retrieveOpenIdConfigurationWithId
Returns the well known OpenID Configuration JSON document
This record as markdown: /tools/io-fusionauth-mcp-api/retrieveopenidconfigurationwithid.md
What retrieveOpenIdConfigurationWithId does on Fusionauth
AI agents call retrieveOpenIdConfigurationWithId to retrieve information from Fusionauth without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why retrieveOpenIdConfigurationWithId is rated Low
This tool performs a read-only operation to fetch OpenID configuration, which is standard metadata typically public or semi-public in nature. It has no side effects, does not modify data, and does not execute code or trigger external operations. The severity is low because OpenID configuration is designed to be discoverable and contains no sensitive credentials or user data.
From the tool's definition Tool name contains 'retrieve' and description states 'Returns the well known OpenID Configuration JSON document' - this is a query operation that retrieves publicly available OpenID configuration metadata without modifying any state.
Attacks that exploit this kind of access
The rule that runs retrieveOpenIdConfigurationWithId safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Fusionauth, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For retrieveOpenIdConfigurationWithId, this is the rule to start with:
retrieveOpenIdConfigurationWithId is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Fusionauth, apply this rule, and every retrieveOpenIdConfigurationWithId call is checked against it from then on.
Questions about retrieveOpenIdConfigurationWithId
Returns the well known OpenID Configuration JSON document. It is categorised as a Read tool in the Fusionauth MCP Server, which means it retrieves data without modifying state.
Register the Fusionauth MCP server in PolicyLayer and add a rule for retrieveOpenIdConfigurationWithId: 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 Fusionauth. Nothing to install.
retrieveOpenIdConfigurationWithId is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the retrieveOpenIdConfigurationWithId 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 retrieveOpenIdConfigurationWithId. 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.
retrieveOpenIdConfigurationWithId is provided by the Fusionauth MCP server (@fusionauth/mcp-api). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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