vercel.app: what it tells AI crawlers
On 27 October 2026, vercel.app's robots.txt allowed all of GPTBot, OAI-SearchBot, ClaudeBot, Claude-SearchBot, Google-Extended, PerplexityBot and CCBot.
Last verified 2026-10-28 03:59 UTC (daily run of 2026-10-27). Proof for that day.
- Panel
- top 1k (Tranco)
- robots.txt
- ok (HTTP 200) · https://vercel.com
unchanged since 2026-10-27 · sha2562b4d23550c5fc213…· view as recorded
Per AI bot, 2026-10-27
| User agent | Verdict | How |
|---|---|---|
| GPTBot | allows | no applicable rules |
| OAI-SearchBot | allows | no applicable rules |
| ChatGPT-User | allows | no applicable rules |
| ClaudeBot | allows | no applicable rules |
| Claude-SearchBot | allows | no applicable rules |
| Claude-User | allows | no applicable rules |
| PerplexityBot | allows | no applicable rules |
| Perplexity-User | allows | no applicable rules |
| Googlebot | allows | no applicable rules |
| Google-Extended | allows | no applicable rules |
| Applebot-Extended | allows | no applicable rules |
| CCBot | allows | no applicable rules |
| Bytespider | allows | no applicable rules |
| Meta-ExternalAgent | allows | no applicable rules |
| Amazonbot | allows | no applicable rules |
Other signals
| Publishes /llms.txt | no |
| Publishes /ai.txt | no |
| Publishes /.well-known/tdmrep.json | no |
| Reserves TDM rights (TDMRep file, header or meta) | not observed |
| Declares Content Signals (robots.txt or header) | not observed |
| Says ai-train=no in a Content Signal | not observed |
| Points to an RSL licence (robots.txt License line or Link header) | not observed |
| Answers with an x402 payment offer (lower bound: only the homepage is probed) | not observed |
| Answers HTTP 402 Payment Required (lower bound: only the homepage is probed) | not observed |
| Sends noai / noimageai directives | not observed |
| Refused our fetcher (403 / challenge) | no |
robots.txt versions
| From | Through | State | Version | |
|---|---|---|---|---|
| 2026-10-27 | 2026-10-28 | ok 200 | 2b4d23550c5f | diff with previous |
| 2026-10-26 | 2026-10-26 | ok 200 | df60ba15cae7 |
Timeline of changes
| Date | What changed |
|---|---|
| 2026-10-27 | robots.txt changed |
Reconstructed history (Common Crawl)
From Common Crawl's robots.txt captures: what CCBot was served, one crawl per quarter. A separate series from the daily observations above; a 403 here means Common Crawl was refused, not this ledger.
| Crawl | Host | State | GPTBot | OAI-SearchBot | ChatGPT-User | ClaudeBot | Claude-SearchBot | Claude-User | PerplexityBot |
|---|---|---|---|---|---|---|---|---|---|
| 2024-09-16 CC-MAIN-2024-38 | vercel.app | redirect-only | unknown | unknown | unknown | unknown | unknown | unknown | unknown |
| 2022-10-03 CC-MAIN-2022-40 | vercel.app | redirect-only | unknown | unknown | unknown | unknown | unknown | unknown | unknown |
Evidence
Every daily observation of vercel.app is a leaf in that day's Merkle tree. Proof of the robots.txt line for 2026-10-27: audit path (JSON), day root and OpenTimestamps proof (complete (bitcoin block 973493)).
API: https://infrarabbit.com/crawlers/api/v1/policy/vercel.app