startWebAuthnLoginWithId

Start a WebAuthn authentication ceremony by generating a new challenge for the user

Part of the Mcp Api MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

// WHEN AI AGENTS USE THIS TOOL

AI agents invoke startWebAuthnLoginWithId to trigger processes or run actions in Mcp Api. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.

// WHY ENFORCE A POLICY ON STARTWEBAUTHNLOGINWITHID

startWebAuthnLoginWithId can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. Intercept enforces rate limits and validates arguments to keep execution within safe bounds.

// RECOMMENDED POLICY

Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.

io-fusionauth-mcp-api.yaml

tools:
  startWebAuthnLoginWithId:
    rules:
      - action: allow
        rate_limit:
          max: 10
          window: 60
        validate:
          required_args: true

See the full Mcp Api policy for all 310 tools.

// DETAILS

Tool Name startWebAuthnLoginWithId

Category Execute

MCP Server Mcp Api MCP Server

Risk Level High

// MORE MCP API TOOLS

Destructive cancelActionWithId Destructive changePasswordWithId Destructive deleteAPIKeyWithId Destructive deleteApplicationRoleWithId Destructive deleteApplicationWithId Destructive deleteConnectorWithId Destructive deleteConsentWithId Destructive deleteEmailTemplateWithId

View all 310 tools →

// RELATED READING

// FAQ

What does the startWebAuthnLoginWithId tool do? +

Start a WebAuthn authentication ceremony by generating a new challenge for the user. It is categorised as a Execute tool in the Mcp Api MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on startWebAuthnLoginWithId? +

Add a rule in your Intercept YAML policy under the tools section for startWebAuthnLoginWithId. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Mcp Api MCP server.

What risk level is startWebAuthnLoginWithId? +

startWebAuthnLoginWithId is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit startWebAuthnLoginWithId? +

Yes. Add a rate_limit block to the startWebAuthnLoginWithId rule in your Intercept 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.

How do I block startWebAuthnLoginWithId completely? +

Set action: deny in the Intercept policy for startWebAuthnLoginWithId. 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.

What MCP server provides startWebAuthnLoginWithId? +

startWebAuthnLoginWithId is provided by the Mcp Api MCP server (@fusionauth/mcp-api). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

startWebAuthnLoginWithId

Enforce policies on Mcp Api