Endpoint Check

Use when the user wants to verify that an HTTP endpoint is alive, measure its latency, or inspect a TLS certificate's expiry and issuer. Combines naturally with Phase 7 heartbeat for periodic monitoring.

Use when

• "Is my API up?"
• "How long until cert X expires?"
• "Check my endpoints and alert me if something fails" (pair with heartbeat)
• Verify that a deployment published new code (compare response body)

Do not use when

• You need complex auth (OAuth, mTLS) — use fetch-url or a dedicated extension
• You need full body download — use fetch-url
• It is an internal container health check — use the orchestrator-native check

Tools

status

No args. Info + limits.

http_probe { url, method?, timeout_secs?, follow_redirects?, expected_status? }

• url required (http/https)
• method GET (default) or HEAD
• timeout_secs 1..60 (default 10)
• follow_redirects default true
• expected_status optional: returns matches_expected: bool

Returns {status, latency_ms, final_url, content_type, body_preview (≤500 chars), [matches_expected]}.

ssl_cert { host, port?, timeout_secs?, warn_days? }

• host required
• port default 443
• timeout_secs 1..60 (default 10)
• warn_days default 30 — sets expiring_soon: true below threshold

Returns {subject, issuer, sans, serial_hex, signature_algorithm, chain_length, not_before_unix, not_after_unix, seconds_until_expiry, days_until_expiry, expiring_soon, expired}.

Note: this tool does not validate trust chains — expired/self-signed certs still return parsed metadata. Use expired/expiring_soon to decide.

Execution guidance

• For periodic monitoring, combine with heartbeat: probe every N minutes and alert when status changes or expiring_soon flips true.
• For deploy comparisons, store baseline probe output in TaskFlow state_json and diff against new runs.
• ssl_cert is informational; for actionable alerts, use days_until_expiry with a stricter threshold (e.g., 14 days).
• Error -32005 timeout means server did not reply within timeout_secs.
• Errors -32060/-32061 in ssl_cert usually indicate DNS/TCP connect issues.