brc_create_purchase

SERVERRed by Big Red Cloud SOURCEhttps://red.bigredcloud.com/mcp

Medium RISK CLASS

Category Write

Parameters 1211 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-bigredcloud-red-mcp-server/brc-create-purchase.md

WHAT IT DOES

What brc_create_purchase does on Red by Big Red Cloud

AI agents use brc_create_purchase to create or update resources in Red by Big Red Cloud, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Red by Big Red Cloud environment.

Parameter	Type	Required	Description
`note`	string	Yes	Purchase note.
`acCode`	string	Yes	Supplier account code, for example SUP001.
`procDate`	string	Yes	Processing date in ISO format.
`entryDate`	string	Yes	Entry date in ISO format.
`netAmount`	number	Yes	Net amount before VAT.
`reference`	string	—	Required when the company is configured for manual purchase references.
`vatRateId`	integer	Yes	VAT rate id.
`routeToken`	string	Yes	Opaque routeToken from brc_route_request for this action workflow. Required for transactional tools. Routing permission only — does not replace preview-before-p
`supplierId`	string	Yes	Supplier id, for example 26180406.
`accountCode`	string	Yes	Nominal/account code.
`companyName`	string	Yes	Company context name, for example YOUR-COMPANY-NAME.
`description`	string	Yes	Analysis line description.

Parameters from the server's own tool schema.

RISK

Why brc_create_purchase is rated Medium

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

Risk signalsHigh parameter count (18 properties)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs brc_create_purchase safely

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

brc_create_purchase Rate-limited

brc_create_purchase 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": {
    "brc_create_purchase": {
      "limits": [
        {
          "counter": "brc_create_purchase_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 Red by Big Red Cloud, apply this rule, and every brc_create_purchase call is checked against it from then on.

FAQ

Questions about brc_create_purchase

What does the brc_create_purchase tool do? +

Creates a BRC purchase using structured MCP fields. Requires a reference when the company is configured for manual purchase references; otherwise prefer brc_create_purchase_gen_ref. Requires routeToken from brc_route_request for the matching action workflow. Call brc_route_request first with the user's complete original action request. Retain the returned routeToken through lookup, preview, and confirmation, and pass the same token on the final permitted transactional tool call. Never invent a placeholder token. A routeToken is not permission to post — preview-before-posting and confirmWrite/confirmDelete still apply. Also requires confirmCounterpartyExplicit: true once the user has explicitly named or confirmed the customer/supplier in the current conversation. Do not reuse a counterparty from an earlier preview without that confirmation. It is categorised as a Write tool in the Red by Big Red Cloud MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does brc_create_purchase accept? +

brc_create_purchase accepts 12 parameters: note, acCode, procDate, entryDate, netAmount, reference, vatRateId, routeToken, supplierId, accountCode, companyName, description. Required: note, acCode, procDate, entryDate, netAmount, vatRateId, routeToken, supplierId, accountCode, companyName, description. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on brc_create_purchase? +

Register the Red by Big Red Cloud MCP server in PolicyLayer and add a rule for brc_create_purchase: 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 Red by Big Red Cloud. Nothing to install.

What risk level is brc_create_purchase? +

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

Can I rate-limit brc_create_purchase? +

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

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

brc_create_purchase is provided by the Red by Big Red Cloud MCP server (https://red.bigredcloud.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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