Update an existing remote MCP server with new configuration and refresh its tools list. Use this tool to update the configuration of an existing remote MCP server connection. This allows you to change the server URL, update authentication credentials, or refresh environment variables. Perfect for...
Part of the DataGen server.
Free to start. No card required.
AI agents use updateRemoteMcpServer to create or modify resources in DataGen. 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 updateRemoteMcpServer 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 DataGen.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"updateRemoteMcpServer": {
"limits": [
{
"counter": "updateremotemcpserver_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full DataGen policy for all 20 tools.
These attack patterns abuse exactly the kind of access updateRemoteMcpServer 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 remote MCP server with new configuration and refresh its tools list. Use this tool to update the configuration of an existing remote MCP server connection. This allows you to change the server URL, update authentication credentials, or refresh environment variables. Perfect for: - Updating server URL when endpoints change - Refreshing API keys or authentication tokens - Updating environment variables or configuration - Migrating to new API versions or endpoints - Getting the latest available tools after config changes Requirements: - Server with the given name must already exist - New server URL must be accessible - New authentication credentials must be valid Input Requirements: - server_name: Name of the existing server (must match exactly and follow naming rules) - server_url: New remote server endpoint URL - env_args: Updated environment variables/configuration Naming Rules: - Use only alphanumeric characters (no spaces, underscores, or dashes) - Start with an uppercase letter - Use CamelCase for multiple words - Examples: 'GitHub', 'Slack', 'GoogleDrive', 'OpenAI' Returns: Updated server info with refreshed tools list. It is categorised as a Write tool in the DataGen MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the DataGen MCP server in PolicyLayer and add a rule for updateRemoteMcpServer: 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 DataGen. Nothing to install.
updateRemoteMcpServer 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 updateRemoteMcpServer 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 updateRemoteMcpServer. 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.
updateRemoteMcpServer is provided by the DataGen MCP server (kuoyusheng/datagendev). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 20 DataGen 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.