diff --git a/.cursor/rules/octobot-cloud.mdc b/.cursor/rules/octobot-cloud.mdc
index ed1c5f3e2d..5c4e11f6a3 100644
--- a/.cursor/rules/octobot-cloud.mdc
+++ b/.cursor/rules/octobot-cloud.mdc
@@ -11,6 +11,7 @@ alwaysApply: true
 - **Tentacles:** edit only `packages/tentacles/`; after changes run `bash .cursor/reinstall-tentacles.sh`. Never commit repo-root `tentacles/`.
 - **Git:** checkout `dev` (or user base) → feature branch → commit → open PR to **`dev`** unless the user specifies another target. Do not commit agent plan files (`PLAN-*.md`, `*.plan.md`, `.cursor/plans/`); use Plan mode or chat only — delete scratch plans before staging (`path.deny_agent_plans`). Do **not** edit agent docs (`**/AGENTS.md`, `.cursor/skills/**`, `.cursor/rules/**`, `.cursor/README.md`, `CONTRIBUTING-agent.md`, `tools/**/README.md`, `tools/**/ARCHITECTURE.md`) unless the task owns them; if diffs are out of scope, `git checkout origin/<base> -- <paths>` before commit (`agent_docs.no_regression_vs_merge_base`).
 - **Node UI tests:** Vitest (`npm test`) + Python/API tests; do not add `node_web_interface/e2e/` or Playwright specs (`path.deny_node_web_playwright_e2e`). Optional live UI QA via skill **agent-seed**, not committed e2e.
+- **UI copy/layout:** For `packages/tentacles/Services/Interfaces/node_web_interface/` or `.../web_interface/`, read skill **end-user-ui** (entry-level trading OK, no pro jargon, minimal, no slop, no em dash in UI strings).
 - Before handoff: `python -m tools.extended_linter --base origin/dev` (use `origin/<base>` matching the PR target).
 - No `pip install` / `npm install` to fix imports. No edits under `user/` or secret/env files.
 - Cross-package or tentacles work: read root `AGENTS.md` and colocated `AGENTS.md` for every area you touch (`octobot/`, `packages/<name>/`, `packages/tentacles/`).
diff --git a/.cursor/skills/cloud-roadmap/SKILL.md b/.cursor/skills/cloud-roadmap/SKILL.md
index 619b5a155c..f2059f5b15 100644
--- a/.cursor/skills/cloud-roadmap/SKILL.md
+++ b/.cursor/skills/cloud-roadmap/SKILL.md
@@ -96,6 +96,7 @@ Pytest matrix: [reference-pytest.md](../octobot-cloud/reference-pytest.md) (skil
 |-------|-------------|--------|
 | Unit (Python) | Test path + enumerated behaviors | Package `tests/` or `tools/tests/…` per `AGENTS.md` **Tests** |
 | Unit (Node UI) | TS under `packages/tentacles/Services/Interfaces/node_web_interface/` | `src/**/__tests__`; cwd that directory; `npm test` (vitest). Profile **`ui-node-web`** if build env needed. |
+| UI copy / UX | User-visible strings or layout in `node_web_interface` or `web_interface` | Review against skill **end-user-ui** (incl. no em dash in copy); Vitest or `web_interface` pytest per stack. |
 | Functional / integration | Cross-package or I/O flows | `tools/tests`, integration dirs, tentacles-dependent pytest |
 | UI functional | Browser / seeded grid | Default **N/A — Vitest + API tests**; **agent-seed** only when the user explicitly wants manual `/app` QA — **not** new Playwright `e2e/` files in git (`path.deny_node_web_playwright_e2e`) |
 
@@ -117,6 +118,7 @@ Pytest matrix: [reference-pytest.md](../octobot-cloud/reference-pytest.md) (skil
 | Implement / verify in cloud | **octobot-cloud** |
 | Pytest cwd / PYTHONPATH | **octobot-cloud** → `reference-pytest.md` |
 | Node UI unit tests | `packages/tentacles/Services/Interfaces/node_web_interface/` → `npm test` |
+| End-user UI copy | skill **end-user-ui** + colocated UI `AGENTS.md` |
 | Node UI browser QA | **agent-seed** |
 | Package boundaries | colocated `AGENTS.md` |
 | Contributor workflow | `CONTRIBUTING-agent.md` |
diff --git a/.cursor/skills/end-user-ui/SKILL.md b/.cursor/skills/end-user-ui/SKILL.md
new file mode 100644
index 0000000000..a65cf8c6cd
--- /dev/null
+++ b/.cursor/skills/end-user-ui/SKILL.md
@@ -0,0 +1,65 @@
+---
+name: end-user-ui
+description: >-
+  End-user UX for node_web_interface (React) and web_interface (Flask/templates):
+  entry-level trading terms OK, no pro-trader jargon, minimal UI, situational focus,
+  no AI slop, no em dash in UI strings. Apply on any UI copy,
+  layout, error, or help change.
+paths:
+  - packages/tentacles/Services/Interfaces/node_web_interface/**
+  - packages/tentacles/Services/Interfaces/web_interface/**
+---
+
+# End-user UI (node + classic web)
+
+Apply whenever you change user-visible copy, layout, errors, or help in the Node React UI or the classic Flask web UI tentacles.
+
+## Sources only (tentacles)
+
+- Edit UI only under `packages/tentacles/Services/Interfaces/node_web_interface/` or `packages/tentacles/Services/Interfaces/web_interface/`.
+- Do not open or patch repo-root `tentacles/` (install output). After tentacles source changes: `bash .cursor/reinstall-tentacles.sh`.
+
+Colocated guides: `packages/tentacles/Services/Interfaces/node_web_interface/AGENTS.md`, `.../web_interface/AGENTS.md`. Technical Node UI workflow (when present in the monorepo): workspace skill **node-web-interface-workflow**; cloud agents: skill **octobot-cloud** and `node_web_interface/README.md` for npm cwd.
+
+## Audience
+
+- Assume an **average non-technical** user who may be new to OctoBot but is using a **trading bot**. Not a developer, not a pro desk.
+- One primary goal per screen or step: show status, fix one problem, or confirm one action.
+
+## Language: entry-level trading OK; pro/advanced not
+
+- **OK:** everyday trading vocabulary users expect: buy/sell, order, pair, exchange, balance, profit/loss, stop loss, take profit, market/limit, position (when the feature uses it). Keep terms **short and consistent** with labels elsewhere in the app.
+- **Avoid:** advanced or pro-trader jargon: maker/taker fee tiers, funding rate mechanics, delta-neutral, basis, slippage models, OCO/iceberg unless the UI is explicitly an advanced screen; desk slang; dense acronyms without expansion on first use in that flow.
+- **Dev/infra:** still translate. Avoid "credentials", "auth payload", "session invalidated" without plain-language equivalent ("password" / "passphrase" per product).
+
+## Understandable
+
+- Short sentences; active voice; say what happened and what to do next.
+- If a term is required, prefer **entry-level trading** over **pro**; add one short gloss only when the screen cannot work without it (not a glossary block).
+- Errors: **title + one explanation**; optional **at most 1–2** tips only when they change behavior. Not a wall of suggestions.
+
+## Simple (less is better)
+
+- Remove or defer secondary info, debug detail, and duplicate controls.
+- Progressive disclosure: advanced fields behind "Advanced" or debug routes only (`/app/debug` stays operator-facing).
+- Empty states: one line what this is plus one action. Not essays.
+
+## No AI slop
+
+- Ban list (examples): filler openers ("Certainly", "Great question"), **marketing** buzzwords ("seamless", "robust", "empower", "leverage" as hype), emoji decoration, generic tip lists, three-panel "guidance" when one line suffices, marketing tone in errors.
+- **No em dash (`—`) in user-visible UI copy** (labels, titles, errors, toasts, template text). Use a period, comma, colon, or parentheses instead; match punctuation already used on the same screen.
+- Match **existing** OctoBot/Node UI tone in nearby components; read siblings before inventing new patterns.
+- Do not add UI "just to be helpful" if Vitest/API already cover behavior; user-visible text must earn its space.
+
+## By stack
+
+| Stack | Where copy lives |
+|-------|------------------|
+| `node_web_interface` | React components, route copy, toasts; keep logic in code/tests per skill **octobot-cloud** (Vitest, no e2e). |
+| `web_interface` | Jinja templates, flash messages, modal titles; Python strings visible in templates. |
+
+## Before handoff (UI PR)
+
+- Re-read changed strings aloud as a non-expert.
+- `npm test` in `packages/tentacles/Services/Interfaces/node_web_interface/` when touched; pytest for `web_interface/tests` when touched.
+- No new Playwright e2e; agent-seed only if the user asked for live QA.
diff --git a/.cursor/skills/octobot-cloud/SKILL.md b/.cursor/skills/octobot-cloud/SKILL.md
index 9f52fb72aa..35760294b7 100644
--- a/.cursor/skills/octobot-cloud/SKILL.md
+++ b/.cursor/skills/octobot-cloud/SKILL.md
@@ -63,6 +63,7 @@ See **[reference-pytest.md](reference-pytest.md)** for cwd and PYTHONPATH per CI
 
 ## Node UI tests (agents)
 
+- **User-visible UI:** For copy, layout, errors, or help in `node_web_interface` or classic `web_interface`, read skill **end-user-ui** (`.cursor/skills/end-user-ui/SKILL.md`) and colocated `AGENTS.md` under those tentacle paths.
 - **In PRs:** Vitest in `packages/tentacles/Services/Interfaces/node_web_interface/` (`npm test`) plus Python/API tests (`node_api_interface`, `packages/node`, tentacles pytest as needed). **Do not** add Playwright e2e under `e2e/` or `test:e2e` scripts (`path.deny_node_web_playwright_e2e`).
 - CI runs Vitest for tentacles `package.json` projects; e2e is not in the matrix.
 
diff --git a/AGENTS.md b/AGENTS.md
index 1f7690e166..5546ec3bb3 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -29,6 +29,7 @@ Colocated **`AGENTS.md`** files describe package boundaries (owns, deps, tests).
 | Single package task | `packages/<name>/AGENTS.md` |
 | Core app / CLI / config | [`octobot/AGENTS.md`](octobot/AGENTS.md) |
 | Tentacles sources vs install | [`packages/tentacles/AGENTS.md`](packages/tentacles/AGENTS.md) |
+| Node UI or classic web UI (copy, layout, errors) | [`packages/tentacles/Services/Interfaces/node_web_interface/AGENTS.md`](packages/tentacles/Services/Interfaces/node_web_interface/AGENTS.md), [`packages/tentacles/Services/Interfaces/web_interface/AGENTS.md`](packages/tentacles/Services/Interfaces/web_interface/AGENTS.md), skill **end-user-ui** (`.cursor/skills/end-user-ui/SKILL.md`) |
 | Cross-package or tentacles | This file + every involved colocated `AGENTS.md` |
 | Node UI demo / agent-seed QA | [`tools/agent_seed/README.md`](tools/agent_seed/README.md) + skill **agent-seed** (`.cursor/skills/agent-seed/SKILL.md`) |
 
diff --git a/packages/tentacles/AGENTS.md b/packages/tentacles/AGENTS.md
index 1a81dea071..65ddd26343 100644
--- a/packages/tentacles/AGENTS.md
+++ b/packages/tentacles/AGENTS.md
@@ -61,6 +61,17 @@ npm run generate-client
 
 See `node_web_interface/README.md` (openapi generated by node_api_interface). Wire protocol models: [`../protocol/AGENTS.md`](../protocol/AGENTS.md).
 
+
+## End-user UI
+
+Node and classic web UI tentacles share end-user copy rules. Before layout or user-visible text changes, read:
+
+- `packages/tentacles/Services/Interfaces/node_web_interface/AGENTS.md`
+- `packages/tentacles/Services/Interfaces/web_interface/AGENTS.md`
+- Skill **end-user-ui** (`.cursor/skills/end-user-ui/SKILL.md`)
+
+Edit sources only under `packages/tentacles/`; never repo-root `tentacles/`.
+
 ## Tests
 
 - Often via `octobot` job: `pytest --ignore=tentacles/Trading/Exchange tentacles`
diff --git a/packages/tentacles/Services/Interfaces/node_web_interface/AGENTS.md b/packages/tentacles/Services/Interfaces/node_web_interface/AGENTS.md
new file mode 100644
index 0000000000..1f72a2e219
--- /dev/null
+++ b/packages/tentacles/Services/Interfaces/node_web_interface/AGENTS.md
@@ -0,0 +1,38 @@
+# Agents: node_web_interface
+
+## Role
+
+Node product **React** web UI (`octobot-node`): Vite, TanStack Router/Query, Tailwind. Built bundle in `dist/` ships with the tentacle.
+
+## End-user UX (mandatory)
+
+Read skill **end-user-ui** (`.cursor/skills/end-user-ui/SKILL.md`) before any user-visible copy, layout, error, or help change.
+
+- Entry-level trading terms OK; no pro-trader jargon.
+- Minimal UI; one primary goal per screen.
+- No AI slop; no em dash (`—`) in user-visible strings.
+
+## Owns
+
+- `src/`, tests, `package.json` under **this** `packages/tentacles/.../node_web_interface/` path
+- Not `src/client/*` (generated via `npm run generate-client`)
+- Not repo-root `tentacles/` (install output)
+
+## Do not
+
+- Edit repo-root `tentacles/`; after source changes run `bash .cursor/reinstall-tentacles.sh`
+- Hand-edit `openapi.json` or generated client files (see [`../../../AGENTS.md`](../../../AGENTS.md#node-rest-openapi-node_api_interface--node_web_interface))
+- Add Playwright e2e under `e2e/` (`path.deny_node_web_playwright_e2e`)
+
+## Tests
+
+- `npm test` (Vitest) from this directory; see [README.md](README.md)
+
+## Related
+
+- Tentacles index: [`packages/tentacles/AGENTS.md`](../../../AGENTS.md)
+- Node REST OpenAPI: `node_api_interface` tentacle (same parent `Services/Interfaces/`)
+
+## Last reviewed
+
+- 2026-09-19
diff --git a/packages/tentacles/Services/Interfaces/node_web_interface/README.md b/packages/tentacles/Services/Interfaces/node_web_interface/README.md
index 5377fd2c52..6b0ed4693b 100644
--- a/packages/tentacles/Services/Interfaces/node_web_interface/README.md
+++ b/packages/tentacles/Services/Interfaces/node_web_interface/README.md
@@ -3,6 +3,11 @@
 React web UI for the OctoBot node API, packaged as a tentacle. Built with Vite, TanStack
 Router/Query, and Tailwind. The compiled bundle in `dist/` is what ships in the tentacle package.
 
+**Agents:** User-visible copy and layout follow [AGENTS.md](AGENTS.md) and skill **end-user-ui**
+([`.cursor/skills/end-user-ui/SKILL.md`](../../../../../.cursor/skills/end-user-ui/SKILL.md))
+under the OctoBot repo root. Edit sources here in `packages/tentacles/.../node_web_interface/` only;
+never repo-root `tentacles/`.
+
 ## Requirements
 
 Node 24 (see `.nvmrc`). Run `nvm use` before any npm command.
diff --git a/packages/tentacles/Services/Interfaces/web_interface/AGENTS.md b/packages/tentacles/Services/Interfaces/web_interface/AGENTS.md
new file mode 100644
index 0000000000..afb82c5d50
--- /dev/null
+++ b/packages/tentacles/Services/Interfaces/web_interface/AGENTS.md
@@ -0,0 +1,34 @@
+# Agents: web_interface
+
+## Role
+
+Classic OctoBot **Flask** web UI: Jinja templates, static assets, and controllers that drive user-facing pages.
+
+## End-user UX (mandatory)
+
+Read skill **end-user-ui** (`.cursor/skills/end-user-ui/SKILL.md`) before templates, flash messages, modal titles, or any user-visible string change.
+
+- Entry-level trading terms OK; no pro-trader jargon.
+- Minimal UI; one primary goal per screen.
+- No AI slop; no em dash (`—`) in user-visible strings.
+
+## Owns
+
+- `templates/`, `static/`, and user-visible controller copy under **this** `packages/tentacles/.../web_interface/` path
+- Tests under `tests/` when present
+
+## Do not
+
+- Edit repo-root `tentacles/` (install output). After source changes: `bash .cursor/reinstall-tentacles.sh`
+
+## Tests
+
+- Pytest under this tentacle's `tests/` when present; follow [`packages/tentacles/AGENTS.md`](../../../AGENTS.md) for broader tentacles pytest invocations
+
+## Related
+
+- Tentacles index: [`packages/tentacles/AGENTS.md`](../../../AGENTS.md)
+
+## Last reviewed
+
+- 2026-09-19