Produces a pitches overlaid on a strike zone using StatCast data Args: data: (pandas.DataFrame) StatCast pandas.DataFrame of StatCast pitcher data title: (str), default = '' Optional: Title of plot colorby: (str), default = 'pitch_type' Optional: Which category to color the mark with. 'pitch_type...
Part of the MLB Stats Server server.
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AI agents use create_strike_zone_plot to create or modify resources in MLB Stats Server. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call create_strike_zone_plot repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach MLB Stats Server.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"create_strike_zone_plot": {
"limits": [
{
"counter": "create_strike_zone_plot_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full MLB Stats Server policy for all 46 tools.
These attack patterns abuse exactly the kind of access create_strike_zone_plot gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Produces a pitches overlaid on a strike zone using StatCast data Args: data: (pandas.DataFrame) StatCast pandas.DataFrame of StatCast pitcher data title: (str), default = '' Optional: Title of plot colorby: (str), default = 'pitch_type' Optional: Which category to color the mark with. 'pitch_type', 'pitcher', 'description' or a column within data legend_title: (str), default = based on colorby Optional: Title for the legend annotation: (str), default = 'pitch_type' Optional: What to annotate in the marker. 'pitch_type', 'release_speed', 'effective_speed', 'launch_speed', or something else in the data. It is categorised as a Write tool in the MLB Stats Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the MLB Stats Server MCP server in PolicyLayer and add a rule for create_strike_zone_plot: 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 MLB Stats Server. Nothing to install.
create_strike_zone_plot is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the create_strike_zone_plot 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_strike_zone_plot. 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_strike_zone_plot is provided by the MLB Stats Server MCP server (etweisberg/mlb-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 46 MLB Stats Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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