Fact

check statements using Jina AI's grounding engine

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

// WHEN AI AGENTS USE THIS TOOL

AI agents call Fact to perform operations in Jina Ai. While the risk category is not fully classified, applying a rate limit gives you visibility into how often the tool is called and prevents unexpected bursts of activity from autonomous agents.

// WHY ENFORCE A POLICY ON FACT

Applying a policy to Fact gives you an audit trail of every call an AI agent makes. Even for low-risk tools, visibility into agent behaviour helps you debug issues, optimise workflows, and maintain compliance with your organisation's security requirements.

// RECOMMENDED POLICY

Apply a rate limit to control usage and monitor for unexpected behaviour.

jina-ai.yaml

tools:
  Fact:
    rules:
      - action: allow
        rate_limit:
          max: 60
          window: 60

See the full Jina Ai policy for all 4 tools.

// DETAILS

Tool Name Fact

Category Other

MCP Server Jina Ai MCP Server

Risk Level Low

// MORE JINA AI TOOLS

Read fact_check Read read_webpage Read search_web

// WHAT CAN GO WRONG

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

Browse the full MCP Attack Database →

// OTHER OTHER TOOLS ACROSS MCP SERVERS

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

Ai Agent Incremental mode Ai Agent Path isolation Zype Com Analytics Zype Com Categories Zype Com Monetization Zype Com Playlists

// RELATED READING

// FAQ

What does the Fact tool do? +

check statements using Jina AI's grounding engine. It is categorised as a Other tool in the Jina Ai MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on Fact? +

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

What risk level is Fact? +

Fact is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit Fact? +

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

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

Fact is provided by the Jina Ai MCP server (jina-ai-mcp-server). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Fact

Enforce policies on Jina Ai