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Fixes #7623 ## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work. > - Company invites are part of the access subsystem and must produce URLs that recipients can open from outside the host machine. > - Paperclip already has public/auth base URL configuration for deployments behind a public hostname, Tailscale, or a reverse proxy. > - Invite URL composition was still deriving its origin from the incoming request host, so loopback-bound servers emitted `http://127.0.0.1:3100/invite/...`. > - A loopback invite URL is not shareable with a remote human or agent, even when the token itself is valid. > - This pull request makes invite URL builders prefer the configured public base URL and keep the existing request-host fallback when it is unset. > - The benefit is that copied invite links use the reachable deployment origin without changing local-only behavior. ## Linked Issues or Issue Description Fixes #7623 No duplicate or related PRs/issues were found in a GitHub search for invite URL, loopback, public base URL, and `authPublicBaseUrl` terms. ## What Changed - Added base URL resolution in `server/src/routes/access.ts` that strips trailing slashes and prefers configured `authPublicBaseUrl` over the request-derived host. - Threaded `authPublicBaseUrl` through invite summary, invite onboarding manifest, onboarding text, access routes, `createApp`, and server startup wiring. - Added `server/src/__tests__/invite-url-public-base-url.test.ts` covering configured public-base precedence, unset fallback behavior, and trailing-slash normalization. - Registered the invite public-base URL test in the serialized Vitest server runner. ## Verification ```bash pnpm install --frozen-lockfile pnpm exec vitest run server/src/__tests__/invite-url-public-base-url.test.ts pnpm run test:run:serialized ``` Local results from the rebased PR branch: - `pnpm install --frozen-lockfile` exited 0. - Targeted invite URL test exited 0: 1 file, 3 tests passed. - Serialized server suite exited 0: 106 serialized suites completed; the new invite URL test passed inside that runner. Manual check after deployment: set `PAPERCLIP_AUTH_PUBLIC_BASE_URL` or equivalent public base URL config, create a company invite, and confirm the returned/copied invite URL uses that public origin instead of `127.0.0.1`. ## Risks Low risk. The new public base URL parameter is optional and falls back to existing request-derived behavior when unset. The main operational risk is misconfigured public base URL input; the implementation only trims trailing slashes and otherwise trusts the configured origin. ## Model Used - Original implementation: Anthropic `claude-sonnet-4-6`, 200k context, tool use and test execution. - Conflict repair and verification: OpenAI Codex GPT-5.5, coding agent with shell, git, GitHub CLI, and local test execution. ## 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) - [ ] 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 - [ ] All Paperclip CI gates are green - [ ] 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: Coder (Claude) <coder-claude@paperclip.ing> Co-authored-by: Paperclip <noreply@paperclip.ing> Co-authored-by: Paperclip Coder (Claude) <lad-agent@paperclip.ing>