random_credit_card
Generate random credit card details (fake, for testing only).
This record as markdown: /tools/io-tinyfn-tinyfn/random-credit-card.md
What random_credit_card does on TinyFn
AI agents call random_credit_card to retrieve information from TinyFn without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
type | object | — | Card type: visa, mastercard, amex, discover, or null for random |
count | integer | — | Number of cards to generate |
Parameters from the server's own tool schema.
Why random_credit_card is rated Low
This tool generates synthetic/fake credit card data for testing purposes — it does not perform any financial transactions, access real data, or modify state. It is effectively a data-generation (read-like) operation. However, it carries medium severity because generated fake credit card numbers could be misused for fraud testing, form bypassing, or social engineering if an AI agent were to misuse the output.
From the tool's definition Generate random credit card details (fake, for testing only)
Attacks that exploit this kind of access
The rule that runs random_credit_card safely
PolicyLayer is an MCP gateway: it sits between your AI agents and TinyFn, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For random_credit_card, this is the rule to start with:
random_credit_card is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect TinyFn, apply this rule, and every random_credit_card call is checked against it from then on.
Questions about random_credit_card
Generate random credit card details (fake, for testing only). It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
random_credit_card accepts 2 parameters: type, count. The full parameter table on this page comes from the server's own tool schema.
Register the TinyFn MCP server in PolicyLayer and add a rule for random_credit_card: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches TinyFn. Nothing to install.
random_credit_card is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the random_credit_card rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for random_credit_card. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
random_credit_card is provided by the TinyFn MCP server (https://api.tinyfn.io/mcp/all/). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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