Definition · AI in finance
Tool use (function calling)
Tool use (function calling) is an LLM invoking external functions or services and using structured results. For tool use (function calling), the useful boundary is the data it uses, the tools it can call, the approvals it needs, the review standard, and the finance decision it may influence before the output is trusted or automated.
Also known as function calling, tool calling, LLM tool use
Why it matters
Understanding tool use (function calling) matters because AI-assisted finance work can sound confident even when data, assumptions, or compute paths are wrong. A useful definition keeps the output grounded, reviewable, and accountable. Pluvo uses function calling so the model invokes a deterministic compute engine for every figure, rather than estimating numbers in free text.
In practice
Governance example
Teams use tool use (function calling) when they evaluate whether an AI-assisted analysis can be trusted. The useful test is whether the output is tied to approved data, repeatable logic, human review, and an audit trail.
Pluvo example
Pluvo uses function calling so the model invokes a deterministic compute engine for every figure, rather than estimating numbers in free text.
In practice, teams should define tool use (function calling) with a clear source, owner, time period, and decision before they use it in reporting, planning, or operating reviews.
Understanding tool use (function calling) matters because AI-assisted finance work can sound confident even when data, assumptions, or compute paths are wrong. A useful definition keeps the output grounded, reviewable, and accountable. Pluvo uses function calling so the model invokes a deterministic compute engine for every figure, rather than estimating numbers in free text.
A strong workflow for tool use (function calling) separates the definition from the action: first agree what the term means, then decide how it is measured, when it changes, and who is accountable for the next step.
Pluvo uses function calling so the model invokes a deterministic compute engine for every figure, rather than estimating numbers in free text.
FAQ
What is function calling in LLMs?
Tool use (function calling) is an LLM invoking external functions or services and using structured results. For tool use (function calling), the useful boundary is the data it uses, the tools it can call, the approvals it needs, the review standard, and the finance decision it may influence before the output is trusted or automated.
How do AI agents use tools?
To use tool use (function calling), start with the decision, then confirm the source data, timing, calculation logic, and owner. The analysis is strongest when a reviewer can trace the answer back to the records that produced it.