start_negotiation

Start a negotiation with another agent

SERVERMIDAS Protocol SOURCEhttps://mcp.midasprotocol.org/mcp

Critical RISK CLASS

Category Financial

Parameters 43 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-bbrainfrance-midas-protocol/start-negotiation.md

WHAT IT DOES

What start_negotiation does on MIDAS Protocol

AI agents use start_negotiation to commit financial operations through MIDAS Protocol, usually the final step of a payment, billing, or trading workflow. A call moves real money.

Parameter	Type	Required
`offer`	object	Yes
`subject`	string	Yes
`counterpartyId`	string	Yes
`expiresInHours`	number	—

Parameters from the server's own tool schema.

RISK

Why start_negotiation is rated Critical

Negotiations on a financial infrastructure platform (alongside tools like accept_negotiation, borrow, book_and_pay) are financial in nature — initiating a negotiation commits the agent to a financial exchange process.

From the tool's definition 'Start a negotiation with another agent' on a server described as 'Complete financial infrastructure for AI agents — payments, lending, escrow & more.'

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs start_negotiation safely

PolicyLayer is an MCP gateway: it sits between your AI agents and MIDAS Protocol, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For start_negotiation, this is the rule to start with:

start_negotiation Approval-gated

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

View as policy code

policy.json

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

GATE THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect MIDAS Protocol, apply this rule, and every start_negotiation call is checked against it from then on.

FAQ

Questions about start_negotiation

What does the start_negotiation tool do? +

Start a negotiation with another agent. It is categorised as a Financial tool in the MIDAS Protocol MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

What parameters does start_negotiation accept? +

start_negotiation accepts 4 parameters: offer, subject, counterpartyId, expiresInHours. Required: offer, subject, counterpartyId. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on start_negotiation? +

Register the MIDAS Protocol MCP server in PolicyLayer and add a rule for start_negotiation: 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 MIDAS Protocol. Nothing to install.

What risk level is start_negotiation? +

start_negotiation 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 start_negotiation? +

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

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

start_negotiation is provided by the MIDAS Protocol MCP server (https://mcp.midasprotocol.org/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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