--- title: "Act Layer Census, 4 November 2026 edition | Agent MCP Directory" description: "Act Layer Census, 4 November 2026 edition: three charts, the method, CSV and JSON downloads and a citation line. Valid files only, by cohort and category." canonical: https://agentmcpdirectory.com/census/2026-11-04 site: "Agent MCP Directory" last_updated: 2026-11-04 date: 2026-11-04 section: "Census" --- # Act Layer Census, 4 November 2026 edition | Agent MCP Directory > Act Layer Census, 4 November 2026 edition: three charts, the method, CSV and JSON downloads and a citation line. Valid files only, by cohort and category. Source: https://agentmcpdirectory.com/census/2026-11-04 Site: Agent MCP Directory Last reviewed: 2026-11-04 # Act Layer Census: 4 November 2026 edition First edition, 4 November 2026. In the top 10,000, 274 of 7,548 probed domains publish at least one of nine act-layer files; among Ora-scored domains the figure is 430 of 3,388. The directory splits 1,336 companies by what a connector found. ## Chart 1: which files sites publish Share of probed domains with a valid file, two cohorts. | File | Top 10,000 | Ora leaderboard | | --- | --- | --- | | /.well-known/oauth-authorization-server | 208 of 7,468 (2.79%) | 253 of 3,375 (7.5%) | | /.well-known/agent-skills/index.json | 53 of 7,435 (0.71%) | 144 of 3,364 (4.28%) | | /.well-known/ai-catalog.json | 38 of 7,438 (0.51%) | 85 of 3,365 (2.53%) | | /openapi.json | 21 of 7,472 (0.28%) | 78 of 3,369 (2.32%) | | /.well-known/mcp.json | 19 of 7,470 (0.25%) | 66 of 3,366 (1.96%) | | /.well-known/agent-card.json | 10 of 7,470 (0.13%) | 48 of 3,368 (1.43%) | ## Chart 2: by category Leaderboard cohort only; categories are Ora's. | Category | Domains probed | With at least one file | Share | | --- | --- | --- | --- | | Agent Tools | 130 | 32 | 24.62% | | CRM | 42 | 9 | 21.43% | | Productivity | 148 | 28 | 18.92% | | Consumer | 74 | 14 | 18.92% | | Developer Tools | 379 | 67 | 17.68% | | Data & Analytics | 148 | 26 | 17.57% | | E-commerce | 148 | 26 | 17.57% | | Infrastructure | 232 | 40 | 17.24% | | Communication & Support | 147 | 25 | 17.01% | | Education | 93 | 11 | 11.83% | | AI & ML | 205 | 24 | 11.71% | | Marketing | 219 | 24 | 10.96% | | Security | 94 | 10 | 10.64% | | Identity & Auth | 70 | 7 | 10% | | Healthcare | 246 | 22 | 8.94% | | Payments & Fintech | 398 | 30 | 7.54% | | Gaming & Media | 70 | 5 | 7.14% | | HR & Recruiting | 58 | 4 | 6.9% | | Logistics & Supply Chain | 85 | 5 | 5.88% | | Real Estate & Construction | 85 | 5 | 5.88% | | Legal & Compliance | 90 | 4 | 4.44% | | Hardware & Robotics | 103 | 4 | 3.88% | | Climate & Energy | 42 | 0 | 0% | ## Chart 3: what the connector found Verified means the endpoint listed tools with no credentials. | Status | Companies | Counted as an MCP server | | --- | --- | --- | | Verified | 263 | yes | | Sign-in required | 533 | no | | Credential wall | 19 | no | | No answer | 47 | no | | No tools listed | 2 | no | | None found | 472 | no | ## Auth types among reachable endpoints | Auth type | Endpoints | | --- | --- | | No authentication | 263 | | API key | 19 | | OAuth with client registration | 517 | | OAuth without client registration | 16 | | Auth not determined | 2 | ## Method - Source: the shared crawl of 4 November 2026, 13,071 domains, last request 2026-11-04 20:16 UTC. The crawl reads robots.txt first and skips what it disallows. - Two cohorts: the Tranco top 10,000 list (9,999 domains, 7,548 reachable and probed) and the domains on Ora's public leaderboard (3,456 domains, 3,388 probed). A domain can sit in both. - A domain is probed for a path when the crawl holds an HTTP status for it. Paths the crawl skipped for robots.txt or request budget are not probed and are not in the denominator. - A file counts as found only when the answer is JSON (YAML for openapi.yaml) whose top-level keys match the file type. A web page that answers 200 does not count: on /.well-known/mcp.json that was 11.53% of the probed top-10,000 domains. - The categories come from Ora's leaderboard, so only the leaderboard cohort has them. ## Downloads and citation - [act-layer-census-2026-11-04.csv](https://agentmcpdirectory.com/data/act-layer-census-2026-11-04.csv) one row per cohort and file - [act-layer-census-2026-11-04.json](https://agentmcpdirectory.com/data/act-layer-census-2026-11-04.json) cohorts, files and categories Agent MCP Directory, "Act Layer Census", 4 November 2026 edition, https://agentmcpdirectory.com/census/2026-11-04 Edition 4 November 2026 Method [How rows are verified](https://agentmcpdirectory.com/method/) Data [CSV and JSON](https://agentmcpdirectory.com/data/) Markdown [This page as markdown](https://agentmcpdirectory.com/census/2026-11-04/index.md) ## Sources - [Ora public leaderboard](https://ora.ai/leaderboard?utm_source=agentmcpdirectory.com&utm_medium=referral&utm_campaign=dataset), read 4 November 2026 - [Tranco list](https://tranco-list.eu/), read 4 November 2026 - [Official MCP Registry](https://registry.modelcontextprotocol.io/v0/servers), read 4 November 2026 Last reviewed 4 November 2026