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## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work. > - Connected Apps let an operator control which MCP actions an agent can use. > - The Permissions page lets the operator run a real action as an agent. > - The Test dialog displayed the nested MCP response as escaped JSON. > - A useful result was hard to read, even when the action worked. > - This pull request renders known MCP content as a readable preview and keeps the raw response available. > - The benefit is faster validation without losing the data needed to diagnose a failure. ## Linked Issues or Issue Description **What existing behavior does this improve?** The per-action Test dialog on a connection's Permissions page. **Subsystem affected** ui/ — React board UI. **Current behavior** The dialog shows the gateway response as an escaped JSON blob. Text content that contains JSON stays inside a string. The obsolete connection Test page also keeps a separate set of stories. **Proposed behavior** The dialog uses structured MCP content when present. It parses JSON text blocks when possible. It shows compact tables, cards, fields, or plain text. It keeps the full raw response behind a control and opens that view for errors or unknown block shapes. Stories exercise the Permissions page dialog, and the obsolete Test page and stories are removed. **Reason and benefit** An operator can inspect a successful action result at a glance and still inspect the exact gateway response when a call fails or looks wrong. **Breaking changes** No API or stored data changes. The Test dialog presentation changes. The raw response stays available. **Additional context** I tested a read-only Notion search through the real Permissions page. The dialog showed three result cards and the raw response control worked. Storybook uses invented example data. No directly matching public issue or open PR was found in the GitHub search. ## What Changed - Render structured MCP output and JSON text content in the action Test dialog. - Show wide rows as cards, keep short rows as tables, and retain the raw response for diagnosis. - Remove the obsolete connection Test page and its stories. - Add focused dialog tests and Permissions page Storybook cases for success, errors, mixed blocks, and malformed blocks. - Document the Test dialog result behavior in the connection playbook. - Keep agent mention icons visible when the Lucide icon node is unavailable in server rendering, which repaired a repeatable CI failure. ## Verification - `pnpm -r typecheck` — passed. - `pnpm exec vitest run --project @paperclipai/ui` — passed (7,111 tests). - `pnpm exec vitest run ui/src/pages/apps/app-detail/ActionTestDialog.test.tsx` — passed (11 tests). - `pnpm exec vitest run --project @paperclipai/ui ui/src/components/MarkdownBody.test.tsx` — passed (53 tests). - `pnpm test:run` — started, then stopped after the review fixes changed the head; the full sharded suite passed in CI. - `pnpm build` — passed. - `pnpm check:token-gates` — passed. - Use a connected MCP app. Open Permissions, select a read action, and run Test. Inspect the preview and the raw response control. ## Risks - MCP tools can return provider-specific block shapes. Unknown blocks open the raw response so the operator can inspect the exact result. - Row and field previews limit visible data. The raw response preserves the complete result. > This is a targeted improvement to the existing Connected Apps item in `ROADMAP.md`. ## Model Used OpenAI Codex, GPT-6. The session used tool access, code execution, and browser validation. The exact deployment ID and context window were not exposed to the session. ## Checklist - [x] I have included a thinking path that traces from project context to this change - [x] I have specified the model used (with version and capability details) - [x] I have checked ROADMAP.md and confirmed this PR does not duplicate planned core work - [x] I have searched GitHub for duplicate or related PRs and linked them above - [x] I have either (a) linked existing issues with `Fixes: #` / `Closes #` / `Refs #` OR (b) described the issue in-PR following the relevant issue template - [x] I have not referenced internal/instance-local Paperclip issues or links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip` URLs) - [x] My branch name describes the change (e.g. `docs/...`, `fix/...`) and contains no internal Paperclip ticket id or instance-derived details - [x] I have run tests locally and they pass - [x] I have added or updated tests where applicable - [x] I have updated relevant documentation to reflect my changes - [x] I have considered and documented any risks above - [x] All Paperclip CI gates are green - [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups - [x] I will address all Greptile and reviewer comments before requesting merge --------- Co-authored-by: Paperclip <noreply@paperclip.ing>