# Lane notes — Category 1 (Functional MCP Gateway Capability)

- **Owner:** ztaylor
- **Last live-state check:** 2026-06-18 (dashboard 200; gateway `zeb-gateway-test` live)
- **Fixtures used:** gateway `zeb-gateway-test` (7 main-catalog tools, Arcade-Headers auth); users A/B from `config/targets.yaml`. Raw evidence in `tests/probes.md`.

## Log
- 2026-06-18 — lib client connects live; protocol/curation/per-user-visibility/ungranted probes done.
  - PASS: protocol compliance (connect/list/invoke/structured error), tool curation (7 listed == 7 selected).
  - FINDING: per-user tool *list* scoping not differentiated via Arcade-Headers on one gateway (A==B). Needs cat-3 Contextual Access or separate gateways / User Source.
  - Q5: ungranted tool → `McpError: tool not enabled for this gateway`.

## Remaining for cat-1 scoring
- [ ] 2.2 — connect a **second real MCP client (Claude Code)** to the gateway (no-adapter evidence).
- [x] 2.5 — **dynamic registration**: PASS — saved add/remove (−Brightdata, +Youtube) reflected on next list, no restart; draft didn't propagate until Save.
- Reference server built at `lib/mcp_server` (echo/add/whoami); locally validated by `arcade deploy` (3 tools, 0 secrets). **`arcade deploy` is cloud-only (finding)** — see LIVE-POC.
- [x] 2.7 — **mixed prebuilt + custom**: PASS — gateway lists 7 prebuilt + 3 custom (ArcadeEvalRef_*, self-hosted via cloudflared tunnel) in one flat list; echo invokes. Full chain validated (also cat-9 Stage-2).
- [x] 2.4 — **`whoami` execution proof**: PASS — whoami A→user-a, B→user-b (calls execute as caller).
- [ ] 2.8 — finalize scores once the above land.