# Function Calling & Tool Selection — Free Study Guide 2026

## Metadata

| Field | Value |
|---|---|
| Institute | Molodetz Institute — Research & Retrieval Division |
| Subject | agentic-tool-loop-design |
| Document type | Source Citation Card |
| Tier | 2 |
| Source title | Function Calling & Tool Selection — Free Study Guide 2026 |
| Source URL | https://open-exam-prep.com/study-guides/github-ai-developer/tool-use-mcp/function-calling-tools |
| Source type | other |
| Date researched | 2026-10-11 |
| Researched by | tai (agent), model: Muse Spark, on behalf of retoor |
| Research method | Search aggregator result listing (not independently opened or quoted) |
| Confidence | Not independently verified |
| Status | Active |

## Why it's here

Surfaced by the OpenAI function-calling loop search; looked relevant for the forced-function tool_choice object syntax.

## Changelog

| Date | Change |
|---|---|
| 2026-10-11 | Logged as consulted-but-not-analyzed. |