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Your issues go to press overnight.

How a Run works

One issue in, one pull request out.

-

A Run feeds one issue through four units and delivers a pull request that is ready for review. Units 2 and 3 are one agent session in the Harness you choose. This replay is a historical example, recorded before the newer workflows below. Under each unit are the lines thirdshift printed on stderr during a real Run: issue #24, which produced pull request #25. Click a unit to see what it does. Every prompt and skill it sends is on the Prompts and skills page.

+

A Run feeds one issue through four units and delivers a pull request that is ready for review, or merged in a Merge run. Units 2 and 3 are one agent session in the Harness you choose. Under each unit are lines thirdshift printed on stderr during a real Run, overnight on 12 October 2026. A scheduled Pickup run took issue #663 at 00:21, and its Merge run merged pull request #665 at 01:22. That pull request refreshed the floor plan further down this page. Click a unit to see what it does. Every prompt and skill it sends is on the Prompts and skills page.

@@ -100,7 +100,7 @@

One issue in, one pull request out.

The press line: a feeder, units C, M, Y and K, and a delivery pile - Issue #24 goes in at the feeder and passes through four press units: 1 · C · Prepare, 2 · M · Implement, 3 · Y · Review and 4 · K · Finish. A bracket over units M and Y marks them as one agent session. Pull request #25, ready for review, comes out on the delivery pile. + Issue #663 goes in at the feeder and passes through four press units: 1 · C · Prepare, 2 · M · Implement, 3 · Y · Review and 4 · K · Finish. A bracket over units M and Y marks them as one agent session. Pull request #665, merged into main, comes out on the delivery pile. @@ -116,7 +116,7 @@

One issue in, one pull request out.

- ISSUE #24 + ISSUE #663 FEEDER the issue @@ -172,9 +172,9 @@

One issue in, one pull request out.

- PR #25 · READY + PR #665 · MERGED DELIVERY PILE - ready for review + merged into main
@@ -189,29 +189,41 @@

One issue in, one pull request out.

1 · C · Prepare

-

Pre-flight checks the Origin match, the open issue, the Base branch and the selected Harness, plus Git’s commit identity. thirdshift picks the Issue branch, fresh or a Continuation, claims the issue with in-progress, and creates a worktree next to your clone. This older replay predates Claims.

+

Pre-flight checks the Origin match, the open issue, the Base branch and the selected Harness, plus Git’s commit identity. thirdshift picks the Issue branch, fresh or a Continuation, claims the issue with in-progress, and creates a worktree next to your clone. Here a scheduled Pickup run took the issue.

    -
  1. thirdshift: creating worktree /home/jacob/repos/thirdshift-issue-24 on issue-24 from origin/main
    2. +
  2. thirdshift: 00:21:01 Pickup run starting, 2026-10-12 -0400
    3. +
  3. thirdshift: 00:21:05 taking Ready issue #663 "update https://thirdshift.app/ based on the latest which is part of thirdshift", as thirdshift https://github.com/JacobStephens2/thirdshift/issues/663 would
    4. +
  4. thirdshift: 00:21:05 checking the Model and Effort against codex debug models
    5. +
  5. thirdshift: 00:21:06 logging this command to /home/jacob/.thirdshift/logs/JacobStephens2/thirdshift/commands/pickup/663-20261012T002101-0400.log
    6. +
  6. thirdshift: 00:21:06 sessions run on codex · gpt-6.1-sol · high
    7. +
  7. thirdshift: 00:21:08 updating main in the Launch directory from origin/main
    8. +
  8. thirdshift: 00:21:08 labelling #663 in-progress, in place of ready-for-agent
    9. +
  9. thirdshift: 00:21:10 creating worktree /home/jacob/repos/thirdshift-issue-663 on issue-663 from origin/main

2 · M · Implement

-

A headless session in the selected Harness, with the Factory skills loaded, implements the issue in the worktree, test-first where it can, and commits. The recorded Run used Claude Code.

+

A headless session in the selected Harness, with the Factory skills loaded, implements the issue in the worktree, test-first where it can, and commits. The recorded Run used Codex.

    -
  1. thirdshift: logging the session to /home/jacob/.thirdshift/logs/JacobStephens2-thirdshift-issue-24-20260925T134143Z-implement.jsonl
    2. -
  2. thirdshift: implement: session started
    3. -
  3. thirdshift: implement: $ gh issue view 24 --comments && ls && cat CONTEXT.md | head -80 && ls docs docs/adr
    4. -
  4. thirdshift: implement: $ gh issue view 24 --json title,body,comments,labels && ls && ls docs docs/adr 2>/dev/null; git log --…
    5. -
  5. thirdshift: implement: $ cat src/interrupt.rs && grep -rn "assert_interrupt_fails_the_run\|SIGTERM\|SIGINT\|Signal::" tests/ …
    6. -
  6. thirdshift: implement: $ sed -n 1,40p tests/failed_run.rs && sed -n 150,240p tests/failed_run.rs; grep -rn "fn tmp\|\"tmp\"\|…
    7. -
  7. thirdshift: implement: $ sed -n 40,70p tests/failed_run.rs; sed -n 290,340p tests/support/mod.rs; grep -n "fn run_and_signal"…
    8. -
  8. thirdshift: implement: Edit tests/failed_run.rs
    9. -
  9. thirdshift: implement: $ cargo test --test failed_run sighup 2>&1 | tail -15
    10. -
  10. thirdshift: implement: $ python3 - <<'EOF'
    11. -
  11. thirdshift: implement: $ grep -rni "interrupt\|ctrl-c\|signal" README.md CONTEXT.md docs/adr; cargo fmt && cargo clippy --all…
    12. -
  12. thirdshift: implement: $ sed -i 's/ends, including by Ctrl-C, without/ends, including by Ctrl-C or a closed terminal, without…
    13. -
  13. thirdshift: implement: commit
    14. +
  14. thirdshift: 00:21:10 logging the session to /home/jacob/.thirdshift/logs/JacobStephens2/thirdshift/commands/pickup/663-20261012T002101-0400-implement.jsonl
    15. +
  15. thirdshift: 00:21:11 implement: session started
    16. +
  16. thirdshift: 00:21:19 implement: $ pwd && git status --short && git branch --show-current && cat /tmp/thirdshift-skills-OIZYKN/thirdshi…
    17. +
  17. thirdshift: 00:21:25 implement: $ cat AGENTS.md CONTEXT.md docs/agents/issue-tracker.md docs/agents/domain.md docs/agents/triage-label…
    18. +
  18. thirdshift: 00:21:25 implement: $ gh issue view 663 --repo JacobStephens2/thirdshift --json title,body,comments,labels && git log -5 -…
    19. +
  19. thirdshift: 00:21:30 implement: web search
    20. +
  20. thirdshift: 00:21:30 implement: $ cat CODING_STANDARDS.md && rg --files | rg '("'^site/|web|index.html|landing|pages|astro|package.jso…
    21. +
  21. thirdshift: 00:21:35 implement: $ cat site/index.html site/main.js
    22. +
  22. 7 lines cut: more reading
    23. +
  23. thirdshift: 00:23:41 implement: $ cat > /tmp/issue-663-pr.md <<'EOF'
    24. +
  24. thirdshift: 00:24:13 implement: $ "cat > /tmp/verify-site-663.cjs <<'JS'
    25. +
  25. thirdshift: 00:24:15 implement: $ cargo check --all-targets && cargo test --test share_card --test site_deploy
    26. +
  26. thirdshift: 00:24:25 implement: $ node /tmp/verify-site-663.cjs
    27. +
  27. thirdshift: 00:24:26 implement: $ git diff --check && git diff -- site/index.html site/styles.css
    28. +
  28. thirdshift: 00:24:39 implement: $ python3 - <<'PY'
    29. +
  29. thirdshift: 00:24:48 implement: $ rg -n '\\.unit|\\.floor|hopper' site/styles.css && sed -n '115,160p' site/styles.css
    30. +
  30. thirdshift: 00:25:13 implement: $ python3 - <<'PY'
    31. +
  31. thirdshift: 00:25:26 implement: commit
@@ -219,41 +231,62 @@

3 · Y · Review

The same session reviews its work against the Base branch, fixes the Standards findings and Spec findings it agrees with, and lists the rest as Unaddressed findings in the pull request body. Behavior findings need a test or command that exercises them before the agent decides. It fixes reproduced failures and keeps the test. Then it opens the pull request, ready for review.

    -
  1. thirdshift: implement: skill thirdshift-code-review
    2. -
  2. thirdshift: implement: $ git rev-parse main && git log main..HEAD --oneline && git diff main...HEAD --stat; ls .agents/skills…
    3. -
  3. thirdshift: implement: Agent Standards review
    4. -
  4. thirdshift: implement: $ git diff main...HEAD && cat CODING_STANDARDS.md && ls .agents/skills/codebase-design/ && cat .agents…
    5. -
  5. thirdshift: implement: Agent Spec review
    6. -
  6. thirdshift: implement: $ cat CONTEXT.md; grep -rn -i "sigint\|sigterm\|ctrl-c\|interrupt\|signal" README.md CONTEXT.md docs s…
    7. -
  7. thirdshift: implement: $ gh issue view 24 --json body,comments; git diff main...HEAD
    8. -
  8. thirdshift: implement: $ sed -n 140,240p tests/failed_run.rs; grep -n "fn assert_cleaned_up" -A25 tests/support/mod.rs; grep …
    9. -
  9. thirdshift: implement: $ grep -n "TMPDIR\|fn entries\|fn run_and_signal" -A8 tests/support/mod.rs | head -60; git show --stat…
    10. -
  10. thirdshift: implement: SubagentHandback
    11. -
  11. thirdshift: implement: $ sed -n 145,162p tests/support/mod.rs; cargo test --test failed_run 2>&1 | tail -8
    12. -
  12. thirdshift: implement: $ cargo test 2>&1 | grep -E "test result|FAILED|panicked" | head
    13. -
  13. thirdshift: implement: $ python3 - <<'EOF'
    14. -
  14. thirdshift: implement: SubagentHandback
    15. -
  15. thirdshift: implement: commit and push
    16. -
  16. thirdshift: implement: skill thirdshift-pr
    17. -
  17. thirdshift: implement: $ cat > /tmp/pr24.md <<'EOF'
    18. -
  18. thirdshift: implement: session ended after 3m 40s: 5 turns, $1.06 at API prices
    19. +
  19. thirdshift: 00:26:05 implement: $ git status --short && gh pr list --repo JacobStephens2/thirdshift --head issue-663 --state open --js…
    20. +
  20. thirdshift: 00:26:26 implement: $ cargo fmt --check && cargo clippy --all-targets -- -D warnings
    21. +
  21. thirdshift: 00:26:27 implement: $ git check-ignore .thirdshift-review-ZgRuM9/standards.md; rg -n 'thirdshift-review' /home/jacob/repos…
    22. +
  22. thirdshift: 00:27:10 implement: $ ls -l /tmp/issue-663-standards-initial.md /tmp/issue-663-spec-initial.md 2>/dev/null && cat /tmp/iss…
    23. +
  23. thirdshift: 00:27:13 implement: $ cat /tmp/issue-663-standards-initial.md
    24. +
  24. thirdshift: 00:27:29 implement: $ python3 - <<'PY'
    25. +
  25. thirdshift: 00:27:30 implement: commit
    26. +
  26. thirdshift: 00:27:41 implement: $ cat /tmp/issue-663-spec-initial.md
    27. +
  27. thirdshift: 00:27:53 implement: $ cargo test > /tmp/issue-663-cargo-test.log 2>&1
    28. +
  28. thirdshift: 00:27:54 implement: $ "mkdir -p .thirdshift-review-ZgRuM9 && cp /tmp/issue-663-standards-initial.md .thirdshift-review-ZgR…
    29. +
  29. thirdshift: 00:28:10 implement: $ tail -n 12 /tmp/issue-663-cargo-test.log && git status --short && git log main..HEAD --oneline
    30. +
  30. thirdshift: 00:28:30 implement: $ "cat > /tmp/issue-663-pr.md <<'EOF'
    31. +
  31. thirdshift: 00:28:51 implement: push
    32. +
  32. thirdshift: 00:28:52 implement: $ tail -n 14 /tmp/issue-663-cargo-test.log
    33. +
  33. 20 lines cut: mostly waiting on the full test suite
    34. +
  34. thirdshift: 00:46:48 implement: $ python3 - <<'PY'
    35. +
  35. thirdshift: 00:46:59 implement: $ gh pr view issue-663 --repo JacobStephens2/thirdshift --json number,url,state,isDraft,baseRefName,he…
    36. +
  36. thirdshift: 00:47:13 implement: session ended after 26m 2s: 7416316 input tokens (7285760 cached), 20664 output tokens

4 · K · Finish

-

thirdshift pushes, checks the pull request, merges the Base branch in and watches CI. A merge conflict or failing CI starts a Repair, at most 5. A Resume can happen in any session and isn't a Repair. The Run ends once the pull request is open, ready, mergeable and passing CI. An optional Security review checks the change before Delivery. With thirdshift merge <Issue URL>, thirdshift also merges the reviewed head once its checks pass. This recorded Run needed no Repair and left its pull request for review.

+

An optional Security review checks the change first. Then thirdshift pushes, checks the pull request, merges the Base branch in and watches CI. A merge conflict or failing CI starts a Repair, at most 5. A Resume can happen in any session and isn't a Repair. The Run ends once the pull request is open, ready, mergeable and passing CI. A Merge run, from thirdshift merge <Issue URL> or the User config, then merges it. Here the Security review found nothing, main moved during CI and was merged in again, and no Repair was needed.

    -
  1. thirdshift: pushing issue-24
    2. -
  2. thirdshift: checking the PR
    3. -
  3. thirdshift: merging origin/main into issue-24
    4. -
  4. thirdshift: pushing issue-24
    5. -
  5. thirdshift: waiting up to 60s for CI on f32bc95
    6. -
  6. thirdshift: CI on f32bc95: 1 of 1 checks still running
    7. -
  7. thirdshift: CI passed on f32bc95
    8. -
  8. thirdshift: checking the PR is open, ready and mergeable
    9. -
  9. thirdshift: cleaning up the worktree and local branch issue-24
    10. -
  10. thirdshift: PR https://github.com/JacobStephens2/thirdshift/pull/25 is ready for review
    11. +
  11. thirdshift: 00:47:13 Security review private report: /home/jacob/.thirdshift/logs/JacobStephens2/thirdshift/security-reviews/663-20261012T002101-0400-0eoBGA/pre-existing.json
    12. +
  12. thirdshift: 00:47:13 logging the session to /home/jacob/.thirdshift/logs/JacobStephens2/thirdshift/commands/pickup/663-20261012T002101-0400-security-review.jsonl
    13. +
  13. thirdshift: 00:47:14 security-review: session started
    14. +
  14. thirdshift: 00:47:14 security-review: Model: gpt-6.1-sol (requested)
    15. +
  15. thirdshift: 00:47:23 security-review: $ git status --short --branch
    16. +
  16. thirdshift: 00:47:23 security-review: $ cat .agents/skills/thirdshift-security-audit/SKILL.md
    17. +
  17. 28 lines cut: the review reading and checking the change
    18. +
  18. thirdshift: 00:49:54 security-review: session ended after 2m 41s: 981609 input tokens (882304 cached), 5030 output tokens
    19. +
  19. thirdshift: 00:49:54 pushing issue-663
    20. +
  20. thirdshift: 00:49:56 writing "Built with codex · gpt-6.1-sol · high" in the pull request's body
    21. +
  21. thirdshift: 00:49:57 checking the PR
    22. +
  22. thirdshift: 00:50:01 merging origin/main into issue-663
    23. +
  23. thirdshift: 00:50:03 pushing issue-663
    24. +
  24. thirdshift: 00:50:05 waiting up to 60s for CI on c16e780
    25. +
  25. thirdshift: 00:50:07 CI on c16e780: 6 of 8 checks still running
    26. +
  26. 5 lines cut: CI still running
    27. +
  27. thirdshift: 01:00:40 CI passed on c16e780
    28. +
  28. thirdshift: 01:00:41 origin/main moved while CI ran; merging it again
    29. +
  29. thirdshift: 01:00:42 merging origin/main into issue-663
    30. +
  30. thirdshift: 01:00:43 pushing issue-663
    31. +
  31. thirdshift: 01:00:45 waiting up to 60s for CI on 545e42f
    32. +
  32. thirdshift: 01:00:57 CI on 545e42f: 6 of 6 checks still running
    33. +
  33. 9 lines cut: CI still running
    34. +
  34. thirdshift: 01:22:47 CI passed on 545e42f
    35. +
  35. thirdshift: 01:22:48 checking the PR is open, ready and mergeable
    36. +
  36. thirdshift: 01:22:49 merging the PR into main
    37. +
  37. thirdshift: 01:22:49 checking the PR is open, ready and mergeable
    38. +
  38. thirdshift: 01:22:53 deleting issue-663 on origin
    39. +
  39. thirdshift: 01:22:54 cleaning up the worktree and local branch issue-663
    40. +
  40. thirdshift: 01:22:55 removing in-progress from issue #663
    41. +
  41. thirdshift: 01:22:56 PR https://github.com/JacobStephens2/thirdshift/pull/665 is merged
@@ -261,26 +294,26 @@

4 · K · Finish

-

The implement: lines are the Run's session log passed through thirdshift's own progress condensing. The other lines are thirdshift's progress messages, filled in with pull request #25's branch, commit and CI result. The session's duration is rebuilt from its log file's timestamps, so thirdshift may have printed 3m 41s.

+

The lines are copied, timestamps and all, from the Pickup run's Command log, which keeps everything thirdshift printed. Each cut for length says how many lines it left out; there are 139 lines on stderr in all.

@@ -422,18 +455,18 @@

The factory grows

Proof sheets

Pulled from the press

Real pull requests thirdshift made on its own repository. Judge the work yourself.

Does a second reviewer catch what thirdshift's own review lets through? 183 replayed reviews, Codex against a fresh Claude session: Fresh Eyes Beat a Second Family.

diff --git a/site/share-card.png b/site/share-card.png index 17c4d6ab..c974cb21 100644 Binary files a/site/share-card.png and b/site/share-card.png differ diff --git a/site/styles.css b/site/styles.css index 7e192c1c..f0ca7e1c 100644 --- a/site/styles.css +++ b/site/styles.css @@ -159,6 +159,8 @@ body::after { /* scanlines */ .stderr-lines .prefix { color: var(--dim); } .stderr-lines .ready { color: var(--nc); } .stderr-lines .failed { color: var(--m-text); } +/* A line standing in for lines cut from a quoted log: dim, as the prefixes are. */ +.stderr-lines .cut { color: var(--dim); } .press-source { margin: 16px 0 0; font-size: 13px; color: var(--dim); max-width: 90ch; } .misprint { margin-top: 36px; border: 1px solid var(--m); padding: 16px 18px; display: grid; gap: 10px; max-width: 90ch; } .misprint h3 { font-size: 26px; color: var(--m-text); }