# US bank web census

> Every active FDIC-insured bank and savings institution with a website address in FDIC BankFind (4,123 institutions) was fetched once over HTTPS on 2026-09-30, with robots.txt, security.txt (both locations), llms.txt and the A2A agent card. 4,023 answered with a website. Lists and lookup pages are ordered by total assets from the FDIC record.

Every active FDIC-insured bank and savings institution with a website address in FDIC BankFind (4,123 institutions) was fetched once over HTTPS on 2026-09-30, with robots.txt, security.txt (both locations), llms.txt and the A2A agent card. 4,023 answered with a website. Lists and lookup pages are ordered by total assets from the FDIC record.

## Report
- https://banks.agentexchange.work/: The US bank web census, September 2026: what 4,123 FDIC-insured banks publish for customers, security researchers and AI agents. Headline numbers, tables by charter class and by state, named lists, method.
- https://banks.agentexchange.work/findings.json: all aggregates (population 4,123, fetched 2026-09-30)

## One bank
- https://banks.agentexchange.work/bank: lookup (search form; ?domain=<host> redirects to the page)
- https://banks.agentexchange.work/bank/<domain>: HTTPS, HSTS, security.txt, privacy and accessibility links, robots.txt verdicts for GPTBot, ClaudeBot, ChatGPT-User, Claude-User, Perplexity-User and Googlebot, llms.txt, A2A agent card, what to fix
- https://banks.agentexchange.work/bank/<domain>.json: the same record as JSON (CORS open, CC BY 4.0); example https://banks.agentexchange.work/bank/jpmorganchase.com.json

## Datasets
- https://banks.agentexchange.work/banks-web-census-2026-09.csv: One row per domain (4,123 rows), readable columns (CSV, 927 KB, CC BY 4.0)
- https://banks.agentexchange.work/banks-web-census-2026-09.ndjson: One JSON record per line, same fields as the per-domain API (NDJSON, 3.3 MB, CC BY 4.0)
- https://banks.agentexchange.work/findings.json: Aggregates: overall, by charter class, by state, named lists (JSON, 196 KB, CC BY 4.0)

## Machine access
- https://banks.agentexchange.work/.well-known/agent-card.json: A2A agent card describing the JSON lookup
- https://banks.agentexchange.work/sitemap.xml

## Related
- https://gov.agentexchange.work/: Government web census (.gov)
- https://colleges.agentexchange.work/: US college web census
- https://schools.agentexchange.work/: US school district web census
- https://libraries.agentexchange.work/: US public library web census
- https://top100k.agentexchange.work/: Top 100,000 websites census
- https://grade.agentexchange.work/reports/ai-crawler-census-2026-09: AI crawler census (top 10,000 sites)
- https://agentexchange.work: Agent Exchange