lob.usefulapi.io
https://lob.usefulapi.io/mcp
63
trust
0.55
confidence
medium
risk
trust-2026-08-12.2
observed 2d ago
Why this score
| oauth_metadata_present | +14 |
| mcp.unauthenticated_consequential_tools | -8 |
| tls_present_and_valid | +4 |
| mcp_capabilities_discoverable | +4 |
| headers.missing_hsts | -3 |
| reachable | +2 |
Findings (2)
| medium | Capabilities are listable without authentication, including 4 whose names suggest state change (lob_cancel_postcard, lob_create_address, lob_create_letter, …) — inferred from tool names, not confirmed mcp.unauthenticated_consequential_tools @ 1.0.0 |
| low | No Strict-Transport-Security header headers.missing_hsts @ 1.0.0 |
Evidence (8)
| Type | Observed | SHA-256 |
|---|---|---|
| dns_resolution_observation | 2d ago | a305f20829e5eb84… |
| http_response_observation | 2d ago | 6ec846582bddc041… |
| availability_observation | 2d ago | 888f7debd910d6be… |
| hosting_provider_observation | 2d ago | e7292135d1d3f6bd… |
| tls_certificate_observation | 2d ago | c6e249bb4605b9b2… |
| oauth_metadata_observation | 2d ago | e3b4b9ace1a2f395… |
| mcp_protocol_observation | 2d ago | 7a700aace7a2e818… |
| mcp_capability_observation | 2d ago | 0431f2a29e56d520… |
Every record is append-only and content-hashed. Corrections supersede; nothing is overwritten.
Operate this service?
Prove control of lob.usefulapi.io to correct the record and request a rescan after fixing a finding. One DNS record — no account needed.