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feat(stats.js): optional WebMCP plugin + webmcp_tool events - #446

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ralyodio merged 1 commit into
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feat/stats-webmcp
Nov 11, 2026
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ralyodio merged 1 commit into
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feat/stats-webmcp

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Adds @profullstack/webmcp (https://github.com/profullstack/webmcp) as an opt-in stats.js plugin.

  • data-webmcp on the stats.js tag loads the embed from jsDelivr @0, only in browsers with document.modelContext/navigator.modelContext (others: one property check), and not if the page already loads the embed. Configured with data-webmcp-mcp, -search, -search-api, -pages, -mcp-exclude, -mcp-prefix, -name, -description, -forms, -llms-txt.
  • Every agent tool call (webmcp:call from webmcp 0.2.0+, from the plugin or the site's own copy) becomes a webmcp_tool event, target = tool name or name:error. Inputs/results are never sent.
  • Docs: /docs/statistics#webmcp. Contract test added.

Verified: rendered stats.js (bun) in Chrome 155 with WebMCPTesting: opted in -> site_info/open_page/search_site registered, calls arrived at /api/track as webmcp_tool:search_site / webmcp_tool:site_info, query text absent from beacons; not opted in -> nothing loaded. Contract assertions checked against the rendered script (no local node_modules).

🤖 Generated with Claude Code

data-webmcp on the stats.js tag loads @profullstack/webmcp's embed (only in
browsers with document.modelContext, skipped if the page has its own copy),
configured by data-webmcp-* attributes. Every agent tool call (webmcp:call,
from any copy of the embed) is recorded as a webmcp_tool event, name only.
Docs section + contract test.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
@ralyodio
ralyodio merged commit 5ee0da1 into master Nov 11, 2026
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ThreatCrush Security Scan

50 finding(s)

HIGH/CRITICAL: 2 | MEDIUM: 30 | LOW: 18

Severity Rule Location
HIGH tls-verification-disabled lib/onion.ts:50
HIGH secret-generic-credential lib/sp/platforms/facebook.ts:32
MEDIUM js-unescaped-html-sink app/(app)/dashboard/admin/email-broadcast/EmailBroadcastForm.tsx:125
MEDIUM js-unescaped-html-sink app/(app)/dashboard/projects/[id]/autoblog/articles/[articleId]/page.tsx:214
MEDIUM js-unescaped-html-sink app/(marketing)/blog/[slug]/page.tsx:74
MEDIUM js-unescaped-html-sink app/(marketing)/blog/[slug]/page.tsx:102
MEDIUM js-unescaped-html-sink app/(marketing)/recent/page.tsx:177
MEDIUM js-unescaped-html-sink app/(marketing)/recent/page.tsx:181
MEDIUM js-unescaped-html-sink app/c/[project]/[slug]/page.tsx:76
MEDIUM js-unescaped-html-sink app/c/[project]/page.tsx:58
MEDIUM js-unescaped-html-sink app/careers.js/route.ts:228
MEDIUM js-unescaped-html-sink app/careers.js/route.ts:285
MEDIUM js-unescaped-html-sink app/layout.tsx:139
MEDIUM js-open-redirect app/login/form.tsx:40
MEDIUM js-unescaped-html-sink app/r/[token]/page.tsx:164
MEDIUM js-open-redirect app/signup/form.tsx:65
MEDIUM js-unescaped-html-sink app/surveys/[slug]/invite/page.tsx:68
MEDIUM js-unescaped-html-sink components/json-ld.tsx:8
MEDIUM js-unescaped-html-sink components/pit-footer.tsx:17
MEDIUM js-unescaped-html-sink components/report/markdown-view.tsx:16
MEDIUM js-unescaped-html-sink lib/careers/page-templates.ts:198
MEDIUM js-dynamic-code-execution lib/crawl-limits.ts:67
MEDIUM redos-nested-quantifier lib/emailMarkdown.ts:41
MEDIUM redos-nested-quantifier lib/emailMarkdown.ts:324
MEDIUM redos-nested-quantifier lib/lx/articleGen.ts:100
MEDIUM redos-nested-quantifier lib/tracker/agent-gate.ts:61
MEDIUM sh-predictable-temp-path ops/selfhost/server/setup-supabase.sh:218
MEDIUM sql-template-interpolation scripts/detect-slot-themes.ts:31
MEDIUM sql-template-interpolation scripts/purge-constructed-keywords.ts:163
MEDIUM sql-template-interpolation scripts/purge-offniche-keywords.ts:124
MEDIUM js-dynamic-code-execution scripts/test-crawl-limits.mjs:14
MEDIUM js-dynamic-code-execution scripts/test-crawl-limits.mjs:24
LOW secret-generic-credential app/(marketing)/docs/autoblog-webhook/page.tsx:156
LOW secret-generic-credential lib/sealed/migrate.ts:38
LOW secret-generic-credential lib/sp/platforms/linkedin.ts:25
LOW secret-generic-api-key tests/ads-generator-agent.test.ts:160
LOW secret-generic-api-key tests/ads-generator-agent.test.ts:187
LOW js-dynamic-code-execution tests/careers-page-templates.test.ts:21
LOW js-dynamic-code-execution tests/careers-widget-script.test.ts:19
LOW js-dynamic-code-execution tests/careers-widget-script.test.ts:69
LOW js-dynamic-code-execution tests/contract/ad-visitor-id.test.ts:51
LOW js-dynamic-code-execution tests/contract/ad-visitor-id.test.ts:52
LOW js-dynamic-code-execution tests/contract/ads-click-cooldown-redis.test.ts:20
LOW js-dynamic-code-execution tests/contract/ads-click-cooldown-redis.test.ts:24
LOW js-dynamic-code-execution tests/contract/ads-click-cooldown-redis.test.ts:25
LOW js-dynamic-code-execution tests/contract/ads-click-cooldown-redis.test.ts:26
LOW js-dynamic-code-execution tests/contract/ads-click-cooldown-redis.test.ts:31
LOW js-dynamic-code-execution tests/contract/ads-click-cooldown-redis.test.ts:35
LOW secret-generic-credential tests/contract/posthog-integration.test.ts:13
LOW secret-generic-credential tests/lead-campaign.test.ts:16

Snippets are redacted; ThreatCrush never prints matched credential material.

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