Medium Risk

discourse_select_site

Validate and select a Discourse site for subsequent tool calls. Verifies the site is reachable and retrieves its title. Must be called before using other tools when multiple sites are configured.

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

AI agents use discourse_select_site to create or modify resources in Discource Mcp Tools. 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 discourse_select_site repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Discource Mcp Tools.

Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.

king-of-the-grackles-discourse-forum-mcp.yaml
tools:
  discourse_select_site:
    rules:
      - action: allow
        rate_limit:
          max: 30
          window: 60

See the full Discource Mcp Tools policy for all 15 tools.

Tool Name discourse_select_site
Category Write
Risk Level Medium

View all 15 tools →

Agents calling write-class tools like discourse_select_site have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

Other tools in the Write risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.

What does the discourse_select_site tool do? +

Validate and select a Discourse site for subsequent tool calls. Verifies the site is reachable and retrieves its title. Must be called before using other tools when multiple sites are configured.. It is categorised as a Write tool in the Discource Mcp Tools MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on discourse_select_site? +

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

What risk level is discourse_select_site? +

discourse_select_site is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit discourse_select_site? +

Yes. Add a rate_limit block to the discourse_select_site 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 discourse_select_site completely? +

Set action: deny in the Intercept policy for discourse_select_site. 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 discourse_select_site? +

discourse_select_site is provided by the Discource Mcp Tools MCP server (king-of-the-grackles/discourse-forum-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policies on Discource Mcp Tools

Open source. One binary. Zero dependencies.

npx -y @policylayer/intercept
github.com/policylayer/intercept →
// GET IN TOUCH

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