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Doppler vs PromptLock
Manages secrets for infrastructure, not real-time AI input filtering.
DopplerSecrets management for teams and infrastructure
PromptLockAI firewall that blocks prompt injection and redacts PII in one API callWhich to pick
Pick Doppler if you want…
- User-based pricing for unlimited agents
- Secrets management
- Integrations with Kubernetes, Webhooks or SDKs (on Doppler's list, not PromptLock's)
Pick PromptLock if you want…
- Compliance-aware prompt protection
- Integrations with n8n, Flowise or Bubble (on PromptLock's list, not Doppler's)
Side by side
- What it is
- Doppler:Doppler is a secrets management platform that secures, syncs and automates secrets for humans, AI agents and services across cloud and on-prem environments.
- PromptLock:PromptLock is an AI firewall that blocks prompt injection and redacts PII/PHI in a single API call.
- Best for
- Doppler:User-based pricing for unlimited agents
- PromptLock:Compliance-aware prompt protection
- Who it’s for
- Doppler:Developers, DevOps teams, AI agents and any automated workflows that need credentials.
- PromptLock:Teams building AI apps that handle regulated customer data.
- Pricing
- Doppler:Freemium
- PromptLock:Freemium
- Plans
- Doppler:Developer Free for 3 users · Team $21/mo per user per month
- PromptLock:Free $0/mo · Starter $49/mo per month · Pro $199/mo per month
- Works with
- Doppler:Kubernetes, Webhooks, SDKs
- PromptLock:n8n, Flowise, Bubble, Retool, RapidAPI
Doppler features
- Centralized secret store. All secrets are stored in one place, searchable and auditable.
- Dynamic secrets. Generate fresh credentials on each deploy and revoke automatically.
- Agent-scoped access. OIDC-scoped service accounts give each AI agent its own permissions.
- Audit-ready logs. Every secret access is logged and compliant with SOC 2 and ISO 27001.
- Native integrations. Connect to cloud platforms, Kubernetes, CI/CD pipelines, webhooks and SDKs.
- Config syncs. Synchronize secret configurations to infrastructure with limits per plan.
- Role-based access control. Fine-grained permissions, SAML SSO and identity-based authentication.
- On-prem or cloud deployment. Run Doppler in your own data center or use the managed cloud service.
PromptLock features
- Compliance-aware redaction. Detects and redacts HIPAA, GDPR, and PCI-DSS data based on context.
- Prompt injection detection. Blocks jailbreaks, system-prompt overrides and injection chains before they reach the LLM.
- Audit-ready logging. Logs every request with compliance tags and allows CSV/JSON export.
- One-line SDK integration. Add protection with a single function call in your code.
- Dashboard & usage insights. Provides request history, violation insights and compliance reporting.
- Rate limiting & abuse protection. Built-in limits (100/min) and key-based access control.
Doppler vs PromptLock FAQ
Is Doppler or PromptLock free?+
Doppler has a free plan (Developer); paid plans start at $21/month per user (Team). PromptLock has a free plan; paid plans start at $49/month (Starter).
Which is cheaper, Doppler or PromptLock?+
Doppler starts at $21/month per user (Team) and PromptLock starts at $49/month (Starter); the plans are billed differently, so compare what's included.
Do Doppler and PromptLock integrate with the same tools?+
Their integration lists don't overlap: Doppler lists Kubernetes, Webhooks and SDKs; PromptLock lists n8n, Flowise, Bubble, Retool and 1 more.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.