[pranaygp]

Catches the docs up with SDK changes that shipped in the last day without (complete) docs updates.

Change	Source PR	Docs edit
New Connecting from outside a deployment guide on the Vercel World page	#3989	The two pages people land on when they hit this from the other side now point at it. start()'s deploymentId: "latest" callout said external callers authenticate with VERCEL_TOKEN; the SDK actually prefers the World's explicit token and only falls back to VERCEL_TOKEN (same on stable), which is what the new guide tells readers to pass. The Observability page's Vercel backend section only covered vercel login; it now says what to set without one (such as in CI) and links the guide. Applied to v4 and v5.

#3989 was the only change on main since the last docs catch-up (#4904, still open, covers #4757), and it documented itself on the Vercel World and configuration pages; this only fills in the cross-references it missed.

Docs Preview

Page	v5	v4
start(): deploymentId: "latest" callout	/docs/api-reference/workflow-api/start	/v4/docs/api-reference/workflow-api/start
Observability: Vercel backend	/docs/observability#vercel-backend	/v4/docs/observability#vercel-backend

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[changeset-bot]

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Latest commit: b413822

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[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated
example-nextjs-workflow-turbopack	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC
example-nextjs-workflow-webpack	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC
example-workflow	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC
workbench-astro-workflow	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC
workbench-express-workflow	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC
workbench-fastify-workflow	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC
workbench-hono-workflow	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC
workbench-nestjs-workflow	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC
workbench-nitro-workflow	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC
workbench-nuxt-workflow	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC
workbench-python-workflow	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC
workbench-sveltekit-workflow	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC
workbench-tanstack-start-workflow	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC
workbench-vite-workflow	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC
workflow-docs	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC
workflow-swc-playground	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC
workflow-tarballs	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC
workflow-web	Ready	Preview, v0	Oct 19, 2026 4:07pm UTC

[github-actions]

Sim World

Simulated world deterministic testing for races. Traces

🟢 world-sim scenario book — 0 fail of 42 total

fence=per-spec

scenario	outcome	events	virt	replay	violations
✅ smoke-no-steps	completed	3	0ms	ok	0
✅ smoke-one-step	completed	6	0ms	ok	0
✅ hook-at-step-started	completed	12	0ms	ok	0
✅ hook-at-step-completed	completed	12	0ms	ok	0
✅ hook-at-hook-created	completed	12	0ms	ok	0
✅ deadline-hook-wins	completed	7	1.0h	ok	0
✅ deadline-expires	completed	7	1.0h	ok	0
✅ step-vs-timer-early-settlement	completed	8	1.0h	ok	0
✅ long-sleep	completed	11	30.0d	ok	0
✅ hook-never-arrives	stalled	3	0ms	skipped	0
✅ step-retries-twice	completed	10	2.0s	ok	0
✅ parallel-steps	completed	9	0ms	ok	0
✅ hook-on-execution-state	completed	12	0ms	ok	0
✅ peek-hook-before-branch	completed	12	0ms	ok	0
✅ peek-hook-after-branch	completed	12	0ms	ok	0
✅ peek-hook-at-registration	completed	12	0ms	ok	0
✅ race-hook-before-probe	completed	12	0ms	ok	0
✅ race-hook-after-probe	completed	12	0ms	ok	0
✅ race-duplicate-delivery	completed	13	0ms	ok	0
✅ attr-hook-before-step	completed	11	0ms	ok	0
✅ attr-hook-after-step	completed	11	0ms	ok	0
✅ attr-from-step-body	completed	13	0ms	ok	0
✅ fork-hook-after-timeout	completed	14	1.0m	ok	0
✅ fork-hook-before-timeout	completed	14	1.0m	ok	0
✅ count-hook-after-timeout	completed	17	1.0m	ok	0
✅ count-hook-before-timeout	completed	20	1.0m	ok	0
✅ stale-read-step-count-fork	completed	20	1.0m	ok	0
✅ stale-read-equal-step-counts	completed	14	1.0m	ok	0
✅ step-vs-step-fork	completed	12	0ms	ok	0
✅ step-vs-step-fork-fenced	completed	12	0ms	ok	0
✅ fence-catches-benign-direction	completed	12	5ms	ok	0
✅ in-flight-before-decision	completed	17	1.0m	ok	0
✅ in-flight-before-decision-counted	completed	17	1.0m	ok	0
✅ in-flight-after-decision	completed	19	2.0m	ok	0
✅ stale-read-step-count-fork-fenced	completed	20	1.0m	ok	0
✅ fork-hook-wins	completed	13	1.0m	ok	0
✅ fork-timeout-wins	completed	13	1.0m	ok	0
✅ unclaimed-payload-under-fork	completed	17	1.0m	ok	0
✅ claimed-payload-under-fork	completed	17	1.0m	ok	0
✅ writers-independent-step-bodies	completed	12	0ms	ok	0
✅ writers-scripted-tempo	completed	12	0ms	ok	0
✅ cancel-mid-step	cancelled	7	0ms	skipped	0

Full trace: world-sim.txt

[pranaygp]

Checked all four sections on the preview: each new link goes to its own version's Vercel World page (/worlds/vercel#… for v5, /v4/worlds/vercel#… for v4), and both target anchors exist on both pages.

[github-actions]

No backport to stable for a3f53cf (AI decision).

The commit's substance is cross-referencing a new "Connecting from outside a deployment" guide that only exists on main: docs/content/worlds/ is entirely absent from origin/stable, so the added links would be dead in the docs content bundled from that branch. The one genuinely corrective piece is the start() callout sentence about deploymentId: "latest" preferring the World's token over VERCEL_TOKEN, which is also wrong on stable (at docs/content/docs/api-reference/workflow-api/start.mdx, a different path than the v4/v5 files touched here) and could be split out and forced through if desired.

To override, re-run the Backport to stable workflow manually via workflow_dispatch and paste this commit SHA into the ref input:

a3f53cf22a2e97c91363faaffa274a5fbef7c174