[DOCS] tool_decision OTel event documentation missing tool_parameters attribute

Documentation Type

Missing documentation (feature not documented)

Documentation Location

https://code.claude.com/docs/en/monitoring-usage

Section/Topic

"Tool decision event" section under "Event Reference"

Current Documentation

The docs currently list these attributes for the claude_code.tool_decision event:

Attributes: All standard attributes event.name: "tool_decision" event.timestamp: ISO 8601 timestamp event.sequence: monotonically increasing counter for ordering events within a session tool_name: Name of the tool (for example, "Read", "Edit", "Write", "NotebookEdit") tool_use_id: Unique identifier for this tool invocation. Matches the tool_use_id passed to hooks, allowing correlation between OTel events and hook-captured data. decision: Either "accept" or "reject" source: Where the decision came from ...

The tool_result event on the same page includes tool_parameters (gated behind OTEL_LOG_TOOL_DETAILS=1), but the tool_decision event does not.

What's Wrong or Missing?

As of v2.1.157, tool_decision events now include a tool_parameters attribute when OTEL_LOG_TOOL_DETAILS=1 is set. This attribute contains tool-specific parameters (bash commands, MCP server/tool names, skill names) — the same payload documented for tool_result.

The tool_decision event documentation does not mention tool_parameters at all.

Suggested Improvement

Add a tool_parameters entry to the tool_decision attribute list, matching the existing tool_result documentation:

After:

* `tool_parameters` (when `OTEL_LOG_TOOL_DETAILS=1`): JSON string containing tool-specific parameters:
* For Bash tool: includes `bash_command`, `full_command`, `timeout`, `description`, `dangerouslyDisableSandbox`, and `git_commit_id` (the commit SHA, when a `git commit` command succeeds)
* For MCP tools: includes `mcp_server_name`, `mcp_tool_name`
* For Skill tool: includes `skill_name`
* For Task tool: includes `subagent_type`

Impact

Medium - Makes feature difficult to understand

Additional Context

Affected Pages:

| Page | Location | Context |
|------|----------|---------|
| https://code.claude.com/docs/en/monitoring-usage | "Tool decision event" section | Missing tool_parameters attribute |

Total scope: 1 page affected

The tool_result event documentation already describes tool_parameters with the same field descriptions; the tool_decision event needs the identical attribute added. The env var OTEL_LOG_TOOL_DETAILS is already documented in the environment variables reference.