crawlindex

Tranco rank 378

nasa.gov

nasa.gov scores 75 out of 100 for agent readiness. It allows every answer-surface AI crawler.

Score 75 out of 100, grade B
Last measured
2026-08-09 18:13 UTC
First seen
2026-08-09
Rubric / probe
v1.0.0 / v2.0.0

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How this score is made up

Agent access45 / 45

  • Answer-surface crawlers allowed. All 11 answer-surface crawlers are allowed.
  • Secondary crawlers allowed. All 12 secondary crawlers are allowed.
  • Serves crawlers the same content. A crawler and a browser receive comparable responses.

Machine-readable surface3 / 25

  • robots.txt published. robots.txt is present and parseable.
  • Sitemap declared in robots.txt. robots.txt does not declare a sitemap.
  • llms.txt published. No /llms.txt.
  • agents.md published. No /agents.md.

Content structure27 / 30

  • Organization schema. Organization JSON-LD lets an agent resolve who publishes this site.
  • WebSite schema. WebSite JSON-LD present.
  • Additional structured data. Also declares: ImageObject, WebPage, Person, Article.
  • Readable without JavaScript. 9,880 characters of text in the server response. Most crawlers do not execute JavaScript.
  • Single top-level heading. 0 h1 elements found.
  • Semantic landmarks. Uses main, nav, header, footer, article.

Crawler policy

Read from nasa.gov/robots.txt. A crawler is listed as blocked when the rules deny it the site root. This operator names no AI crawler explicitly.

AI crawler access policy for nasa.gov
CrawlerOperatorTierNamedStatus
GPTBotOpenAI1noAllowed
OAI-SearchBotOpenAI1noAllowed
ChatGPT-UserOpenAI1noAllowed
ClaudeBotAnthropic1noAllowed
Claude-UserAnthropic1noAllowed
Claude-SearchBotAnthropic1noAllowed
PerplexityBotPerplexity1noAllowed
Perplexity-UserPerplexity1noAllowed
Google-ExtendedGoogle1noAllowed
Applebot-ExtendedApple1noAllowed
meta-externalagentMeta1noAllowed
CCBotCommon Crawl2noAllowed
AmazonbotAmazon2noAllowed
BytespiderByteDance2noAllowed
cohere-aiCohere2noAllowed
MistralAI-UserMistral2noAllowed
YouBotYou.com2noAllowed
DuckAssistBotDuckDuckGo2noAllowed
kagi-fetcherKagi2noAllowed
DiffbotDiffbot2noAllowed
Google-NotebookLMGoogle2noAllowed
TavilyBotTavily2noAllowed
FirecrawlAgentFirecrawl2noAllowed

Show this score

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CrawlIndex badge for nasa.gov, score 75
<a href="https://crawlindex.org/site/nasa.gov"><img src="https://crawlindex.org/badge/nasa.gov.svg" alt="CrawlIndex agent readiness score for nasa.gov" width="196" height="28"></a>

This measurement as JSON

Using these figures

Free to reuse in research, journalism or a product under CC BY 4.0, with credit to Fidget Labs BV. Quote the measurement date so the claim stays checkable as the index moves.

CrawlIndex by Fidget Labs BV. "nasa.gov agent readiness." https://crawlindex.org (measured 2026-08-09). Licensed CC BY 4.0.