upwork_withdraw_proposal

THE RISK

Critical Risk

upwork_withdraw_proposal moves real money, and an autonomous agent will call it with the same confidence it calls a search tool. A misread instruction or an injected prompt is all it takes to drain an account or blow a budget.

Documented attack patterns abuse exactly the kind of access upwork_withdraw_proposal gives an agent:

HOW TO CONTROL UPWORK_WITHDRAW_PROPOSAL

PolicyLayer is an MCP gateway — it sits between your AI agents and Upwork MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for upwork_withdraw_proposal:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "upwork_withdraw_proposal": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

Any call to upwork_withdraw_proposal is blocked until a human approves it. The rest of the server keeps working.

Create a free account and register Upwork MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

GATE THIS TOOL →

Free to start. No card required.

EXPLORE

More Upwork MCP Server tools

Write upwork_close_session Close browser session and cleanup resources. Write upwork_send_message upwork_send_message Write upwork_submit_proposal upwork_submit_proposal Read upwork_check_session Check if the current Upwork session is valid. Read upwork_get_connects_balance Get current Upwork Connects balance. Read upwork_get_contract_details Get detailed information about a specific contract. Read upwork_get_contracts upwork_get_contracts Read upwork_get_conversation upwork_get_conversation

All 18 Upwork MCP Server tools →

Financial tools on other servers

Atv build_deposit_tx Bitcoin MCP Server pay_invoice AbraFlexi bank_transaction_create Hilanet MCP decrease_coworker_salary

Go deeper

Critical-risk tools in Upwork MCP Server → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
How to Add Spending Controls to Any MCP Agent →
Rate Limiting MCP Tool Calls: A Practical Guide →

FAQ

What does the upwork_withdraw_proposal tool do? +

Withdraw a submitted proposal. It is categorised as a Financial tool in the Upwork MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on upwork_withdraw_proposal? +

Register the Upwork MCP Server MCP server in PolicyLayer and add a rule for upwork_withdraw_proposal: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Upwork MCP Server. Nothing to install.

What risk level is upwork_withdraw_proposal? +

upwork_withdraw_proposal is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit upwork_withdraw_proposal? +

Yes. Add a rate_limit block to the upwork_withdraw_proposal rule in your PolicyLayer 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 upwork_withdraw_proposal completely? +

Set action: deny in the PolicyLayer policy for upwork_withdraw_proposal. 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 upwork_withdraw_proposal? +

upwork_withdraw_proposal is provided by the Upwork MCP Server MCP server (vanooo/upwork-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Upwork MCP Server tool call.

Deterministic rules across all 18 Upwork MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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18 Upwork MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.

// WHAT UPWORK_WITHDRAW_PROPOSAL ON UPWORK MCP SERVER DOES

// THE RISK

// HOW TO CONTROL UPWORK_WITHDRAW_PROPOSAL

// EXPLORE