Create an incrementality experiment for a campaign. Sets up a geo-holdout, ghost ads, or propensity score matching experiment to causally measure DOOH advertising lift. WHEN TO USE: - Setting up a new A/B test before or during a campaign - Defining treatment and control DMAs for geo-holdout tests...
Part of the Trillboards DOOH Advertising server.
Free to start. No card required.
AI agents use create_experiment to create or modify resources in Trillboards DOOH Advertising. 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_experiment 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 Trillboards DOOH Advertising.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"create_experiment": {
"limits": [
{
"counter": "create_experiment_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Trillboards DOOH Advertising policy for all 74 tools.
These attack patterns abuse exactly the kind of access create_experiment 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.
Create an incrementality experiment for a campaign. Sets up a geo-holdout, ghost ads, or propensity score matching experiment to causally measure DOOH advertising lift. WHEN TO USE: - Setting up a new A/B test before or during a campaign - Defining treatment and control DMAs for geo-holdout tests - Configuring experiment parameters (holdout %, MDE, power) RETURNS: The created experiment object with experiment_id, status, and all parameters. EXAMPLE: create_experiment({ campaign_id: "camp_abc123", experiment_type: "geo_holdout", treatment_dmas: ["501", "504"], control_dmas: ["503", "505"], holdout_pct: 0.15, target_mde: 0.10 }). It is categorised as a Write tool in the Trillboards DOOH Advertising MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Trillboards DOOH Advertising MCP server in PolicyLayer and add a rule for create_experiment: 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 Trillboards DOOH Advertising. Nothing to install.
create_experiment 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_experiment 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_experiment. 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_experiment is provided by the Trillboards DOOH Advertising MCP server (https://api.trillboards.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 74 Trillboards DOOH Advertising tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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