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## Thinking Path > - Paperclip manages AI agents and their work. > - Runner Evals test provider behavior against a mock control plane. > - A campaign budget needs to observe and admit each provider request. > - The existing eval CLI does not select the provider-home mode needed for a controller-assigned route. > - A proxy URL alone therefore cannot establish controlled Codex routing. > - This change adds an explicit route with an isolated home and retained identity. > - The controller can use that route as the basis for request accounting and admission. ## Linked Issues or Issue Description **What happened?** The direct Runner eval CLI passes the ambient environment to the native transport. The transport deliberately removes an environment-only preconfigured-home marker unless its explicit option is also set. This prevents a controller from assigning a Codex gateway through that marker alone. **Expected behavior** A controller can explicitly route a supported eval attempt through its local proxy. The provider receives the proxy token and isolated configuration. The artifact identifies the assigned route on success and failure. Ordinary direct runs keep their current path. **Steps to reproduce** Run the new CLI tests for `--gateway-config`. They validate the descriptor, inspect the actual transport inputs and provider sanitizers, and check retained artifacts and owned-home cleanup. The local probe also ran built native Codex and ACPX Claude against a fake loopback API using only synthetic credentials. Related request-accounting work: https://github.com/paperclipai/paperclip/pull/17432. ## What Changed - Add an explicit gateway descriptor bound to the requested provider, exact model, campaign, execution, and attempt. - Accept only the controller's IPv4 loopback URL and a separate proxy token. - Create a fresh provider home for native Codex and ACPX Claude. Exclude ambient provider credentials, subscription logins, proxies, and startup hooks. - Retain route identity and descriptor hash in successful and failed artifacts. Remove the owned home in finalization. - Document the CLI contract and its limits. The Runner eval CLI owns this behavior. It uses the existing native preconfigured-home contract. Production routing, permissions, and provider protocols are unchanged. ## Verification - Initial verification passed 56 focused gateway/CLI tests and 246 CLI and adjacent provider-isolation tests. After the admission repair, all 247 CLI and adjacent provider-isolation tests passed, with TypeScript checks and build passing again. - Runner TypeScript checks and build passed. - The native daemon rebuilt from the candidate base with locked, offline dependencies. - Local fake-API probe: six authenticated Responses requests from native Codex and six authenticated Messages requests from ACPX Claude reached the assigned endpoint. Claude also made an unauthenticated hello check. The final commit retained both route artifacts. All 27 retained files were scanned for the synthetic proxy token and contained none. Both temporary homes were removed, and all four recorded provider/daemon PIDs were absent after exit. - The fake API intentionally rejected inference. Codex retained a failed turn; Claude retained a timeout. These are route observations, not passing semantic evals or live provider qualification. No paid provider calls ran. - The first focused command used the wrong directory and discovered no tests. It was corrected before the successful runs above. - Full Runner validation: 3,967 tests passed, 13 skipped, and five failed in three unchanged installation and native-settlement files. The failures were two installation timeouts and three retained-cleanup settlement failures. One isolated run passed all 109 applicable tests with six skips. This shows recovery, not a proven cause for the original five failures; those remain retained. Hosted [CI 40111220754](https://github.com/paperclipai/paperclip/actions/runs/40111220754) passed on final commit `a5c47b64e56c1228fca718b72a81ddc3b1d185a4`, including repository typecheck, build, tests and Runner checks. All 57 checks passed or were neutral/skipped, and the legacy status passed. Greptile and Paperclip reviews both scored 5/5 on that commit; no findings remain unresolved. - Rebased onto current master `71c04c0bfb205cc9e7f7bc20c29fd76051b44cc4`. Its added change concerns server cleanup; Runner source is unchanged. - An actual ACPX Codex probe failed before reaching the fake API. Review and source inspection confirmed that Runner deliberately rejects its preconfigured home to protect Runner state. This route is now rejected before service creation. Both explicit and default ACPX Codex admission regressions failed before the repair. The unsupported lane is not presented as qualified. ## Risks This is an explicit new CLI route. Unsupported providers fail before service creation. Upstream route is a controller declaration, not independent billing evidence. The local probe saw six Codex requests where legacy usage counted one, so the controller's request ledger must remain the budget source. Campaign allocation, proxy lifecycle, hosted workflow wiring, dedicated OTLP relay routing, and paid qualification are separate remaining integration steps. This PR enables none of those schedules. ## Model Used OpenAI Codex, GPT-6 family, with reasoning, tool use, and code execution. The exact serving model ID and context-window size are not exposed in this session. ## Checklist - [x] I have included a thinking path that traces from project context to this change - [x] I have specified the model used, including the information available in this session - [x] I checked ROADMAP.md; this is eval infrastructure, not a competing core feature - [x] I searched for duplicate PRs for this exact route change - [x] I described the issue in-PR using the bug template labels - [x] I have not referenced internal or instance-local issues - [x] My branch describes the change and contains no internal issue ID - [x] Relevant focused tests pass - [x] I added tests for the new contract and lifecycle - [x] I updated the relevant documentation - [x] I described the risks and unqualified behavior - [x] All current-head Paperclip CI gates are green - [x] Current-head Greptile is 5/5 with no unresolved findings - [x] I will address review findings before merge --------- Co-authored-by: Paperclip <noreply@paperclip.ing>