CDF Finance

Atualizar transação

update_transaction

Idempotent

Atualiza uma transação existente (parcial — campo omitido/vazio mantém o valor atual). Se amount, type ou accountId mudarem, reverte o efeito de saldo da versão antiga e reaplica com os novos valores (retorna 400 se a nova conta não tiver saldo suficiente para EXPENSE/TRANSFER). Não reajusta parcelas irmãs (currentInstallment/totalInstallments) nem faturas de cartão — para mudanças que afetam cartão, prefira excluir e recriar. Dispara recálculo de projeções e insights (best-effort).

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "id": "<id>"
    },
    "name": "update_transaction"
  }
}

Input Schema

Name	Required	Description
`id`	Yes	ID da transação a atualizar
`date`	No	Data ISO ou dd/mm/yyyy
`type`	No	EXPENSE, INCOME, TRANSFER ou INVOICE_PAYMENT
`amount`	No	Novo valor da transação
`cardId`	No	Novo cartão vinculado
`isPaid`	No	Marca/desmarca como paga (sem reverter/aplicar efeito de saldo automaticamente — use confirm_pending_transaction pra isso)
`nature`	No	PERSONAL, PROFESSIONAL, MIXED ou BUSINESS
`agentId`	No	Novo contato/agente vinculado
`category`	No	Rótulo texto livre da categoria (independente de categoryId)
`paidDate`	No	Data ISO em que foi efetivamente paga
`accountId`	No	Nova conta debitada/creditada
`categoryId`	No	Id da Category do usuário
`description`	No	Nova descrição/título
`costCenterId`	No	Novo centro de custo
`scheduledDate`	No	Data ISO — reagenda a transação
`destinationAccountId`	No	Conta de destino, se type for TRANSFER

Output Schema

Name	Required	Description	Default
`count`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed8 schema fields changedSep 1, 2026
- addedInput schema / properties / accountId / description
```
Added value: +"Nova conta debitada/creditada"
```
- addedInput schema / properties / agentId / description
```
Added value: +"Novo contato/agente vinculado"
```
- addedInput schema / properties / amount / description
```
Added value: +"Novo valor da transação"
```
- addedInput schema / properties / cardId / description
```
Added value: +"Novo cartão vinculado"
```
- addedInput schema / properties / costCenterId / description
```
Added value: +"Novo centro de custo"
```
- addedInput schema / properties / description / description
```
Added value: +"Nova descrição/título"
```
- addedInput schema / properties / isPaid / description
```
Added value: +"Marca/desmarca como paga (sem reverter/aplicar efeito de saldo automaticamente — use confirm_pending_transaction pra isso)"
```
- addedInput schema / properties / paidDate / description
```
Added value: +"Data ISO em que foi efetivamente paga"
```

Changed10 schema fields changedSep 1, 2026

addedInput schema / properties / agentId
```
Added value: +{
+  "type": "string"
+}
```

addedInput schema / properties / category

Added value: +{
+  "description": "Rótulo texto livre da categoria (independente de categoryId)",
+  "type": "string"
+}

addedInput schema / properties / categoryId / description
```
Added value: +"Id da Category do usuário"
```
addedInput schema / properties / costCenterId
```
Added value: +{
+  "type": "string"
+}
```
addedInput schema / properties / date / description
```
Added value: +"Data ISO ou dd/mm/yyyy"
```

addedInput schema / properties / destinationAccountId

Added value: +{
+  "description": "Conta de destino, se type for TRANSFER",
+  "type": "string"
+}

addedInput schema / properties / id / description
```
Added value: +"ID da transação a atualizar"
```

addedInput schema / properties / nature

Added value: +{
+  "description": "PERSONAL, PROFESSIONAL, MIXED ou BUSINESS",
+  "type": "string"
+}

addedInput schema / properties / scheduledDate

Added value: +{
+  "description": "Data ISO — reagenda a transação",
+  "type": "string"
+}

addedInput schema / properties / type / description

Added value: +"EXPENSE, INCOME, TRANSFER ou INVOICE_PAYMENT"

First observedSep 1, 2026

TDQS

A4.9/5.0

Behavior5/5

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

The description discloses substantial behavior beyond the annotations: balance-effect reversal/reapplication when amount, type, or accountId change, a 400 error for insufficient balance, no adjustment of sibling installments or card invoices, and best-effort recalculation of projections/insights. This adds real operational context that annotations alone do not provide.

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

Conciseness5/5

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

The description is four dense sentences with no filler. It front-loads the main action and partial-update behavior, then covers side effects, exclusions, and post-update recalculations. Every sentence earns its place.

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 16-parameter mutation tool, the description covers scope, partial semantics, balance side effects, error conditions, exclusions, and alternative strategies. The output schema and per-parameter descriptions carry the remaining details, so nothing critical is missing for an agent to call this correctly.

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. The description adds important cross-parameter semantics, such as how changing amount/type/accountId triggers balance reversal and reapplication, and the insufficient-balance 400 condition. This goes beyond what individual parameter descriptions state.

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, 'Atualiza uma transação existente', and immediately explains partial update semantics. It also distinguishes itself from related operations by stating what it does not do (adjust sibling installments or credit card invoices), which separates it clearly from create/delete/confirm tools.

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

Usage Guidelines5/5

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

The description gives concrete when-to-use and when-not-to-use guidance: partial updates are supported, but for card-affecting changes it directs the agent to 'prefira excluir e recriar'. The isPaid parameter description also explicitly routes to confirm_pending_transaction, clarifying the correct alternative.

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

All CDF Finance tools Inspect

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