> ## Documentation Index
> Fetch the complete documentation index at: https://docs.platform.nora.my/llms.txt
> Use this file to discover all available pages before exploring further.

# Flow settings

> Flow-wide knobs — limits, approvals, defaults, and access.

Flow settings live under the **Settings** icon in the top-right of the canvas. Anything set here applies to every Agent, every Tool, every run — unless the block overrides it.

## Global limits

Cap resource usage across the whole Flow:

* **Global max turns** — the total tool-call round-trips allowed in a single run. Sums across every Agent block.
* **Global max tokens** — total model tokens per run.
* **Global max cost (USD)** — hard ceiling per run in dollars.
* **Global timeout** — max wall-clock time before a run is aborted.

Per-block limits override globals when they're stricter. Globals win when they're stricter.

## Default model

The model new Agent blocks pick up by default. Existing Agents keep their explicit choice.

## Approvals defaults

* **Require approval for new Actions** — when on, any Action added to the Flow starts with approvals required. Team hardens this for high-risk Flows.
* **Approval webhook URL** — where approval requests are POSTed if you want to review outside Nora (Slack bot, custom queue). See [Approvals](/reliable/optimization/approve).

## Session memory defaults

Controls how much conversation history the Flow's chat interface remembers:

* **Turns to keep** — sliding window.
* **Summary strategy** — after the window fills, older turns are summarized rather than dropped. Off / rolling / on-overflow.

## Variables

Flow-level variables are named values available in every block (via `{vars.NAME}`). Use for:

* Environment strings (`{vars.SUPPORT_EMAIL}`)
* Tunable prompts (`{vars.TONE_PROFILE}`)
* Feature flags (`{vars.SHOW_DEBUG_INFO}`)

Variables have a name, type, default, and optional description. Draft and Published each carry their own values, so you can rehearse changes in Draft.

## Access

* **Editors** — who can change the Draft. Owners and Managers by default.
* **Publishers** — who can push a Publish. Owners and Managers only, by default.
* **Runners** — who can trigger runs. All workspace members by default.
* **Public link** — surfaces the Flow as an unauthenticated chat URL. Off by default.

## Data retention

How long Traces from this Flow are kept:

* **Trace retention** — days. Default 90. Longer requires an Enterprise plan.
* **Payload retention** — how long the full Trace payloads (prompts, tool arguments, tool responses) stay attached. Shorter values keep metadata but scrub payloads. Useful for regulated workloads.

## Danger zone

* **Archive** — hides the Flow from lists. All published versions keep running until you unpublish.
* **Delete** — permanent after a 7-day grace period. Deletes Draft, Traces, and unpublished versions. Published versions remain reachable by ID.