johnlindquist

Vercel Workflow Blog Post Drafts

Three variations, each covering a different angle. All draw from the same product (Workflow DevKit) and the same proof points, but target different reader motivations.

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Variation 1: Durable AI streaming that works locally

Format: Deep-dive (1200-1500 words) Primary keyword: durable AI streaming

johnlindquist

Claude Code → Cursor Hook Schema Mapping

Key differences between Claude Code and Cursor hook formats:

Concept	Claude Code	Cursor
Event name	hook_event_name	hook_event_name (same)
Session ID	session_id	conversation_id
Working dir	cwd + CLAUDE_PROJECT_ROOT env	workspace_roots[] + CURSOR_PROJECT_DIR env
Tool name	tool_name	tool_name (same for preToolUse/postToolUse)

johnlindquist

Vercel Sandbox: vcpus: 1 rejected by API (docs show it as valid)

Summary

The Vercel Sandbox API rejects resources: { vcpus: 1 } with a 400 error, but multiple documentation pages show or imply 1 vCPU as a valid configuration. The actual minimum is 2 vCPUs (even numbers only).

This matters for I/O-bound workloads. We measured CPU utilization inside OpenClaw sandboxes over a 2-hour live test: <2% CPU even at 162 msgs/hr sustained. A 1 vCPU / 2 GB tier would halve memory costs, which are 97-99% of total sandbox cost for this workload.

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johnlindquist

Vercel OIDC for AI Gateway: Zero-Config Authentication

Problem

OpenClaw sandboxes on Vercel needed a manually-configured AI_GATEWAY_API_KEY environment variable to authenticate with Vercel's AI Gateway for LLM inference. This was a deployment friction point — every new deployment or team member needed the key configured.

Solution

Replaced the static API key with Vercel's OIDC (OpenID Connect) token federation. The dashboard's Vercel Functions automatically receive an OIDC JWT that proves they're running on Vercel infrastructure. AI Gateway accepts this JWT as a bearer token — no static key needed.

johnlindquist

Plugin Feature Comparison Grid

Generated: 2026-03-02 Source: GPT-5.2 Pro (via Oracle) + web research (March 2026) Tools compared: Claude Code, Cursor, Codex CLI, OpenCode, Gemini CLI, Windsurf, VS Code / Copilot, Aider

Legend: ✅ full support | 🟡 partial/limited | ❌ no support

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johnlindquist

Open Plugin Project Review

Reviewed: 2026-03-02 Reviewer: GPT-5.2 Pro (via Oracle) + Claude Opus 4.6 Scope: Full project review against Claude Code's plugin system for cross-harness viability

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1) Gap Analysis vs Claude Code

johnlindquist

v0 Platform API: File uploads don't get full-stack sandbox previews

The Problem

When publishing Next.js apps via the v0 Platform API using chats.init({ type: "files" }), the preview (demo-*.vusercontent.net) does not execute API routes, Server Actions, or any server-side code. Every request — including POST /api/my-route — returns the page HTML instead.

This makes it impossible to build interactive demos that use workflow, database connections, or any backend logic when publishing via the Platform API.

The same app connected via chats.init({ type: "repo" }) gets a real Vercel Sandbox where API routes work, workflows execute, and server-side code runs as expected.

johnlindquist

Workflow DevKit Interactive Demos

Interactive demos for Vercel Workflow DevKit — each showcasing a different durable workflow pattern built with Next.js 16, React 19, and the workflow package.

#	Demo	Pattern	v0 Link
1	Approval Gate	Human-in-the-loop with timeout	Open in v0
2	Onboarding Drip	7-day email drip in 6 lines	Open in v0
3	Saga	Step 3 fails — compensating rollbacks	Open in v0
4	Cancellable Export	Cancel a batch mid-flight	Open in v0

johnlindquist

Current State

Turborepo has already landed the big algorithmic win — topological-wave parallel task hashing (commit b3c0f46da8) — but several implementation details are now the bottleneck:

• Parallelism is re-serialized by shared locks + deep clones: TaskHashTrackerState uses one RwLock guarding 6 independent HashMaps (crates/turborepo-task-hash/src/lib.rs:226-242), so any insert_hash() write blocks all concurrent reads. The visitor's wave-hashing funnels results through Arc<Mutex<HashMap>> with per-wave serialization (crates/turborepo-lib/src/task_graph/visitor/mod.rs:233-303).

• Allocation hot-loops dominate hash & dispatch: DetailedMap (3 nested HashMaps) deep-cloned on every env_vars() read (line 622). EnvironmentVariableMap cloned per task at line 388. Repeated regex compilations for env patterns (4 per task in hashable_task_env) and glob patterns (O(packages) recompilations). SCM hashing allocates 10,000+ hex Strings inside parallel loops.

• **I/O paths lea

johnlindquist

OpenClaw Cron in Vercel Sandbox: The Pairing Wall

The User Story

You deploy OpenClaw (an AI gateway) inside a Vercel Sandbox and connect it to Telegram. Users chat with the bot. Everything works great — until someone says:

"Text me a silly joke every 5 minutes"

The bot tries to create a scheduled task (a cron job). It fails: