What broke this week
Changelog of MCP endpoint checks, auth changes, and new GTM MCP servers. Week of Oct 13–15, 2026 (seed).
Airtable — initial verification
Getting-started docs fetched; unauth POST returned HTTP 401.
Apify — initial verification
Docs fetched; unauth POST returned HTTP 401.
Apify (local stdio) — initial verification
Documented local transport for clients without remote MCP.
Apollo — initial verification
Vendor docs fetched; unauth POST returned HTTP 403.
Attio — initial verification
Docs fetched; unauth POST returned HTTP 403.
BuiltWith — initial verification
BuiltWith publishes MCP API docs; treat as discovery API, not classic remote MCP.
Calendly — initial verification
Developer docs fetched; unauth POST returned HTTP 403.
Canva — initial verification
Canva MCP verify-app docs; waitlist clients use mcp.canva.com/mcp; Developer Portal clients use api.canva.com/connect/v1/mcp.
Canva Connect (Developer Portal) — initial verification
Alternate endpoint for Developer Portal–registered MCP clients.
Clay — initial verification
University docs list endpoint; unauth POST returned HTTP 401 OAuth challenge.
Crunchbase — initial verification
Crunchbase connecting-AI-tools docs fetched with endpoint URL.
ElevenLabs — initial verification
Hosted MCP docs fetched; regional residency URLs documented.
ElevenLabs EU residency — initial verification
Documented regional MCP URL for isolated EU environment.
HeyGen — initial verification
HeyGen MCP overview fetched with full tool catalog.
HubSpot — initial verification
Developer docs fetched; unauth POST returned HTTP 401.
Instantly — initial verification
Help center docs fetched; unauth POST returned HTTP 401.
LeadMagic — initial verification
Product MCP page fetched; unauth POST returned HTTP 403.
Lusha — initial verification
Docs fetched; unauth POST returned HTTP 403.
Notion — initial verification
Developer guide fetched; unauth POST returned HTTP 403.
Perplexity — initial verification
Official Perplexity MCP docs fetched.
Perplexity (local stdio) — initial verification
Local alternative to hosted api.perplexity.ai/mcp.
PhantomBuster — initial verification
Docs fetched; probe returned HTTP 200 JSON.
PredictLeads — initial verification
Vendor integrations page confirms hosted MCP; endpoint URL not printed on page — confirm before UI publish.
Prospeo — initial verification
API docs fetched; unauth POST returned HTTP 401.
Slack — initial verification
Official Slack docs list endpoint, scopes, and rate limits.
Surfe — initial verification
Developer docs fetched; unauth POST returned HTTP 401.
Typeform — initial verification
Typeform help center docs; EU endpoints also documented.
Typeform EU — initial verification
Regional endpoint from Typeform help docs (also api.typeform.eu/mcp).
Webflow — initial verification
Webflow MCP overview fetched; install guides use mcp.webflow.com/mcp.
Wiza — initial verification
Usage docs fetched; unauth POST returned HTTP 403.
Zapier — initial verification
Zapier MCP docs fetched; unauth POST returned HTTP 401.
ZeroBounce — initial verification
Official ZeroBounce MCP docs; local package only (no hosted remote URL).