Update an existing contact in Propstack CRM. Use this tool to: - Update contact details after a call - Change broker assignment - Add or remove tags (Merkmale) - Update GDPR status - Change contact rating or status Tag management options: - group_ids: replaces ALL tags with this list - add_group_...
Part of the Propstack server.
Free to start. No card required.
AI agents use update_contact to create or modify resources in Propstack. 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_contact 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 Propstack.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"update_contact": {
"limits": [
{
"counter": "update_contact_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Propstack policy for all 53 tools.
These attack patterns abuse exactly the kind of access update_contact 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 an existing contact in Propstack CRM. Use this tool to: - Update contact details after a call - Change broker assignment - Add or remove tags (Merkmale) - Update GDPR status - Change contact rating or status Tag management options: - group_ids: replaces ALL tags with this list - add_group_ids: adds tags without removing existing ones - sub_group_ids: removes specific tags Only provide the fields you want to change.. It is categorised as a Write tool in the Propstack MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Propstack MCP server in PolicyLayer and add a rule for update_contact: 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 Propstack. Nothing to install.
update_contact 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_contact 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_contact. 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_contact is provided by the Propstack MCP server (propstack-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 53 Propstack tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.