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.
npx agentmods add skills/vercel/workflow/workflow-initnpx skills add vercel/workflow --skill workflow-initgit clone --depth 1 https://github.com/vercel/workflowWhat 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 | $0.00078 | $0.00869 |
| Opus 5 | $0.00039 | $0.00434 |
| Sonnet 5 | $0.00016 | $0.00174 |
| Haiku 4.5 | $0.00008 | $0.00087 |
Grade A, and why
workflow-init scanned grade A with 1 finding 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 yesterday.
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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- Trigger the example endpoint with the provided `curl`. How it starts
The opening of the file, as written. The whole thing — 75 lines — stays where its author put it; the contents beside it link to each section on GitHub.
workflow-init
Initial setup of Vercel Workflow SDK before workflow is installed. Fetch the official getting-started guide for the user's framework.
Decision flow
0) Sanity check
Read package.json. If workflow is already a dependency, tell the user to use /workflow instead (it reads versioned docs from node_modules/workflow/docs/). Only continue if workflow is missing.
1) Determine the framework
Non-interactive: If the user named a framework in their prompt, use it directly.
Auto-detect: Inspect package.json deps and config files. Use the first match:
- Next.js -
nextdep ornext.config.* - Nuxt -
nuxtdep ornuxt.config.* - SvelteKit -
@sveltejs/kitdep orsvelte.config.* - Astro -
astrodep orastro.config.* - NestJS -
@nestjs/coredep ornest-cli.json - Nitro -
nitrodep ornitro.config.* - Express -
expressdep - Fastify -
fastifydep - Hono -
honodep - Vite -
vitedep (and not matched above)
If no match or multiple matches, ask the user to pick.
2) Fetch and follow the getting-started guide
Fetch exactly one of these URLs and follow the guide step-by-step:
Each guide covers: install deps, configure framework, create first workflow, create route handler, run + verify.
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.
- yesterday First seen · 75 lines · 78 tokens per session scan A c2c9c94090d8
workflow-init is a skill published in the GitHub repository vercel/workflow (2,363 stars, last pushed 3d ago), licensed Apache-2.0. It adds 78 tokens to every session and 869 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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