Log a behavior signal (page view, login, signup, custom event) tied to a fingerprint session. Behavior data sharpens decisions on subsequent send_order_for_analysis calls.
AI agents use track_behavior_event to create or update resources in Mcp Ap2 — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Ap2 environment.
The tool writes/creates behavioral event records associated with a session. It is not purely read-only, but it doesn't execute code, delete data, or move money. The data logged influences downstream analysis ('sharpens decisions on subsequent send_order_for_analysis calls'), meaning misuse could manipulate fraud/risk scoring, giving it medium severity.
From the tool's definition 'Log a behavior signal (page view, login, signup, custom event) tied to a fingerprint session'
Documented attack patterns abuse exactly the kind of access track_behavior_event gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Ap2, and nothing reaches the server without passing your rules. This is the rule we recommend for track_behavior_event:
{
"version": "1",
"default": "deny",
"tools": {
"track_behavior_event": {
"limits": [
{
"counter": "track_behavior_event_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}track_behavior_event stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Log a behavior signal (page view, login, signup, custom event) tied to a fingerprint session. Behavior data sharpens decisions on subsequent send_order_for_analysis calls. It is categorised as a Write tool in the Mcp Ap2 MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for track_behavior_event: 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 Mcp Ap2. Nothing to install.
track_behavior_event 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 track_behavior_event 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 track_behavior_event. 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.
track_behavior_event is provided by the Mcp Ap2 MCP server (@codespar/mcp-ap2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Mcp Ap2, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
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