resolve_contact

Fuzzy-match a name, phone number, or email to a contact record. Uses multi-level resolution: exact match, digits, fuzzy, and macOS AddressBook.

Accepts freeform code/query input (query)

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

imessage-mcp Write Risk 3/5

// WHEN AI AGENTS USE THIS TOOL

AI agents use resolve_contact to create or modify resources in iMessage MCP. 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.

// WHY ENFORCE A POLICY ON RESOLVE_CONTACT

Without a policy, an AI agent could call resolve_contact 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 iMessage MCP.

// RECOMMENDED POLICY

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

imessage-mcp.yaml

tools:
  resolve_contact:
    rules:
      - action: allow
        rate_limit:
          max: 30
          window: 60

See the full iMessage MCP policy for all 25 tools.

// DETAILS

Tool Name resolve_contact

Category Write

MCP Server iMessage MCP MCP Server

Risk Level Medium

// MORE IMESSAGE MCP TOOLS

Read contact_stats Read conversation_gaps Read double_texts Read first_last_message Read forgotten_contacts Read get_contact Read get_conversation Read get_edited_messages

View all 25 tools →

// WHAT CAN GO WRONG

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

Browse the full MCP Attack Database →

// OTHER WRITE TOOLS ACROSS MCP SERVERS

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

AbraFlexi contact_create AbraFlexi contact_update AbraFlexi evidence_create AbraFlexi evidence_update AbraFlexi invoice_issued_update AbraFlexi invoice_received_create

// RELATED READING

// FAQ

What does the resolve_contact tool do? +

Fuzzy-match a name, phone number, or email to a contact record. Uses multi-level resolution: exact match, digits, fuzzy, and macOS AddressBook.. It is categorised as a Write tool in the iMessage MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on resolve_contact? +

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

What risk level is resolve_contact? +

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

Can I rate-limit resolve_contact? +

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

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

resolve_contact is provided by the iMessage MCP MCP server (imessage-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

resolve_contact

Enforce policies on iMessage MCP