Rank 1,105 in the Majestic Million · checked October 19, 2026
Does a.co block AI crawlers?
No. a.co had no robots.txt when we checked on October 19, 2026 (HTTP 404), so all 17 AI crawlers we check are allowed everywhere by default.
It has no llms.txt (HTTP 404). Its homepage is 177,640 tokens of raw HTML, 1,135 as Markdown (0.6%) and 175 pruned for the question “What is a.co?”.
Each crawler, by its robots.txt rules
https://a.co/robots.txt answered HTTP 404: no robots.txt, so no rules apply to any crawler.
| Crawler | Operator | Verdict | Rules that apply | Disallow rules | Allow rules |
|---|---|---|---|---|---|
| GPTBot | OpenAI | Allowed | No group applies | 0 | 0 |
| ChatGPT-User | OpenAI | Allowed | No group applies | 0 | 0 |
| OAI-SearchBot | OpenAI | Allowed | No group applies | 0 | 0 |
| ClaudeBot | Anthropic | Allowed | No group applies | 0 | 0 |
| Claude-User | Anthropic | Allowed | No group applies | 0 | 0 |
| Claude-SearchBot | Anthropic | Allowed | No group applies | 0 | 0 |
| anthropic-ai | Anthropic | Allowed | No group applies | 0 | 0 |
| PerplexityBot | Perplexity | Allowed | No group applies | 0 | 0 |
| Perplexity-User | Perplexity | Allowed | No group applies | 0 | 0 |
| Google-Extended | Allowed | No group applies | 0 | 0 | |
| Applebot-Extended | Apple | Allowed | No group applies | 0 | 0 |
| CCBot | Common Crawl | Allowed | No group applies | 0 | 0 |
| Bytespider | ByteDance | Allowed | No group applies | 0 | 0 |
| Amazonbot | Amazon | Allowed | No group applies | 0 | 0 |
| meta-externalagent | Meta | Allowed | No group applies | 0 | 0 |
| cohere-ai | Cohere | Allowed | No group applies | 0 | 0 |
| Diffbot | Diffbot | Allowed | No group applies | 0 | 0 |
| ContextFetchBot (us) | ContextFetch | Allowed | No group applies | 0 | 0 |
Its homepage in tokens
https://www.amazon.com/, fetched once and converted locally with the ContextFetch engine. Tokens are characters divided by four, rounded up, the count the API reports in its X-Raw-Tokens and X-Output-Tokens headers.
| Group | Raw HTML | Markdown | Pruned |
|---|---|---|---|
| Tokens | 177,640 | 1,135 | 175 |
Read a.co through ContextFetch
GET /r/ returns a page as Markdown, with X-Raw-Tokens and X-Output-Tokens headers. Add ?q= and a question to get only the passages that answer it. No key needed for 25 requests a day; a free key has 2,500 credits.
curl -si "https://api.contextfetch.dev/r/https://a.co/"curl -X POST https://api.contextfetch.dev/v1/keys/freeHow ContextFetchBot behaves · All sites and the method · Raw data
Give your agent the web
Your free key comes with 2,500 credits, no signup. One credit reads one page.