify?hash=b30fac6cebd47843adbdc080234a0fde45a997d554263bde8e70e617150a28b0" | jq -e '.changed == false'Pinned hash b30fac6cebd4, from Nov 3, 2026, 12:18 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/com.smartretry/payment-tools/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/com.smartretry/payment-tools)Source: MCP Registry. Synced Nov 3, 2026, 12:17 UTC.