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Authentication requiredReachable; initialization requires authentication.
Since Aug 6, 2026 — 5:40 AM (43 d ago)

An authentication challenge is availability, not an outage — the endpoint is reachable and answering. Passive observation records the challenge and any OAuth discovery metadata without ever authenticating. OAuth-authenticated contract monitoring is planned.

Recorded auth metadata
authMeta — as observed
{
  "httpStatus": 401,
  "wwwAuthenticate": "Bearer realm=\"OAuth\", resource_metadata=\"https://mcp.squareup.com/.well-known/oauth-protected-resource/sse\", error=\"invalid_token\", error_description=\"Missing or invalid access token\"",
  "discovery": {
    "resource": "https://mcp.squareup.com/mcp",
    "authorization_servers": [
      "https://mcp.squareup.com"
    ],
    "scopes_supported": [
      "BANK_ACCOUNTS_READ",
      "BANK_ACCOUNTS_WRITE",
      "CASH_DRAWER_READ",
      "CUSTOMERS_READ",
      "CUSTOMERS_WRITE",
      "DEVICE_CREDENTIAL_MANAGEMENT",
      "EMPLOYEES_READ",
      "EMPLOYEES_WRITE",
      "INVENTORY_READ",
      "INVENTORY_WRITE",
      "ITEMS_READ",
      "ITEMS_WRITE",
      "MERCHANT_PROFILE_READ",
      "ORDERS_READ",
      "ORDERS_WRITE",
      "PAYMENTS_READ",
      "PAYMENTS_WRITE",
      "PAYMENTS_WRITE_ADDITIONAL_RECIPIENTS",
      "PAYMENTS_WRITE_IN_PERSON",
      "SETTLEMENTS_READ",
      "TIMECARDS_READ",
      "TIMECARDS_WRITE",
      "TIMECARDS_SETTINGS_READ",
      "TIMECARDS_SETTINGS_WRITE",
      "APPOINTMENTS_READ",
      "APPOINTMENTS_WRITE",
      "APPOINTMENTS_BUSINESS_SETTINGS_READ",
      "INVOICES_READ",
      "INVOICES_WRITE",
      "SUBSCRIPTIONS_READ",
      "SUBSCRIPTIONS_WRITE",
      "DISPUTES_READ",
      "DISPUTES_WRITE",
      "GIFTCARDS_READ",
      "GIFTCARDS_WRITE",
      "ONLINE_STORE_SNIPPETS_WRITE",
      "ONLINE_STORE_SNIPPETS_READ",
      "ONLINE_STORE_SITE_READ",
      "PAYMENTS_WRITE_SHARED_ONFILE",
      "APPOINTMENTS_ALL_READ",
      "APPOINTMENTS_ALL_WRITE",
      "MERCHANT_PROFILE_WRITE",
      "VENDOR_READ",
      "VENDOR_WRITE",
      "PAYOUTS_READ",
      "REPORTING_READ",
      "DEVICES_READ",
      "LOYALTY_READ",
      "LOYALTY_WRITE"
    ]
  }
}
100%
Availability · 30 days · 672 checks
61 ms
Latency (last observation)
—
Contract
—
Schema stable
0
Incidents · 30 days
—
Observed since

Availability — last 30 days

No failures Some failures Mostly failing Auth required No observations

Last observed 28 min ago by MCP Tools Edge Scanner · scheduled every 60 min

Baseline captured — authentication required Informational Aug 6, 2026 — 5:40 AM
Endpoint is reachable; initialization requires authentication. Passive observation records availability, latency, and protocol behavior only.
Verifiedinitialize returned HTTP 401.
InterpretationAuthenticated contract monitoring can be added later (OAuth support planned).
Raw event details
{
  "httpStatus": 401,
  "wwwAuthenticate": "Bearer realm=\"OAuth\", resource_metadata=\"https://mcp.squareup.com/.well-known/oauth-protected-resource/sse\", error=\"invalid_token\", error_description=\"Missing or invalid access token\"",
  "discovery": {
    "resource": "https://mcp.squareup.com/mcp",
    "authorization_servers": [
      "https://mcp.squareup.com"
    ],
    "scopes_supported": [
      "BANK_ACCOUNTS_READ",
      "BANK_ACCOUNTS_WRITE",
      "CASH_DRAWER_READ",
      "CUSTOMERS_READ",
      "CUSTOMERS_WRITE",
      "DEVICE_CREDENTIAL_MANAGEMENT",
      "EMPLOYEES_READ",
      "EMPLOYEES_WRITE",
      "INVENTORY_READ",
      "INVENTORY_WRITE",
      "ITEMS_READ",
      "ITEMS_WRITE",
      "MERCHANT_PROFILE_READ",
      "ORDERS_READ",
      "ORDERS_WRITE",
      "PAYMENTS_READ",
      "PAYMENTS_WRITE",
      "PAYMENTS_WRITE_ADDITIONAL_RECIPIENTS",
      "PAYMENTS_WRITE_IN_PERSON",
      "SETTLEMENTS_READ",
      "TIMECARDS_READ",
      "TIMECARDS_WRITE",
      "TIMECARDS_SETTINGS_READ",
      "TIMECARDS_SETTINGS_WRITE",
      "APPOINTMENTS_READ",
      "APPOINTMENTS_WRITE",
      "APPOINTMENTS_BUSINESS_SETTINGS_READ",
      "INVOICES_READ",
      "INVOICES_WRITE",
      "SUBSCRIPTIONS_READ",
      "SUBSCRIPTIONS_WRITE",
      "DISPUTES_READ",
      "DISPUTES_WRITE",
      "GIFTCARDS_READ",
      "GIFTCARDS_WRITE",
      "ONLINE_STORE_SNIPPETS_WRITE",
      "ONLINE_STORE_SNIPPETS_READ",
      "ONLINE_STORE_SITE_READ",
      "PAYMENTS_WRITE_SHARED_ONFILE",
      "APPOINTMENTS_ALL_READ",
      "APPOINTMENTS_ALL_WRITE",
      "MERCHANT_PROFILE_WRITE",
      "VENDOR_READ",
      "VENDOR_WRITE",
      "PAYOUTS_READ",
      "REPORTING_READ",
      "DEVICES_READ",
      "LOYALTY_READ",
      "LOYALTY_WRITE"
    ]
  }
}
Observed by MCP Tools Edge Scanner