faf_chat

// WHEN AI AGENTS USE THIS TOOL

AI agents invoke faf_chat to trigger processes or run actions in Grok Faf. 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 FAF_CHAT

faf_chat 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.

faf-for-grok-first-mcp-server-built-for-xai.yaml

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

See the full Grok Faf policy for all 20 tools.

// DETAILS

Tool Name faf_chat

Category Execute

MCP Server Grok Faf MCP Server

Risk Level High

// MORE GROK FAF TOOLS

Destructive faf_clear Destructive rag_cache_clear Write faf_init Write faf_write Read faf_about Read faf_bi_sync Read faf_debug Read faf_enhance

View all 20 tools →

// WHAT CAN GO WRONG

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

Browse the full MCP Attack Database →

// OTHER EXECUTE TOOLS ACROSS MCP SERVERS

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

Agent Passport System — Cryptographic Identity for AI Agents commerce_preflight Agent Passport System — Cryptographic Identity for AI Agents execute_with_context Agent Passport System — Cryptographic Identity for AI Agents gateway_execute_approval Agent Passport System — Cryptographic Identity for AI Agents governance_360 Agent Passport System — Cryptographic Identity for AI Agents parse_governance_block_html AgentClear — API Marketplace for AI Agents call_service

// IN CONTEXT OF HIGH RISK

faf_chat is one of the high-risk operations in Grok Faf. For the full severity-focused view — only the high-risk tools with their recommended policies — see the breakdown for this server, or browse all high-risk tools across every MCP server.

// RELATED READING

// FAQ

What does the faf_chat tool do? +

Guided interview to build project.faf. It is categorised as a Execute tool in the Grok Faf MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on faf_chat? +

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

What risk level is faf_chat? +

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

Can I rate-limit faf_chat? +

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

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

faf_chat is provided by the Grok Faf MCP server (grok-faf-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policies on Grok Faf