diff --git a/docs/public/agents/mcp.mdx b/docs/public/agents/mcp.mdx
index 0bf9a0921..f7abd2c29 100644
--- a/docs/public/agents/mcp.mdx
+++ b/docs/public/agents/mcp.mdx
@@ -159,6 +159,8 @@ Use `goal` for inline goal text or `goal_file` to read the run goal from a file.
 
 Creation and execution remain separate operations. `fabro_run_create` first creates a durable run, then requests one start by default. Set `start: false` to leave the new run submitted without requesting execution.
 
+`fabro_run_create` transmits only the values in the request. The MCP server's `~/.fabro/settings.toml` `[run]` defaults, and any project or machine run settings, are not applied to the created run, matching `fabro run`. Keep workflow-owned behavior in `workflow.toml`, and pass explicit `auto_approve`, `dry_run`, `model`, `provider`, `environment`, or `preserve_sandbox` values in the spec when a run needs them.
+
 Run summaries returned by the MCP server include parent metadata. Use `parent_id` on `fabro_run_create` to create a child run, `parent_id` on `fabro_run_search` to list direct children, and the `link_parent` or `unlink_parent` actions on `fabro_run_interact` to change an existing run's parent. See [Child Runs](/execution/child-runs) for the orchestration model.
 
 Pending runs can be approved or denied through `fabro_run_interact`:
diff --git a/docs/public/execution/child-runs.mdx b/docs/public/execution/child-runs.mdx
index 0158c8469..6b07604fe 100644
--- a/docs/public/execution/child-runs.mdx
+++ b/docs/public/execution/child-runs.mdx
@@ -138,6 +138,8 @@ Workflow content and workspace target are separate choices. If `target` is omitt
 
 `goal_file` is also a shared-filesystem feature. Local agents can read it relative to the operation `cwd`; Docker and Daytona agents must send the resolved `goal` text by value.
 
+Like `fabro run`, `fabro_run_create` transmits only what the request names. Run defaults from the caller's `~/.fabro/settings.toml` `[run]` table, and project or machine run settings, are not applied to the created run. Put workflow-owned behavior in the workflow's `workflow.toml`, and pass explicit `auto_approve`, `dry_run`, `model`, `provider`, `environment`, or `preserve_sandbox` values in the spec when a child needs them. See [Run Configuration](/execution/run-configuration) for the settings layering.
+
 By default, `fabro_run_create` requests start for each created run. Set `"start": false` when the parent should create the child now and start it later.
 
 ## Start and approval