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Red by Big Red Cloud

by io.github.BigRedCloud

Create Supplier

brc_create_supplier

Creates a BRC supplier using a raw BRC payload. Does not create or update opening balance transactions. Opening-balance fields are not posted by this tool; supplier opening balances are entered directly in Big Red Cloud. Requires a valid routeToken issued for the matching action workflow. The token remains valid through lookup, preview and the permitted transaction. Placeholder tokens are invalid. A routeToken does not bypass preview or explicit-confirmation requirements. A call without confirmWrite: true returns confirmation_required and a payload preview. confirmWrite: true applies the previewed change after explicit confirmation. Passing preflight is not confirmation.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
payloadYesRaw BRC-compatible payload for this endpoint.
routeTokenYesOpaque routeToken from brc_route_request for this action workflow. Required for transactional tools. Routing permission only — does not replace preview-before-posting or confirmWrite.
companyNameYesCompany context name, for example YOUR-COMPANY-NAME.
confirmWriteNoMust be true only after a plain-English preview before posting has been shown in the current conversation and the user explicitly confirmed posting (for example yes, create it / post it now / confirm). Never set true on the first call or because the user initially asked to create something. Nothing is written to Big Red Cloud until you confirm.
connectionRefNoOpaque Red connection reference returned by brc_confirm_company_connection. Pass this exact value on every later tool call when the MCP client rotates session ids (for example Vibe/Mistral). Keep reusing the same connectionRef after successful tool calls — do not start a new connection because a lookup returned empty or partial data. It is not an API key and does not contain credentials.

TDQS

A4.6/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations only indicate readOnly=false and destructive=false. The description goes far beyond that by explaining the two-phase write flow: without confirmWrite, the call returns confirmation_required and a payload preview; confirmWrite applies the previewed change only after explicit confirmation. It also warns that placeholder tokens are invalid, routeToken does not bypass preview, and preflight is not confirmation.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is front-loaded with the core action and packed with dense, useful caveats. Every sentence contributes value, though there is slight redundancy between 'Does not create or update opening balance transactions' and 'Opening-balanace fields are not possted by this tool', which prevents a perfect score.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a mutation tool with no output schema, the description covers the entire call flow: routeToken provenance and validity, placeholder invalidity, the preview/confirmation contract, the response to an unconfirmed call, and the opening-balanace exclusion. The schema already covers companyName and connectionRef, so nothing essential is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the baseline is 3, but the description adds meaning beyond the schema by explaining routeToken validity through lookup, preview, and the permitted transaction, and by clarifying that passing preflight is not the same as user confirmation. These nuances enrich the semantics of confirmWrite and routeToken beyond their schema descriptions.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description opens with a specific verb and resource ('Creates a BRC supplier using a raw BRC payload'), making the tool's core function unmistakable. It also explicitly distinguishes itself from opening-balanace tools by stating that opening-balanace fields are not possted by this tool, removing ambiguity against sibling get/list supplier opening-balanace tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives clear usage context: it creates a single supplier, does not handle opening balances, and requires a routeToken with the full preview/confirmation workflow. It does not name a specific alternative tool like brc_batch_suppliers, but the opening-balanace exclusion and the explicit preconditions are sufficient guidance for an agent.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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TDQS

B3.2/5.0
Disambiguation4/5

Most tools have a clear single resource-and-action focus, and the systematic naming helps an agent separate create/get/update/delete/list operations. The main confusion risks are the help/search cluster (red_help, find_help_resources, get_help_resource_details) and the payment/cash-payment/batch-payment variants, which require careful reading of the descriptions to avoid misselection.

Naming Consistency4/5

The brc_ prefix with snake_case verb_noun naming is used consistently across the vast majority of tools, e.g. brc_list_customers, brc_create_sales_invoice, brc_delete_purchase. A few noun-style names like brc_company_readiness_check, brc_grouped_nominal_accounts_report, and brc_red_help break the pattern, but these are minor deviations.

Tool Count1/5

159 tools is an extreme count for an MCP server, well beyond the 50+ threshold described as an extreme mismatch. While the accounting domain is broad, the surface is inflated by batch variants, generated-reference variants, and without-dormant list variants that could be consolidated.

Completeness4/5

Core accounting entities have strong lifecycle coverage: customers, suppliers, products, sales reps, bank accounts, quotes, sales invoices/entries/credit notes, purchases, payments, cash receipts, accruals, prepayments, and nominal journal batches all support relevant CRUD and batch operations. Minor gaps include the quote update being limited to the reference only, no update/create tools for VAT categories or company settings, and email sending being limited to quotes, invoices, and statements.

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