Files
PaperClipAI/server
LKL-ZREO 6c1ee40af0 fix(runner): keep assigned-tool pagination stable across revocations (#14258)
## Thinking Path

> - Paperclip manages AI agents and the tools they can use.
> - Native runs can receive assigned app tools through governed tool
access.
> - Large tool catalogs use a search tool with offset paging.
> - The server refreshes grants before each page so revocations take
effect at once.
> - The old paging code applied the saved offset after this live list
changed.
> - A revoked earlier tool shifted the list and caused a later allowed
tool to be skipped.
> - This pull request keeps the offset on the fixed session catalog and
filters grants during the scan.
> - The benefit is complete tool discovery without weakening live
revocation.

## Linked Issues or Issue Description

**What happened?**

`paperclip_search_assigned_tools` used an offset against the current
authorized tool list. If an earlier tool was revoked between pages, the
list became shorter. The next page then skipped a tool that was still
authorized.

**Expected behavior**

Paging must return every matching tool that remains authorized. A live
revocation must hide the revoked tool without changing the position of
later tools.

**Steps to reproduce**

1. Create an assigned tool catalog with `alpha`, `bravo`, `charlie`, and
`delta`.
2. Request two tools from offset `0`. The result contains `alpha` and
`bravo` with next offset `2`.
3. Revoke `alpha` before the next request.
4. Request two tools from offset `2`.
5. The old code returns only `delta` and skips the still-authorized
`charlie` tool.

**Paperclip version or commit**

`0f14d261233c545aa6a8a38ec253c498a5130fff`

**Agent adapter(s) involved**

Not adapter-specific. This bug is in the native assigned-tool discovery
path.

Related work: Refs #14218.

## What Changed

- Keep search offsets on the fixed tool catalog for the session.
- Apply fresh grant checks while scanning that fixed sequence.
- Add a regression test for a revocation between two pages.

## Verification

- `node node_modules/vitest/vitest.mjs run
server/src/services/native-runtime/assigned-mcp-tools.test.ts`
- `node node_modules/typescript/bin/tsc -p server/tsconfig.json
--noEmit`
- `git diff --check`

## Risks

- Low risk. The API and numeric offset format do not change.
- Revoked tools remain hidden immediately.
- No database, migration, or public documentation change is required.

## Model Used

- OpenAI GPT-5.6, Codex agent with tool use and code 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)
- [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
2026-10-29 15:36:46 -05:00
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