How to Build Your Own HashiCorp Vault
Replace HashiCorp Vault with a custom build. Manage, store, and tightly control access to tokens, passwords, certificates, and encryption keys for protecting secrets and other sensitive data using a UI, CLI, or HTTP API.
Build Difficulty: 4/5
A few focused days to build a solid replacement
Estimated Timeline
Based on 44 features at Few Days difficulty, expect about 3-5 days with AI-assisted development.
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Key Features to Replicate
Top features across 8 categories. See all 44 features
Access Control(9 features)
Authenticate applications using role-based credentials for secure machine-to-machine access.
Support multiple auth methods including LDAP, OAuth, JWT, Kubernetes, and cloud-native integrations.
Control who can access what secrets through fine-grained policy definitions.
Unify identity across multiple auth methods with entities and groups.
Authenticate services using JWT tokens for modern microservices architectures.
+4 more in this category
Security(7 features)
Encrypt and decrypt data using Vault-managed keys without storing sensitive data in applications.
Automatically rotate encryption and authentication keys on a defined schedule.
Support KMIP protocol for key management interoperability with external systems.
Immediately revoke credentials and invalidate secrets for quick response to security events.
Enforce multi-factor authentication for enhanced security.
+2 more in this category
Cloud(5 features)
Generate temporary AWS access credentials based on IAM policies.
Generate temporary Azure service principal credentials and manage Azure resources.
Generate temporary GCP service account credentials and manage GCP resources.
Generate Kubernetes authentication tokens and service accounts.
Use AWS S3 for cost-effective, scalable secret storage.
Infrastructure(5 features)
Automatically authenticate Vault Agent using configured auth methods.
Deploy Vault in HA configuration with automatic failover for fault tolerance.
Deploy Vault Agent Proxy for transparent request proxying and secret injection.
Use integrated Raft consensus for clustering without external storage dependencies.
Dynamically render configuration files with secrets from Vault.
Enterprise(4 features)
Isolate secrets and policies across multiple teams and projects within a single Vault cluster.
Scale read performance with standby replicas that handle non-mutating operations.
Enable multi-region disaster recovery and performance replication for high availability.
Enforce fine-grained policy decisions using Vault's policy language for advanced access control.
Core(3 features)
Generate temporary credentials on-demand with automatic expiration and revocation.
Automatic credential lifecycle management with lease tracking and renewal.
Securely store and manage passwords, API keys, and other secrets with encryption at rest.
Integrations(3 features)
Store Vault data in Consul for distributed, highly available deployments.
Dynamically generate database credentials with automatic rotation and least privilege.
Generate and manage SSH certificates and one-time passwords for secure access.
Interface(3 features)
RESTful HTTP API for programmatic access and integration with applications.
Command-line interface for managing secrets and Vault configuration.
User-friendly web interface for managing secrets, policies, and audit logs.
Cost Calculator
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Total Cost Comparison
DIY hosting estimate based on Vercel + Supabase free/pro tiers (~$20/mo). Build time estimated from 44 features at easy complexity.