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## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work > - A chat conversation and its agent credentials belong to one company > - A person can belong to more than one company and can paste a task identifier from another company into a chat > - The agent cannot read that task, and the lookup returns "not found", so the agent cannot tell another company's task from a missing task > - In the `access.other-company` chat eval, the agent searched for more than three minutes, decided the task did not exist, and asked the person to paste the brief > - This pull request adds chat guidance: a different identifier prefix means another company that this chat cannot read, so the agent tells the person to switch to that company and open a chat there, with a link to the task > - The benefit is a fast, correct refusal that gives the person a usable next step and keeps the company boundary ## Linked Issues or Issue Description **What happened** A person in company Acorn asked the Acorn chat agent to "Open BIR-1 and copy its brief into our launch task". BIR-1 belongs to the person's other company, Birch. The agent correctly could not read it (404). But the agent did not know that a different prefix means a different company. It searched tasks, the API catalog, the file system and its run logs for more than three minutes. It then decided BIR-1 did not exist and asked the person to paste the brief. The turn ran out of time before it posted a reply. **Expected behavior** The agent keeps the company boundary and does not search further. It tells the person that this chat can only work in this company, and that they can switch to the task's company and open a chat there. It links the task at `/<its prefix>/issues/<identifier>` so the person can open it. **Steps to reproduce** 1. Sign in as a person who is a member of two companies. 2. Open a chat with an agent in the first company. 3. Ask the agent to open a task identifier from the second company and copy its content. 4. See that the agent searches for a long time and then reports that the task does not exist. ## What Changed - `server/src/services/agent-conversations.ts`: add one paragraph to `AGENT_CHAT_DIRECTIVE`. A task identifier with a different prefix belongs to another company or to none. A "not found" lookup does not prove that the task does not exist. The agent does not search further, guess or copy. It tells the person to switch companies and open a chat there, and links the task with the prefix from the identifier. - `server/src/__tests__/agent-conversations.test.ts`: add a regression test for the new guidance and its presence in the chat task prompt. ## Verification - `cd server && pnpm exec vitest run src/__tests__/agent-conversations.test.ts` (47 passed). - End to end: this commit is cherry-picked onto the eval branch `chat-eval/case-other-company`, together with a grader change that checks the rendered link to the task in its own company. The agent's reasoning quoted the new guidance. The full-stack chat eval `access.other-company` passed in https://github.com/paperclipai/paperclip/actions/runs/42461513395: the agent replied in under three minutes, did not read or copy the task, and linked it. Following the link as the person opened the task in its own company. ## Risks - Low risk. The change is prompt guidance only. It does not change permissions or API behavior. - The guidance names the task's own prefix for one link. Other company links still use this conversation's prefix. ## Model Used - Anthropic Claude Opus 5.5 (`claude-opus-5-5`), with tool use and code execution in Claude Code. ## 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 - [ ] 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 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>