Recent earthquakes worldwide from USGS — magnitude, depth, location, PAGER impact alert (green→ red, distinct from raw magnitude), tsunami flag, felt reports and significance. Use for "recent / biggest earthquakes" or "was there a quake near X". Sorted by impact then magnitude. Args: min_magnitud...
Part of the Dynamic Feed server.
Free to start. No card required.
AI agents call earthquakes to retrieve information from Dynamic Feed 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 earthquakes 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.
{
"version": "1",
"default": "deny",
"tools": {
"earthquakes": {}
}
}See the full Dynamic Feed policy for all 50 tools.
These attack patterns abuse exactly the kind of access earthquakes gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Recent earthquakes worldwide from USGS — magnitude, depth, location, PAGER impact alert (green→ red, distinct from raw magnitude), tsunami flag, felt reports and significance. Use for "recent / biggest earthquakes" or "was there a quake near X". Sorted by impact then magnitude. Args: min_magnitude: minimum magnitude (default 2.5). period: hour | day | week | month (default day). limit: max results. tsunami_only: only quakes flagged with tsunami potential.. It is categorised as a Read tool in the Dynamic Feed MCP Server, which means it retrieves data without modifying state.
Register the Dynamic Feed MCP server in PolicyLayer and add a rule for earthquakes: 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 Dynamic Feed. Nothing to install.
earthquakes 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 earthquakes 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 earthquakes. 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.
earthquakes is provided by the Dynamic Feed MCP server (https://dynamicfeed.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 50 Dynamic Feed tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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