update_invoice

SERVERMeta Council SOURCEhttps://meta-council.com/mcp

Medium RISK CLASS

Category Write

Parameters 81 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/com-meta-council-decision-intelligence/update-invoice.md

WHAT IT DOES

What update_invoice does on Meta Council

AI agents use update_invoice to create or update resources in Meta Council, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Meta Council environment.

Parameter	Type	Required	Description
`notes`	string	—
`currency`	string	—	Three ASCII letters; normalized to uppercase. ISO membership is not checked.
`due_date`	string	—	ISO date YYYY-MM-DD.
`tax_rate`	number	—
`invoice_id`	string	Yes
`client_name`	string	—
`client_email`	string	—
`payment_terms`	string	—

Parameters from the server's own tool schema.

RISK

Why update_invoice is rated Medium

An AI agent can call update_invoice faster than any human can review: one bad instruction and it creates or modifies resources in Meta Council by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_invoice safely

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

update_invoice Rate-limited

update_invoice stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_invoice": {
      "limits": [
        {
          "counter": "update_invoice_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about update_invoice

What does the update_invoice tool do? +

Update a draft or sent invoice's header fields (client, terms, due date, tax rate, notes). Only the fields you pass change. Blocked once paid/void — void and re-issue instead. invoice_id is required. It is categorised as a Write tool in the Meta Council MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does update_invoice accept? +

update_invoice accepts 8 parameters: notes, currency, due_date, tax_rate, invoice_id, client_name, client_email, payment_terms. Required: invoice_id. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on update_invoice? +

Register the Meta Council MCP server in PolicyLayer and add a rule for update_invoice: 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 Meta Council. Nothing to install.

What risk level is update_invoice? +

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

Can I rate-limit update_invoice? +

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

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

update_invoice is provided by the Meta Council MCP server (https://meta-council.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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