swe-2

Running swe-2 inside devin.

Workflow

FastAPI: Add POST /api/v1/projects/{project_id}/tasks endpoint Plan → Review plan → Execute → Review & fix → Open PR → Verify PR → Verify e2e

Every run uses the same steps in the same order. Full workflow definition →

All steps run as one workflow, inside a single Docker container.

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5 of the 10 steps are agent sessions, each started fresh: only the repository working tree and the previous step's output carry over. Host steps orchestrate and verify, and cost nothing.
#	Step	Kind	What happens
1	`pullIssue`	host	Fetches the GitHub issue and creates a branch
2	`plan`	agent	Drafts a plan from the ticket, including tests
3	`reviewPlan`	agent	Always runs; returns the full final plan
4	`execute`	agent	Implements the landing page; may run repeated preview captures; no harness step timeout
5	`reviewAndCorrect`	agent	Visual review against the brief and reference render; fixes layout and copy; no harness step timeout
6	`openPullRequest`	agent	Commits, pushes, opens a pull request into main
7	`verifyPullRequest`	host	Checks that the exact pull request is open
8	`verifyPullRequestCheck`	host	Waits for the required end-to-end check to pass
9	`summarizeUsage`	host	Totals tokens and cost
10	`score`	host	Records the final result

Run 1 2026-09-13 · standard · high $1.10 PASS

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Agent steps start a fresh session. Host steps are included in the run cost.
Step	Status	Cost	Time	In tok	Out tok	Tools
pullIssue	succeeded	$0.00	—	0	0	0
plan	succeeded	$0.19	1m 20s	28,474	5,907	24
reviewPlan	succeeded	$0.16	1m 32s	15,923	5,974	20
execute	succeeded	$0.36	2m 07s	33,313	7,139	40
reviewAndCorrect	succeeded	$0.23	1m 34s	31,053	4,281	24
openPullRequest	succeeded	$0.15	0m 47s	30,055	1,783	11
verifyPullRequest	succeeded	$0.00	0m 01s	0	0	0
verifyPullRequestCheck	succeeded	$0.00	0m 21s	0	0	0
summarizeUsage	succeeded	$0.00	—	0	0	0
score	succeeded	$0.00	—	0	0	0