create_subscription
Set up a recurring payment
This record as markdown: /tools/io-github-bbrainfrance-midas-protocol/create-subscription.md
What create_subscription does on MIDAS Protocol
AI agents use create_subscription to commit financial operations through MIDAS Protocol, usually the final step of a payment, billing, or trading workflow. A call moves real money.
| Parameter | Type | Required | Description |
|---|---|---|---|
amount | number | Yes | |
currency | string | Yes | |
frequency | string | Yes | |
recipientId | string | Yes |
Parameters from the server's own tool schema.
Why create_subscription is rated Critical
This tool establishes a recurring financial obligation (subscription payment), which directly commits financial resources on an ongoing basis. It falls squarely in the Financial category, and misuse by an AI agent could result in repeated unauthorized charges, making it critical severity.
From the tool's definition 'create_subscription' — 'Set up a recurring payment'
Attacks that exploit this kind of access
The rule that runs create_subscription safely
PolicyLayer is an MCP gateway: it sits between your AI agents and MIDAS Protocol, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For create_subscription, this is the rule to start with:
Any call to create_subscription is blocked until a human approves it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect MIDAS Protocol, apply this rule, and every create_subscription call is checked against it from then on.
Questions about create_subscription
Set up a recurring payment. It is categorised as a Financial tool in the MIDAS Protocol MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
create_subscription accepts 4 parameters: amount, currency, frequency, recipientId. Required: amount, currency, frequency, recipientId. The full parameter table on this page comes from the server's own tool schema.
Register the MIDAS Protocol MCP server in PolicyLayer and add a rule for create_subscription: 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 MIDAS Protocol. Nothing to install.
create_subscription is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the create_subscription 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 create_subscription. 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.
create_subscription is provided by the MIDAS Protocol MCP server (https://mcp.midasprotocol.org/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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