calculate_date
Date arithmetic and difference calculations. Use this to find days between dates, add/subtract time, or get date info (weekday, unix timestamp). Parameters: op — 'info' (default), 'diff', or 'add'. date1 — Start date (ISO format, default: today). date2 — End date (for 'diff' operation). days — Da...
This record as markdown: /tools/com-gadgethumans-swarm-x402-middleware/calculate-date.md
What calculate_date does on X402 Middleware
AI agents call calculate_date to retrieve information from X402 Middleware 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 |
|---|---|---|---|
op | string | — | |
days | integer | — | |
date1 | string | — | |
date2 | string | — | |
years | integer | — | |
months | integer | — |
Parameters from the server's own tool schema.
Why calculate_date is rated Low
This tool performs pure date calculations and arithmetic with no side effects. It reads input parameters and returns computed date information (differences, offsets, metadata). No data is written, deleted, or transmitted externally. Misuse potential is minimal — worst case is an incorrect date calculation.
From the tool's definition Date arithmetic and difference calculations... find days between dates, add/subtract time, or get date info (weekday, unix timestamp)
Attacks that exploit this kind of access
The rule that runs calculate_date safely
PolicyLayer is an MCP gateway: it sits between your AI agents and X402 Middleware, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For calculate_date, this is the rule to start with:
calculate_date 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 X402 Middleware, apply this rule, and every calculate_date call is checked against it from then on.
Questions about calculate_date
Date arithmetic and difference calculations. Use this to find days between dates, add/subtract time, or get date info (weekday, unix timestamp). Parameters: op — 'info' (default), 'diff', or 'add'. date1 — Start date (ISO format, default: today). date2 — End date (for 'diff' operation). days — Days to add (for 'add' operation). months — Months to add (for 'add' operation). years — Years to add (for 'add' operation). It is categorised as a Read tool in the X402 Middleware MCP Server, which means it retrieves data without modifying state.
calculate_date accepts 6 parameters: op, days, date1, date2, years, months. The full parameter table on this page comes from the server's own tool schema.
Register the X402 Middleware MCP server in PolicyLayer and add a rule for calculate_date: 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 X402 Middleware. Nothing to install.
calculate_date 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 calculate_date 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 calculate_date. 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.
calculate_date is provided by the X402 Middleware MCP server (@gadgethumans/x402). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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