Update session.user_profile using standard UserProfile fields only. USE THIS WHEN: - the caller already has structured profile fields DO NOT PUT HERE: - city - checkin_date - checkout_date - raw numeric search constraints that belong in search_hotels Preferred profile fields include: - price_rang...
Part of the Waysway server.
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AI agents use update_user_profile to create or modify resources in Waysway. 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 update_user_profile 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 Waysway.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"update_user_profile": {
"limits": [
{
"counter": "update_user_profile_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Waysway policy for all 20 tools.
These attack patterns abuse exactly the kind of access update_user_profile 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.
Update session.user_profile using standard UserProfile fields only. USE THIS WHEN: - the caller already has structured profile fields DO NOT PUT HERE: - city - checkin_date - checkout_date - raw numeric search constraints that belong in search_hotels Preferred profile fields include: - price_range - budget_flexibility - relationships - travel_purpose - hotel_style - facilities_like - surroundings_like. It is categorised as a Write tool in the Waysway MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Waysway MCP server in PolicyLayer and add a rule for update_user_profile: 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 Waysway. Nothing to install.
update_user_profile 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 update_user_profile 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 update_user_profile. 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.
update_user_profile is provided by the Waysway MCP server (https://api.waysway.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 20 Waysway tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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