Latest
MCP Hangar Is Now Fully MIT
May 17, 2026 • MCP Hangar Team
Everything in mcp-hangar is now MIT, effective v1.2.2. This release removes the dual-license model and simplifies the codebase for all users.
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Engineering updates from the MCP Hangar team.
May 11, 2026 • MCP Hangar Team
Tool Integrity for MCP: Digest Pinning in MCP Hangar v1.2
v1.2 introduces SHA-256 digest pinning for MCP tool schemas, implementing a preemptive version of SEP-1766 to detect drift and block unauthorized mutations.
May 11, 2026 • MCP Hangar Team
SEP-1763 Compliance: How MCP Hangar Became an MCP-Native Interceptor
v1.2 implements SEP-1763 P1: hook-based event model, wildcard subscriptions, IMutator contract with priority-ordered pipeline, and interceptors/list endpoint.
May 10, 2026 • MCP Hangar Team
MCP Hangar v1.1 -- Cost Attribution, Compliance Export, and End-to-End Caller Identity
v1.1 adds per-tool-call cost tracking, SIEM-ready compliance export (Splunk, Datadog, Sentinel), and end-to-end caller identity in every OTEL span.
April 17, 2026 • MCP Hangar Team
MCP Hangar v1.0.1 -- Hardening After the April Audit
Security hardening release: SSRF protection, default-deny command allow-list, granular RBAC, WebSocket origin validation, and trusted proxy resolution.
April 11, 2026 • MCP Hangar Team
MCP Hangar v1.0 -- Production Release
MCP Hangar v1.0 ships identity propagation, compliance-grade audit, Kubernetes enforcement, and sub-millisecond proxy overhead.