{"about":"A weekly note on who visits overwing.ai, from the nightly sightings rollup. Cite as: Overwing Atlas, This week in agent traffic, <week>.","weeks":["2026-W41","2026-W40"],"note":{"week":"2026-W40","period":{"from":"2026-09-28","to":"2026-10-04"},"published":"2026-10-05","requests":{"total":25666,"previous":0,"change_pct":null,"by_kind":[{"kind":"unknown","label":"generic libraries","requests":13667,"share":53.2,"user_agents":346},{"kind":"tool","label":"self-named software","requests":3925,"share":15.3,"user_agents":35},{"kind":"agent","label":"registered agents","requests":3628,"share":14.1,"user_agents":58},{"kind":"browser","label":"browsers","requests":2422,"share":9.4,"user_agents":1},{"kind":"sdk","label":"SDKs and clients","requests":1597,"share":6.2,"user_agents":15},{"kind":"empty","label":"no User-Agent at all","requests":427,"share":1.7,"user_agents":1}]},"registered_agents":{"seen":45,"previous":0,"new_this_week":["AgenstryBot","Agent402","AhrefsBot","Amazonbot","Applebot","BrickBlueBot","Bytespider","ChatGPT Agent","ChatGPT-User","Claude-Code","Claude-User","ClaudeBot","Crosspeel","DuckDuckBot","ExaSearchBot","GAIP-Observatory","GPTBot","GolemreachTrustBot","GoogleOther","Googlebot","KeenableBot","Meta-ExternalAgent","Nitrograph health check","OAI-SearchBot","PerplexityBot","Reflectionbot","Scrapy","SemrushBot","SettledProbe","Shap-User","ShapBot","Slackbot-LinkExpanding","SuperstablesCrawler","Taifoon harvester","ToolAssay","ZeroBot","agentprobe","bingbot","facebookexternalhit","forum-labs-trust-prober","hultra-link","meta-webindexer","vet402 observatory","x402-doctor trust scan","x402watch"],"top":[{"agent":"Agent402","operator":"Agent402 (https://agent402.tools)","verification":"User-agent string only (spoofable)","requests":1504,"days":7,"checked":417,"verified":0,"contradicted":0},{"agent":"Meta-ExternalAgent","operator":"Meta","verification":"User-agent string only (spoofable)","requests":438,"days":4,"checked":186,"verified":0,"contradicted":0},{"agent":"BrickBlueBot","operator":"brick.blue (https://brick.blue)","verification":"User-agent string only (spoofable)","requests":299,"days":6,"checked":77,"verified":0,"contradicted":0},{"agent":"forum-labs-trust-prober","operator":"Forum Labs (https://forum-labs.com)","verification":"User-agent string only (spoofable)","requests":196,"days":7,"checked":49,"verified":0,"contradicted":0},{"agent":"ClaudeBot","operator":"Anthropic (https://www.anthropic.com)","verification":"User-agent string only (spoofable)","requests":182,"days":7,"checked":52,"verified":0,"contradicted":0},{"agent":"AgenstryBot","operator":"Agenstry (https://agenstry.com)","verification":"User-agent string only (spoofable)","requests":180,"days":6,"checked":60,"verified":0,"contradicted":0},{"agent":"Amazonbot","operator":"Amazon","verification":"User-agent string only (spoofable)","requests":108,"days":6,"checked":58,"verified":58,"contradicted":0},{"agent":"GolemreachTrustBot","operator":"Golemreach (https://golemreach.com)","verification":"User-agent string only (spoofable)","requests":72,"days":5,"checked":32,"verified":0,"contradicted":0}]},"clients":{"user_agents":456,"new_user_agents":456,"new_share":100},"identity":{"checked":1105,"verified":86,"contradicted":1,"verified_rate":7.8},"asked_for":{"robots":409,"llms":366,"openapi":877,"mcp":5641,"a2a":611,"x402":6497,"markdown":65},"payments":1,"registry_size":312,"findings":["25,666 requests in the week of 2026-09-28. Generic libraries sent the most, 53.2% of it.","45 registered agents visited, 45 for the first time: AgenstryBot, Agent402, AhrefsBot, Amazonbot, Applebot and 40 more. The busiest was Agent402 (Agent402 (https://agent402.tools)) with 1,504 requests, 41.5% of what registered agents sent.","Of 1,105 requests whose claimed identity could be checked against the operator's published evidence, 86 (7.8%) were confirmed and 1 contradicted the claim. The rest could not be checked either way.","456 distinct User-Agent strings arrived, 456 (100%) never seen before this week. Automated clients asked for the MCP endpoint 5,641 times and x402 payment terms 6,497 times, against 366 for llms.txt and 409 for robots.txt.","1 x402 payment settled in the week."]}}