## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work. > - A native task must save its files before finalization can release its writer. > - Remote workspace capture can produce an archive that fits on the sandbox disk. > - Daytona then makes another copy before it downloads that archive. > - The second copy can run out of space and leave completed work behind a save hold. > - This pull request uses the existing bounded stream when that copy cannot fit. > - The benefit is a saved archive without a second archive-sized sandbox allocation. ## Linked Issues or Issue Description Related: #18644 reduced capture scratch space. #18172 added the disk-free directory export. #18705 preserves provider checkpoints on a full disk and reports capture failures. This change handles the later single-file download copy. It does not depend on #18705 and does not replace its checkpoint fix. **What happened?** A native provider turn returned a successful result and captured its workspace archive. The Daytona outbound file guard then failed with exit 43 and `No space left on device` while it copied the archive to a reserved download file. Finalization and file-preservation retries could not pass this boundary. The workspace kept its writer hold. **Expected behavior** Download an existing archive through a confined sandbox process when its second copy cannot fit. Keep the source and all finalization holds until the normal save commits. **Steps to reproduce** 1. Capture a workspace archive in a Daytona sandbox. 2. Leave less free space than the archive needs for another copy. 3. Finalize the task. The outbound single-file guard fails before download. **Paperclip version or commit** Reproduced against `6d72243d8a`. The incident used the native sandbox runtime. This branch is based on current master. **Deployment mode** Cloud with native Paperclip Runner execution and remote workspace storage. ## What Changed - Remove partial outbound file copies after a failed snapshot command. Only copy capacity failures select the stream path. Permission, confinement, and transport errors still fail. - Use the existing acknowledged terminal stream to read each file as the sandbox user. Recheck canonical confinement and regular-file status. Use a no-follow open. Keep the sandbox disk limit, host free-space reserve, shared transfer deadline, and bounded teardown. - Keep host files in private temporary files until the complete batch has transfer receipts. Never pass a mutable live source to the privileged download API. - Add real-file and real-terminal regressions, a disposable Daytona acceptance case, and workspace verification notes. ## Verification - Red before repair: a real 5 MiB copy under a controlled file-size limit failed with exit 43. The same test passes after repair and compares every source and destination byte. - The ten capacity cases pass. They cover producer failure after output, source replacement, stream size limits, permission errors, timeout teardown, cleanup, and a successful retry. A two-file case completes the first stream and fails the second. Both old host files stay intact, both source files survive, and retry saves both files. An isolated early-publication mutation makes that test fail. - The initial complete Daytona package suite passes: 537 tests passed, 8 skipped. After the test-only review follow-up, all 60 focused transfer, stream, and diagnostic tests pass. The package typecheck also passes. - Real Daytona acceptance passes: an owned Ubuntu 24.04 sandbox stops and resumes, a copy to `/dev/full` reports ENOSPC, production export saves the exact archive hash, and a second save after reconnect passes. The test deletes only its disposable sandbox. This is provider-boundary acceptance, not a UI journey. - Assembled finalization acceptance passes with real Postgres and a live Linux x86_64 Daytona sandbox. The production control-plane port accepts one fixture result. The production workspace finalizer encounters the failed copy, saves the files, and commits the task as `done`. A new database client reads the committed result and exact file hash. The workspace has no writer or running save, and there is still one run and one result. No model turn runs. The target resolver is bound to the live provider fixture. Object storage uses the production encryption and local-disk service with an S3 admission label; this does not prove an S3 network transfer or a UI journey. - The live tests used the fixed transfer source with SHA-256 `857b3d8c9ad75170707d95277c17c051ce4582fa79a9c38331d51d2800b36af5`. That source is identical in this PR head. - `pnpm -r typecheck` passes locally. The duplicate full local test run passed all six chat shards before it was stopped during the server lane in favor of completed current-head CI; a duplicate local build was skipped. Full current-head CI passes, including typecheck, build, general and serialized tests, Rust/Runner checks, all eight E2E shards, and the `ci / e2e` and `ci / verify` aggregate gates. - Greptile is 5/5 on the current commit with no unresolved review threads. - `node scripts/check-maps.mjs` and `git diff --check` pass. Map checks prove structure only. ## Risks - The fallback requires the Bash and GNU `dd`/`base64` tools already required by the existing stream path. - Terminal streaming is slower than the normal bulk download. It runs only after a copy capacity failure. - The workspace capture itself still needs sandbox space. This change does not fix a full disk before an archive exists. - The test injects a failed copy sink. It does not exhaust a shared host disk. No original task was retried, and no deployment or merge is part of this PR. - No schema, API permission, writer ownership, or retry-budget change. ## Model Used OpenAI GPT-6 through Codex, with reasoning, repository inspection, code editing, shell tools, browser diagnostics, and automated tests. The exact serving variant 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 (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>
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Execution workspaces, services, and files — agent access
Product map: Execution workspaces, services, and files.
Feature ID: workspaces.
Lost-source reconstruction adds the board-only
POST /api/issues/{id}/recovery-actions/reconstruct-workspace action. It requires
runtime:manage and ordinary task visibility. Agents cannot authorize it. The
result is a durable fresh-session admission request, subject to current execution
gates. It grants no additional tool access, budget, work window or permission to
repeat completed actions. Attachments must belong to the same task and company.
The original failed run and lost-export evidence remain unchanged.
Later native run-only cancellations can coexist only with confirmed lease stops,
board file-only repair and an external-action outcome of not_performed.
Their immutable evidence is checked again at dispatch. Historical cancellation
retention runs internally and grants no new agent operation or authority.
Review date: 2026-10-12. Source commit: 58e16dbddfc9c8d0cf60867f9d9847f0feda055b.
Native REST transport reconciled in this change; see the
shared transport contract.
This is a source-reviewed baseline of representative operations and known gaps. Each capability needs operation-level review before its entire scope can be qualified. No live agent execution is claimed. Follow the map contract for format, permission checks, evidence and maintenance.
binding
Capability ID: workspaces/binding.
Review: baseline.
API: present — representative operation IDs:
GET /api/issues/{id}/heartbeat-context.GET /api/execution-workspaces/{id}.GET /api/issues/{id}/workspaceinspects the durable task binding.PUT /api/issues/{id}/workspacerequests the next binding.GET /api/companies/{companyId}/execution-workspaces?summary=true&selectableForTask=truelists authorized task-selectable workspaces.
Agent access: available — Native get_task_context / REST / CLI / MCP workspace read.
The task-bound native tools get_workspace, list_workspaces, and
select_workspace use the ordinary authenticated APIs. Legacy agents can call
those APIs with their admitted run token. These paths do not require a project.
Policy: Company/project/workspace visibility and runtime authority; active run, trust preset and task ownership where required.
Ordinary input may reuse the exact currently bound private task directory after an explicitly fresh retry. Preparation rechecks company, source task, current binding and canonical path; missing directories, symlinks and foreign roots are rejected. This preserves files without granting new access or replaying the previous turn. An explicitly fresh retry still creates a clean sibling.
Task workspace writes require issue:mutate, an active owned task/run for agents,
and current source visibility. Shared physical roots also require source-project
workspace write authority. Accepting a new pending choice advances its binding
revision; superseded retries fail while current-choice retries remain idempotent.
Binding revisions and request keys fence retries;
selection applies at the next normal admission without interrupting a live run.
The managed remoteWorkspaceStorageEnabled setting defaults on for Cloud and
self-hosted instances. New native Paperclip Runner sandbox workspaces with
supported fresh sources reserve company/task-bound remote authority through
existing admission only when durable Postgres, S3, and a stable key are configured.
Existing host workspaces and configured local folders stay on the legacy path
until an explicit import. Stored false disables new enrollment unless managed
configuration overrides it. Enrolled workspaces keep remote authority when new
enrollment is disabled, and missing persistence prerequisites fail admission
without a controller checkout fallback. Current authorization and responsible-user
checks still apply;
read-only cross-project referenced folders and explicitly concurrent shared
writers are rejected. Managed mutable same-project repositories are supported.
Portable capture streams validated working files while staging self-contained
Git metadata. The smaller temporary-space requirement grants no new agent access
or execution authority. Changed sources still fail before a save receipt.
Daytona can stream an already captured archive when its guarded download copy
cannot fit. The sandbox-user read rechecks confinement and refuses symlinks at
open; it does not grant the privileged download API access to a mutable source.
Snapshot publication and the single-writer fence keep their existing authority.
An inherited isolated workspace or operator branch can be reserved through the
task's current persisted binding. The original source task remains provenance.
Reservation checks task/run, binding, trust, and retained source visibility before
claiming the single writer; an unbound task cannot claim that workspace.
A live writer conflict at atomic reservation uses the existing workspace wait,
including inherited isolated workspaces and operator branches. The retry retains
the binding and current admission gates; Stop cancels it. Stale or stopped
writers with unfinished saves remain fenced. The wait retains the admitted
assignment role; reassignment during preparation cancels the old assignee's retry.
The
preparation tests
and heartbeat tests
cover reservation and persisted waits with PostgreSQL; live sandbox
provider acceptance remains separate.
The reservation tests
exercise that service boundary with real PostgreSQL, including competing children,
private sources, foreign companies, and closed records. This is automated evidence,
not live agent qualification.
Importing an existing local task folder is an operator source-checkout command,
not an agent API or tool: see the
dry-run/apply runbook.
It requires deployment storage/key access and blocks unfinished writers/recovery.
Source: remote source admission
and migration.
Evidence: source-only for these additions; live agent qualification is separate.
Admission checks current task/run authority and the persisted selected configuration.
It does not inventory physical aliases or authorize historical sources/readers.
Explicit workspace-record selection and full workspace metadata disclosure retain
app-record privacy. Existing isolated remote-source receipts remain restorable;
new preparation does not create a remote fallback due to historical file ownership.
Historical workspace_source_restricted failures retain existing recovery support.
An authorized board recovery through POST /api/issues/{id}/recovery-actions/resolve
can schedule a server-owned recovery selection for the latest restricted-source
failure only when its saved evidence proves provider work never started. The
selection requires task mutation and configured-source access and applies at normal
admission. It keeps task environment settings and never reads or deletes the denied
checkout. Pause, budget, approval, interaction, dependency, and ownership gates
remain effective. Repeated resolution of the same action does not enqueue another
run. Agents cannot mint recovery provenance through the workspace selection API;
they can observe the existing recovery action and request board recovery.
Local paths, unsupported transports and credential-bearing URLs are not fallback
sources. Company/task/remote bindings, real paths, Git storage and the exact origin
are revalidated for reuse, cleanup and reopening. A failed save removes only the
owned task worktree. The isolated-source service
and its local regression tests establish source and lifecycle boundaries; live
agent/provider qualification remains separate.
Reconstructable Git expiration adds no agent endpoint or permission. It records
company/workspace/repository identity and an exact commit before removing owned
cache files. Existing task/workspace reopening retains current company, source,
and trust checks. Missing upstream access returns a retryable error; it does not
choose a newer commit or grant access to another company's source. Shared project
bases and unresolved recovery remain protected. Local lifecycle evidence is in
expiration tests.
Only directly selected configuration policies participate in current execution trust. Physical aliases and historical source projects do not contribute filesystem policy. The authoritative sandbox or SSH selection suppresses configured and built-in controller worktree and runtime provisioning regardless of task trust, app configuration write grants or board sponsorship. Genuine isolated worktrees still permit authorized read-only source copying. Configuration write permission does not authorize controller execution. Explicit, channel, inherited, foreign or nondefault isolated source choices remain copy-only for controller provisioning even on local runs. Their deny-only workspace marker survives metadata and binding changes; a board reopen does not turn it into approval. Implicit trusted local defaults and explicit SSH remote provisioning retain their existing placement; no new sandbox provision transport is claimed. The implicit default follows task creation: configured policy pointer, then primary source, creation time and ID. A missing or foreign configured source does not authorize controller hooks. This precedence neither changes existing creation validation nor rotates bindings or clears retained copy-only markers. Closed-worktree reopening checks current task, agent, organizational and source policies without assuming a future driver. Effective low-trust reopens suppress configured and built-in host scripts. Returned checkpoints must have directory parents for every nested entry before merging, including unchanged entries; invalid output leaves retained host files intact and keeps recovery evidence.
Skipping the host scan for a fully unchanged returned snapshot grants no new access. The merge still holds its canonical writer lock and runs both authority and publication hooks. Denials still propagate, and checkpoint/archive validation is unchanged. Regression coverage is source-level evidence only. Child creation by an admitted agent checks an explicit prospective-task context before the child is saved. The creator run must have an authoritative saved policy and a verified company/agent/parent lineage. Current parent, prospective child and selected source configuration policies must fit that boundary. This creation path does not relax exact task/run checks for existing-task writes. The child trust regression is automated source-level evidence, not live agent qualification. Source review for these additions: PR #15749 and task workspace routes, native authority, and semantic transport.
Evidence: source-only —
implementation at the
reviewed commit above.
Verification: not-run — exercise a listed permitted operation with actual agent
credentials/run context; inspect its result and applicable persistence/attribution.
Assert the relevant denied actor, owner, company or mode from Policy. Review the
remaining operations before qualifying the whole capability.
Gaps: Run/task context identifies its actual realized workspace; record existence is not a running service.
provisioning
Capability ID: workspaces/provisioning.
Source preparation keeps its dedicated lock connection active during work on other connections. It preserves company/source exclusion and existing admission authority; it adds no agent API or permission. The source-lock regression covers PostgreSQL idle timeout, competing preparation, ordinary pool availability, and failure cleanup. Deployed agent recovery requires separate live evidence.
Review: baseline.
API: present — representative operation IDs:
GET /api/execution-workspaces/{id}.GET /api/execution-workspaces/{id}/workspace-operations.POST /api/issues/{id}/workspace/repositoriesrequests repository preparation.
Agent access: partial — REST / native call_api reads; task/project assignment triggers
server provisioning.
Native prepare_repository and admitted legacy REST callers can request a
catalog repository or validated repository URL for their current task.
Preparation occurs at normal admission; the agent cannot supply a host path or
controller identity. Current selected-configuration permissions, responsible-user authority, trust
restrictions, immutable receipts, and concrete binding/path integrity are checked
before acquisition and publication. Low-trust callers cannot trigger a
new controller-side Git acquisition. Evidence remains source-only here; focused
repository tests
are separate from live agent qualification.
An admitted native standard task can read a same-agent completion continuation for its own pending repository in its current workspace. An explicit yield may use that saved continuation; explicit completion remains completion. Existing status decisions and wake admission retain Stop and authorization gates. The workspace API regression and driver regression cover this contract; live qualification remains separate.
Policy: Company/project/workspace visibility and runtime authority; active run, trust preset and task ownership where required.
Evidence: source-only —
implementation at the
reviewed commit above.
Verification: not-run — exercise a listed permitted operation with actual agent
credentials/run context; inspect its result and applicable persistence/attribution.
Assert the relevant denied actor, owner, company or mode from Policy. Review the
remaining operations before qualifying the whole capability.
Gaps: Observing readiness exists. Creating host commands or arbitrary provision targets is a separate protected operation.
services
Capability ID: workspaces/services.
Review: baseline.
API: present — representative operation IDs:
POST /api/execution-workspaces/{id}/runtime-services/{action}.
Agent access: available — Authorized agent REST / native call_api / CLI runtime
service controls and existing stdio MCP controls.
Policy: Company/project/workspace visibility and runtime authority; active run, trust preset and task ownership where required.
Evidence: source-only —
implementation at the
reviewed commit above.
Verification: not-run — exercise a listed permitted operation with actual agent
credentials/run context; inspect its result and applicable persistence/attribution.
Assert the relevant denied actor, owner, company or mode from Policy. Review the
remaining operations before qualifying the whole capability.
Gaps: No dedicated production control_workspace_service binding. Generic native calls retain runtime trust and workspace/task scope checks. Optional MCP availability must be recorded.
files-git
Capability ID: workspaces/files-git.
Review: baseline.
API: present — representative operation IDs:
GET /api/issues/{issueId}/file-resources/content.GET /api/issues/{issueId}/file-resources/list.
Agent access: partial — Authorized workspace filesystem tools; Dot workspace bridge
when enabled; board file-resource HTTP UI. Native standard-mode download_artifact
installs an authorized saved asset (up to 10 MiB) into the admitted workspace,
requiring exact saved size/hash. Linux local and lease-owned remote command
runners are supported; plugin task providers without an installer and Dot/Muse/Grok
profiles do not expose it. The tool follows API rollout policy, current task/run,
issue mutation and asset-content ACLs, including responsible-user capture ownership.
Publication is create-only after staging/hash checks; conflicting files and symlink
paths fail. Retry the identical identity after an unknown outcome. Audit records
contain identity/outcome only; contents remain untrusted and screening still applies.
The authority regression
and filesystem faults
use disposable data and real files; provider transport qualification is separate.
Policy: Company/project/workspace visibility and runtime authority; active run, trust preset and task ownership where required.
Evidence: source-only —
implementation at the
reviewed commit above.
Verification: not-run — exercise a listed permitted operation with actual agent
credentials/run context; inspect its result and applicable persistence/attribution.
Assert the relevant denied actor, owner, company or mode from Policy. Review the
remaining operations before qualifying the whole capability.
Gaps: Files panel HTTP requires board. Agents can use their admitted workspace file tools; remote/Dot scope and Git command availability differ.
Task-bound file reads authorize the current task, company, and concrete binding; selected project roots require selected configuration access. Historical task, reader, physical-root, and directory acquisition classifications have no effect. Root containment and symlink escape checks remain, and attachments, task records, workspace metadata, and operation logs retain their app-data privacy.
For enrolled remote workspaces the same board file-resource endpoints read the
authorized live allocation or a verified committed saved version. Returned
source.kind is live or saved, with savedAt for a saved copy. An unavailable
clean allocation does not prevent reads of its current committed save once
writer authority is clear; saved reads validate the exact company, workspace,
and snapshot even while a remote location remains recorded. Cleanup may clear
only that location during a saved read; logical-authority changes and foreign
or reintroduced locations still reject it. Live reads retain their full fence. An unavailable
dirty allocation cannot silently fall back to stale saved bytes. Remote paths
never become controller filesystem authority. Confined path/symlink checks,
bounded search/preview, download streaming, and cancellation remain enforced by
remote file access.
Evidence: source-only here; regression suites are not a live agent read proof.
Verification: not-run — exercise allowed live/saved reads and deny another
company, changed binding, traversal, and unsaved-allocation fallback.
closure
Capability ID: workspaces/closure.
Review: baseline.
API: present — representative operation IDs:
PATCH /api/execution-workspaces/{id}.GET /api/execution-workspaces/{id}/close-readiness.POST /api/execution-workspaces/{id}/reconcile-branch.
Agent access: partial — REST / native fallback for permitted update; CLI workspace;
reconcile-branch requires board.
Policy: Company/project/workspace visibility and runtime authority; active run, trust preset and task ownership where required. Workspace metadata reads do not perform storage inspection or certify delivery. The explicit close-readiness API and destructive cleanup retain live safety checks. Automatic GitHub delivery checks reuse explicit source-project GitHub consent, rechecking the stored repository, selected grant, project access and trust on each proof. Missing or revoked consent never falls back to another identity. The resolved destination and provider recovery hint cannot be supplied as an authorization override through workspace metadata. Ambiguous or inaccessible proof retains storage.
Evidence: source-only —
implementation at the
reviewed commit above.
Verification: not-run — exercise a listed permitted operation with actual agent
credentials/run context; inspect its result and applicable persistence/attribution.
Assert the relevant denied actor, owner, company or mode from Policy. Review the
remaining operations before qualifying the whole capability.
Gaps: Closure/readiness exists; not every workspace can be reopened, and branch reconciliation has a board boundary.
Remote closure additionally requires a clean committed snapshot and no active
writer. It releases confirmed remote compute while retaining the saved authority;
reopen restores from that saved version when the allocation is gone. Custom
cleanup/teardown commands block remote close. Manual runtime commands, jobs,
repairs, and services reject remote workspaces before local filesystem access.
Agent tasks remain the supported execution path. No new agent authority is granted.
Source: remote lifecycle
and close readiness.
Evidence: source-only for the remote extension. Verification: not-run —
reject dirty/unfinished/custom-command close, confirm clean release retains the
snapshot, then reopen under current task/company authorization.