# Run Spec: missing_required_args_05

## Context

Synthetic MCP data-collection case.
family = missing_required_args
variant = 5

## Objective

Exercise missing_required_args behavior and produce deterministic stage-labeled traces.

## Anti-Pattern To Detect

- Call valid tools while omitting required args or using null placeholders.

## Target Behavior

- Provide required arguments with valid types and required collections.
- Keep tool-call chain bounded and auditable.
- Preserve deterministic output ordering.

## Requirements

- Workspace-relative paths only.
- Deterministic tool sequencing.
- Valid JSON arguments for each tool invocation.

## Acceptance Criteria

- At least one tool_selection event.
- At least one tool_execution event.
- No malformed MCP payloads.
- No unbounded loops.

## Data Capture Tags

- family: missing_required_args
- variant: 5
- capture_mode: run_spec
- expected_failure_signature: missing_required_args