- Resilience Score (1-10): weighted 4-factor model (transit diversity 30%,
peering breadth 25%, IXP presence 20%, path redundancy 25%), hard cap at
5.0 on single transit provider. Confidence: HIGH (cross-validated data).
- Route Leak Detection: heuristic Tier-1 sandwich/downstream pattern check.
Confidence: MEDIUM — pattern-based, not real-time, false positives flagged.
- Data Provenance System: every API response field includes source, validation
method and confidence level. UI shows green/orange provenance badges.
- MCP Server: exposes PeerCortex as Claude Desktop/Code tools (lookup_asn,
compare_networks, get_health_report, search_network, get_resilience_score).
For ASNs with no PeeringDB entry and no RIPE Stat holder (e.g. reserved
or unannounced ASNs), extract name from bgp.he.net page title and
country code from the /country/XX href. Eliminates the last 2 CRITICAL
audit failures (AS34465 → 'RIPE NCC ASN block'/GB, AS59947 → 'LLHOST
INC. SRL'/RO). Audit result: 80/82 PERFECT, 0 CRITICAL. v0.6.8.
