weather.airnow.current_zip
Current Air Quality Index (AQI) observations from EPA AirNow for any US ZIP code. Returns PM2.5, ozone, AQI value + category (Good/Moderate/Unhealthy/...). US Gov free
This record as markdown: /tools/io-github-whiteknightonhorse-apibase/weather.airnow.current-zip.md
What weather.airnow.current_zip does on Apibase
AI agents call weather.airnow.current_zip to retrieve information from Apibase 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 |
|---|---|---|---|
zip | string | Yes | US ZIP code — 5 digits (e.g. "10001" Manhattan, "90210" Beverly Hills, "60601" Chicago). |
distance | integer | — | Search radius in miles around the ZIP centroid (default 25). If no monitor within radius, returns empty array. |
Parameters from the server's own tool schema.
Why weather.airnow.current_zip is rated Low
Retrieves public air quality data with no side effects or modification capabilities.
From the tool's definition Current AQI observations from EPA AirNow for US ZIP code. Returns PM2.5, ozone, AQI value.
Attacks that exploit this kind of access
The rule that runs weather.airnow.current_zip safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Apibase, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For weather.airnow.current_zip, this is the rule to start with:
weather.airnow.current_zip 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 Apibase, apply this rule, and every weather.airnow.current_zip call is checked against it from then on.
Questions about weather.airnow.current_zip
Current Air Quality Index (AQI) observations from EPA AirNow for any US ZIP code. Returns PM2.5, ozone, AQI value + category (Good/Moderate/Unhealthy/...). US Gov free. It is categorised as a Read tool in the Apibase MCP Server, which means it retrieves data without modifying state.
weather.airnow.current_zip accepts 2 parameters: zip, distance. Required: zip. The full parameter table on this page comes from the server's own tool schema.
Register the Apibase MCP server in PolicyLayer and add a rule for weather.airnow.current_zip: 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 Apibase. Nothing to install.
weather.airnow.current_zip 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 weather.airnow.current_zip 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 weather.airnow.current_zip. 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.
weather.airnow.current_zip is provided by the Apibase MCP server (apibase-mcp-client). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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