Skip to main content
Glama

Conta Bemol MCP

by io.github.mcp-dir

openfinance_list_investments

Read-onlyIdempotent

Returns the investment portfolio for a connection (broker or bank with INVESTMENTS product enabled): FIIs, stocks, ETFs, fixed income (CDB/LCI/LCA/Tesouro), mutual funds, retirement (previdência) and COE. Each row carries balance, amount, amountOriginal, amountProfit, lastMonthRate / annualRate / lastTwelveMonthsRate (when available), dueDate, issuer, ISIN, etc. Returns { total:0, results:[], warning } instead of throwing when INVESTMENTS isn't enabled (403) or other upstream errors. DATA INTEGRITY: when MULTIPLE positions come back as TOTAL_WITHDRAWAL with balance/quantity 0 at once (mass zeroing), the tool cross-checks each position's own transaction history upstream; if the zeroing is contradicted (BUY with no sale/redemption/transfer) the response carries data_integrity_warning and the affected rows are flagged integrity:'suspect_zeroed' — treat those balances as UNAVAILABLE (likely a temporary connector failure publishing zeros), never as real R$0, and do NOT sum them into the portfolio.

Bulk support: accepts item_ids for batched execution.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
itemNo
pageNo
typeNo
item_idNo
item_idsNo
page_sizeNo

TDQS

A4/5.0
Behavior5/5

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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint. The description adds significant behavioral context: error handling (returns warning instead of throwing), and a detailed data integrity mechanism with cross-checking and 'suspect_zeroed' flags. No contradictions with annotations.

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 around 150 words and front-loaded with the main purpose. It includes essential details without excessive redundancy. Minor redundancy exists in the data integrity section, but overall it is well-structured and efficient.

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

Completeness4/5

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

Given 6 parameters, no output schema, and many siblings, the description covers error handling, data integrity, and return values (balance, amount, etc.). Missing parameter explanations partially reduce completeness, but the rest is adequate for a read-only tool.

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

Parameters2/5

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

Schema description coverage is 0%. The description only hints at 'item_ids for batched execution' but does not explain other parameters like 'item', 'page', 'type', or 'page_size'. This minimal compensation is insufficient for the agent to understand parameter usage correctly.

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 clearly states it 'Returns the investment portfolio for a connection' and lists specific asset types (FIIs, stocks, ETFs, etc.), making the resource and verb distinct. The tool name includes 'list_investments' and the description differentiates it from siblings that list accounts or transactions.

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

Usage Guidelines3/5

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

The description provides some context (error handling, bulk support) but does not explicitly state when to use this tool versus alternatives like openfinance_list_investment_transactions. The usage is implied by the resource type, but no when-not or exclusion criteria are given.

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

All Conta Bemol MCP toolsInspect
Try in Browser
RayrunBuild, deploy, and operate MCP servers without becoming an infrastructure team.ray.runAd

Glama MCP Gateway

Add one secure layer between your agents and this server.

TDQS

A4.2/5.0
Disambiguation5/5

Every tool has a clearly distinct purpose: accounts, transactions, credit card bills, loans, investments, connections, sync, categories, provider status, and platform meta-tools are all separable. Even the two transaction tools differ (per-account list vs consolidated analysis) and the two status tools differ (connection vs provider health).

Naming Consistency4/5

The openfinance_* prefix is consistently applied across the financial domain, and most follow a verb_noun pattern (list_accounts, get_balance, update_category). However, there are non-prefixed tools (authenticate, connect, marketplace, toolkit_info) and one outlier like openfinance_provider_status (noun instead of verb) that slightly break the pattern.

Tool Count3/5

25 tools is at the upper boundary of what feels heavy for a single server, even for a comprehensive financial aggregation toolkit. The number is justified by the breadth of domains covered (accounts, credit, loans, investments, connections, platform features), but it requires careful agent selection and might be better split into separate servers.

Completeness5/5

The surface covers the full financial data lifecycle: listing and fetching details for all asset types, updating transaction categories, managing connections (list, sync, disconnect, reauth), checking provider health, and searching connectors. There are no obvious dead ends—every domain has read and appropriate write/update operations.

Resources