Low Risk

openfec_lookup_calendar

Look up FEC calendar events, filing deadlines, and election dates. Use to find upcoming filing windows for a committee, locate when a federal election occurred, or scope FEC events by date range and category.

Risk signalsHigh parameter count (12 properties)

Part of the Openfec server.

openfec_lookup_calendar is read-only, but an agent in a loop can still rack up calls and cost. PolicyLayer caps every call before it runs. Live in minutes.

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AI agents call openfec_lookup_calendar to retrieve information from Openfec without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.

Even though openfec_lookup_calendar only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.

Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "openfec_lookup_calendar": {}
  }
}

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These attack patterns abuse exactly the kind of access openfec_lookup_calendar gives an agent. Each links to the full case and the policy that stops it:

Browse the full MCP Attack Database →

Every attack above starts with a tool call. PolicyLayer checks each one against your policy first, so openfec_lookup_calendar only ever does what you allow.

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Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.

What does the openfec_lookup_calendar tool do? +

Look up FEC calendar events, filing deadlines, and election dates. Use to find upcoming filing windows for a committee, locate when a federal election occurred, or scope FEC events by date range and category.. It is categorised as a Read tool in the Openfec MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on openfec_lookup_calendar? +

Register the Openfec MCP server in PolicyLayer and add a rule for openfec_lookup_calendar: 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 Openfec. Nothing to install.

What risk level is openfec_lookup_calendar? +

openfec_lookup_calendar is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit openfec_lookup_calendar? +

Yes. Add a rate_limit block to the openfec_lookup_calendar 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.

How do I block openfec_lookup_calendar completely? +

Set action: deny in the PolicyLayer policy for openfec_lookup_calendar. 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.

What MCP server provides openfec_lookup_calendar? +

openfec_lookup_calendar is provided by the Openfec MCP server (https://openfec.caseyjhand.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Openfec tool call.

Deterministic rules across all 9 Openfec tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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