# US college web census > Every active institution in the IPEDS 2024-25 institutional characteristics file with a website address (4,961 colleges, universities and other Title IV institutions, after merging campuses that share one domain) was fetched once over HTTPS on 2026-09-30, with robots.txt, security.txt (both locations), llms.txt and the A2A agent card. 4,763 answered with a website. Every active institution in the IPEDS 2024-25 institutional characteristics file with a website address (4,961 colleges, universities and other Title IV institutions, after merging campuses that share one domain) was fetched once over HTTPS on 2026-09-30, with robots.txt, security.txt (both locations), llms.txt and the A2A agent card. 4,763 answered with a website. ## Report - https://colleges.agentexchange.work/: The US college web census, September 2026: what 4,961 colleges and universities publish for students, security researchers and AI agents. Headline numbers, tables by control and level and by state, named lists, most-read pages, method. - https://colleges.agentexchange.work/findings.json: all aggregates (population 4,961, fetched 2026-09-30) ## One college - https://colleges.agentexchange.work/college: lookup (search form; ?domain= redirects to the page) - https://colleges.agentexchange.work/college/: 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, latest live re-check - https://colleges.agentexchange.work/college/.json: the same record as JSON (CORS open, CC BY 4.0); example https://colleges.agentexchange.work/college/4cd.edu.json - https://colleges.agentexchange.work/college/.xml: Atom feed for one domain (census record + every change found by re-checks) - https://colleges.agentexchange.work/college/.svg: badge (security.txt, accessibility statement, AI crawler stance) for embedding ## Live (changes every 6 hours) - https://colleges.agentexchange.work/changes: what changed since the census (HTML); https://colleges.agentexchange.work/changes.xml: Atom feed of the last 100 changes - https://colleges.agentexchange.work/live.json: re-check totals (last run, domains re-checked, changes) - https://colleges.agentexchange.work/trending.json: the 100 most fetched pages of the last 7 days by crawler family (1 in 4 sampled, scaled) ## Questions by state and control and level - https://colleges.agentexchange.work/by-state: colleges by state, ranked by accessibility-statement share, with security.txt share and GPTBot blocks - https://colleges.agentexchange.work/by-state/ca: Which colleges in California publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/ny: Which colleges in New York publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/tx: Which colleges in Texas publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/pa: Which colleges in Pennsylvania publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/fl: Which colleges in Florida publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/oh: Which colleges in Ohio publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/il: Which colleges in Illinois publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/nc: Which colleges in North Carolina publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/ma: Which colleges in Massachusetts publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/mi: Which colleges in Michigan publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/tn: Which colleges in Tennessee publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/mo: Which colleges in Missouri publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/nj: Which colleges in New Jersey publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/va: Which colleges in Virginia publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/ga: Which colleges in Georgia publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/pr: Which colleges in Puerto Rico publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/ok: Which colleges in Oklahoma publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/la: Which colleges in Louisiana publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/mn: Which colleges in Minnesota publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/wa: Which colleges in Washington publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/in: Which colleges in Indiana publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/az: Which colleges in Arizona publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/ar: Which colleges in Arkansas publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/ky: Which colleges in Kentucky publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/wi: Which colleges in Wisconsin publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/co: Which colleges in Colorado publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/ks: Which colleges in Kansas publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/al: Which colleges in Alabama publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/ia: Which colleges in Iowa publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/sc: Which colleges in South Carolina publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/md: Which colleges in Maryland publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/wv: Which colleges in West Virginia publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/or: Which colleges in Oregon publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/ut: Which colleges in Utah publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/ms: Which colleges in Mississippi publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/ct: Which colleges in Connecticut publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/ne: Which colleges in Nebraska publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/nm: Which colleges in New Mexico publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/me: Which colleges in Maine publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/nh: Which colleges in New Hampshire publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/mt: Which colleges in Montana publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/id: Which colleges in Idaho publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/sd: Which colleges in South Dakota publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/hi: Which colleges in Hawaii publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/nd: Which colleges in North Dakota publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/dc: Which colleges in District of Columbia publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-state/nv: Which colleges in Nevada publish an accessibility statement? (census 2026-09) - https://colleges.agentexchange.work/by-control-and-level: colleges by control and level, ranked by accessibility-statement share, with security.txt share and GPTBot blocks - https://colleges.agentexchange.work/by-control-and-level/private-nonprofit-4-year: private nonprofit 4-year: accessibility statements, security.txt and AI crawler rules of 1,528 colleges (census 2026-09) - https://colleges.agentexchange.work/by-control-and-level/private-for-profit-less-than-2-year: private for-profit less-than-2-year: accessibility statements, security.txt and AI crawler rules of 900 colleges (census 2026-09) - https://colleges.agentexchange.work/by-control-and-level/public-4-year: public 4-year: accessibility statements, security.txt and AI crawler rules of 871 colleges (census 2026-09) - https://colleges.agentexchange.work/by-control-and-level/public-2-year: public 2-year: accessibility statements, security.txt and AI crawler rules of 830 colleges (census 2026-09) - https://colleges.agentexchange.work/by-control-and-level/private-for-profit-2-year: private for-profit 2-year: accessibility statements, security.txt and AI crawler rules of 254 colleges (census 2026-09) - https://colleges.agentexchange.work/by-control-and-level/public-less-than-2-year: public less-than-2-year: accessibility statements, security.txt and AI crawler rules of 224 colleges (census 2026-09) - https://colleges.agentexchange.work/by-control-and-level/private-for-profit-4-year: private for-profit 4-year: accessibility statements, security.txt and AI crawler rules of 197 colleges (census 2026-09) - https://colleges.agentexchange.work/by-control-and-level/private-nonprofit-2-year: private nonprofit 2-year: accessibility statements, security.txt and AI crawler rules of 115 colleges (census 2026-09) - https://colleges.agentexchange.work/by-control-and-level/private-nonprofit-less-than-2-year: private nonprofit less-than-2-year: accessibility statements, security.txt and AI crawler rules of 42 colleges (census 2026-09) ## Vendor pages and webhooks - https://colleges.agentexchange.work/leads//state/: one state of one gap list, free sample of up to 10 rows, buy paths (0.25 state file, 1.00 full list, 5.00 every list); all listed in https://colleges.agentexchange.work/sitemap-leads.xml - POST https://colleges.agentexchange.work/watch: change webhook, 1.00 USDC for 30 days via x402; body { callback, list? , domain? }; terms at https://colleges.agentexchange.work/watch ## Gap lists (who is missing which control) - https://colleges.agentexchange.work/leads: 8 lists from the 2026-09-30 census; each has a free first 50 rows with counts by state (.top.json, CORS), an Atom feed of colleges entering or leaving it (.xml), and the full list as CSV or JSON for 1.00 USDC on Base via x402 (GET -> 402 -> pay -> resend with X-PAYMENT) - https://colleges.agentexchange.work/leads/no-accessibility-link: Colleges without an accessibility statement on the homepage (3,180 of 4,961); free https://colleges.agentexchange.work/leads/no-accessibility-link.top.json; feed https://colleges.agentexchange.work/leads/no-accessibility-link.xml; full https://colleges.agentexchange.work/leads/no-accessibility-link.csv or https://colleges.agentexchange.work/leads/no-accessibility-link.json; one state https://colleges.agentexchange.work/leads/no-accessibility-link/state/.csv (0.25 USDC) - https://colleges.agentexchange.work/leads/no-privacy-link: Colleges without a privacy policy link on the homepage (2,551 of 4,961); free https://colleges.agentexchange.work/leads/no-privacy-link.top.json; feed https://colleges.agentexchange.work/leads/no-privacy-link.xml; full https://colleges.agentexchange.work/leads/no-privacy-link.csv or https://colleges.agentexchange.work/leads/no-privacy-link.json; one state https://colleges.agentexchange.work/leads/no-privacy-link/state/.csv (0.25 USDC) - https://colleges.agentexchange.work/leads/no-security-txt: Colleges without a security.txt (4,617 of 4,961); free https://colleges.agentexchange.work/leads/no-security-txt.top.json; feed https://colleges.agentexchange.work/leads/no-security-txt.xml; full https://colleges.agentexchange.work/leads/no-security-txt.csv or https://colleges.agentexchange.work/leads/no-security-txt.json; one state https://colleges.agentexchange.work/leads/no-security-txt/state/.csv (0.25 USDC) - https://colleges.agentexchange.work/leads/expired-security-txt: Colleges with an expired security.txt (14 of 4,961); free https://colleges.agentexchange.work/leads/expired-security-txt.top.json; feed https://colleges.agentexchange.work/leads/expired-security-txt.xml; full https://colleges.agentexchange.work/leads/expired-security-txt.csv or https://colleges.agentexchange.work/leads/expired-security-txt.json; one state https://colleges.agentexchange.work/leads/expired-security-txt/state/.csv (0.25 USDC) - https://colleges.agentexchange.work/leads/no-hsts: Colleges without HSTS (2,622 of 4,961); free https://colleges.agentexchange.work/leads/no-hsts.top.json; feed https://colleges.agentexchange.work/leads/no-hsts.xml; full https://colleges.agentexchange.work/leads/no-hsts.csv or https://colleges.agentexchange.work/leads/no-hsts.json; one state https://colleges.agentexchange.work/leads/no-hsts/state/.csv (0.25 USDC) - https://colleges.agentexchange.work/leads/blocks-assistants: Colleges blocking both ChatGPT-User and Claude-User (48 of 4,961); free https://colleges.agentexchange.work/leads/blocks-assistants.top.json; feed https://colleges.agentexchange.work/leads/blocks-assistants.xml; full https://colleges.agentexchange.work/leads/blocks-assistants.csv or https://colleges.agentexchange.work/leads/blocks-assistants.json; one state https://colleges.agentexchange.work/leads/blocks-assistants/state/.csv (0.25 USDC) - https://colleges.agentexchange.work/leads/http-only: Colleges answering only over plain HTTP (87 of 4,961); free https://colleges.agentexchange.work/leads/http-only.top.json; feed https://colleges.agentexchange.work/leads/http-only.xml; full https://colleges.agentexchange.work/leads/http-only.csv or https://colleges.agentexchange.work/leads/http-only.json; one state https://colleges.agentexchange.work/leads/http-only/state/.csv (0.25 USDC) - https://colleges.agentexchange.work/leads/redirects-off-domain: College homepages that redirect to another domain (165 of 4,961); free https://colleges.agentexchange.work/leads/redirects-off-domain.top.json; feed https://colleges.agentexchange.work/leads/redirects-off-domain.xml; full https://colleges.agentexchange.work/leads/redirects-off-domain.csv or https://colleges.agentexchange.work/leads/redirects-off-domain.json; one state https://colleges.agentexchange.work/leads/redirects-off-domain/state/.csv (0.25 USDC) ## Datasets - https://colleges.agentexchange.work/colleges-web-census-2026-09.csv: One row per domain (4,961 rows), readable columns (CSV, 1.3 MB, CC BY 4.0) - https://colleges.agentexchange.work/colleges-web-census-2026-09.ndjson: One JSON record per line, same fields as the per-domain API (NDJSON, 4.3 MB, CC BY 4.0) - https://colleges.agentexchange.work/findings.json: Aggregates: overall, by control and level, by state, named lists (JSON, 313 KB, CC BY 4.0) ## Machine access - https://colleges.agentexchange.work/.well-known/agent-card.json: A2A agent card describing the JSON lookup and feeds - https://colleges.agentexchange.work/openapi.json: OpenAPI 3.1 of every route; the paid operations carry x-payment-info with the exact x402 terms (same prices as the 402 challenges) - https://colleges.agentexchange.work/mcp: MCP server (Streamable HTTP, JSON-RPC 2.0, no auth): tools domain_record, gap_list, live_recheck_terms, changes - https://colleges.agentexchange.work/sitemap.xml (demand-ordered: the most fetched domain pages first) ## Get listed - POST https://store.agentexchange.work/directory/list: list a site or agent in the Agent Exchange directory ($1 USDC on Base, paid with x402); free read at GET https://store.agentexchange.work/directory - https://colleges.agentexchange.work/listings: paid listings ($1.00 USDC on Base per 30 days via x402: POST /listings { url, name, description? } -> 402 -> pay -> resend with X-PAYMENT); current entries with name, URL, description, listed and expiry dates, plus paid entries mirrored from the Agent Exchange store directory - https://colleges.agentexchange.work/listings.json: the same as JSON (CORS open, cached 60 s); payable routes are described at https://colleges.agentexchange.work/.well-known/x402 - Measured attention, 2026-09-30T21:39Z: 1,318 GPTBot and 890 ClaudeBot fetches in 24 h (verified crawler fetches on this host in the 24 h before as_of (Cloudflare verifiedBotCategory), own traffic excluded; Cloudflare GraphQL httpRequestsAdaptiveGroups) ## Related - https://gov.agentexchange.work/: US government web census (.gov) - https://world.agentexchange.work/: World government web census - https://top100k.agentexchange.work/: Top 100,000 websites census - https://banks.agentexchange.work/: US bank web census - https://credit-unions.agentexchange.work/: US credit union web census - https://schools.agentexchange.work/: US school district web census - https://universities.agentexchange.work/: World university web census - https://network.agentexchange.work/: Every Agent Exchange property (network map) - https://grade.agentexchange.work/: Agent-readiness grade and fix guides - https://takeitdown.agentexchange.work/: Compliance Desk: hosted request processes - https://drift.agentexchange.work/: MCP registry integrity report - https://index.agentexchange.work/: Agent Economy Index (daily x402 and MCP census) - https://store.agentexchange.work/directory: Agent Exchange directory (x402 store) - https://agentexchange.work: Agent Exchange ## Licence - https://colleges.agentexchange.work/rsl.xml: machine-readable licence (RSL 1.0). Search, AI answers and AI indexing are free with attribution; AI training is $0.01 per crawl or per asset (Cloudflare Pay Per Crawl or this host's x402 routes). - https://colleges.agentexchange.work/licence: the same terms in plain words.