Why ClaudeBot traffic triggers usage limits on Vercel Hobby plan

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1

Problem

  • ClaudeBot request surge triggered a Vercel block/limit on my Hobby account.
  • Even with Vercel Firewall blocking the traffic, it seems to still count toward Hobby plan usage.
  • Because of the block/limit, my microfrontend deploy is restricted (so I can’t add files like robots.ts / sitemap.ts).

Questions

  • Need to know the block trigger + how long until deploy is unlocked/reset.
  • Whether Firewall-blocked requests still count toward Hobby usage.

截圖 2026-04-02 凌晨12.06.30
截圖 2026-04-02 凌晨12.06.301377×751 51 KB

Thanks in advance for any guidance.

6

I’ve prevented auto blocking on your account for the next 30 days. I hope that helps!

ClaudeBot traffic counts toward your Hobby plan’s Edge Request limit (1M/month) even when blocked by Vercel Firewall. Only traffic blocked by Attack Challenge Mode, persistent IP blocks, or DDoS mitigation doesn’t count toward usage.

I recommend using the AI Bots Managed Ruleset to block ClaudeBot and similar crawlers.

8

Thank you for the update and for preventing auto-blocking on my account.

I would like to clarify my current situation. Before I reached out for help, my account had already been blocked from creating new deployments due to the massive surge in requests from ClaudeBot. I have since implemented measures to resolve the ClaudeBot traffic issue, but the deployment restriction remains in effect. Could you please help me lift the deployment block?

Additionally, I am quite confused by the conflicting information provided by Vercel in my Pull Requests. For example:

- In this PR Remove bot-crawler-dynamic-route-hardening.md file to streamline documentation and eliminate outdated content. by EricTsai83 · Pull Request #60 · EricTsai83/optstuff · GitHub , the error message states that deployments are blocked until April 13, 2026.

- However, in another PR Integrate Shiki for code highlighting and refactor component management by EricTsai83 · Pull Request #59 · EricTsai83/optstuff · GitHub within the same monorepo, it says they are blocked until April 3, 2026. Both messages mention exceeding the free Microfrontends request limit, but the dates are inconsistent. Could you clarify which one is correct？

I look forward to your guidance on how I can resume my deployments. Best regards,

9

Thank you for bringing this to our attention. To ensure this is investigated with the necessary priority and privacy, please report all security-related concerns, potential exploits, or abuse directly to the Vercel Security Team.

Please submit your report here: Report Abuse On Vercel

Reporting via this official channel is the fastest way to reach our security engineers and ensures that sensitive information is handled in a secure environment rather than a public forum.