Workflow is a TypeScript SDK for building applications and AI agents whose work can continue reliably across steps and be observed while running. It is for developers creating durable workflows and orchestration logic for applications or agents. The catalogue add-ons provide workflows, rules, instructions, settings, commands, and agents for using the SDK.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/vercel/workflowWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/rules/vercel/workflow/swc-plugin)<a href="https://agentmods.dev/rules/vercel/workflow/swc-plugin"><img src="https://agentmods.dev/badge/rules/vercel/workflow/swc-plugin/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/rules/vercel/workflow/swc-plugin"><img src="https://agentmods.dev/badge/rules/vercel/workflow/swc-plugin.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00000 | $0.00087 |
| Opus 5.5 | $0.00000 | $0.00035 |
| Sonnet 5.5 | $0.00000 | $0.00017 |
| Haiku 4.5 | $0.00000 | $0.00009 |
Grade A, and why
swc-plugin scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
SWC plugin development notes
The specification for how to plugin is meant to work can be found in spec.md.
To test the plugin, run pnpm test inside swc-plugin-workflow. If changes have been made, use UPDATE=1 pnpm test to have the fixtures be updated to pass the tests.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 10 lines · 0 tokens per session scan A e2bf93ea5d66
swc-plugin is a cursor rule published in the GitHub repository vercel/workflow (2,455 stars, last pushed today), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 87 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other cursor rules, from other repositories
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otel-metrics
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executing-commands
how to run commands in the monorepo.
webapp
Making updates to the main trigger.dev remix webapp.
migrations
how to create and apply database migrations.
repo
understanding the structure of the monorepo.