{"id":"linuxserver-heimdall","name":"heimdall","af_score":32.5,"security_score":56.2,"reliability_score":30.0,"what_it_does":"heimdall is a Go-based library/CLI framework for implementing request signing and verification (in the style of an HMAC/secret-based guard) to authenticate clients and protect endpoints. It focuses on generating and validating signed requests/tokens to ensure integrity and authenticity.","best_when":"You need lightweight request authentication using a shared secret and want deterministic verification of signed payloads/requests.","avoid_when":"You need fine-grained user permissions, key rotation with standards-based identity, or you cannot safely manage shared secrets.","last_evaluated":"2026-03-30T13:24:40.140420+00:00","has_mcp":false,"has_api":false,"auth_methods":["Shared-secret request signing (e.g., HMAC-style) for verification"],"has_free_tier":false,"known_gotchas":["As a library, agent integration depends on correct signing/verification wiring in the host application (middleware, canonicalization rules, clock skew/expiry handling).","If the library requires exact payload canonicalization, mismatches can lead to verification failures that look like auth errors.","Shared-secret management and rotation are the responsibility of the integrating service."],"error_quality":0.0}