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Langtail vs Agent Role Contracts

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Langtail compared with Agent Role Contracts
DetailLangtail logo LangtailAgent Role Contracts logo Agent Role Contracts
What it doesPrompt management platform for building, testing, and deploying AI prompts collaboratively Offline checker for AI agent role declarations without executing agents
StageNot given Not given
Founded2023 Not given
Based inCZ JP
Pricing modelNot given Open source
PricingFree plan: $0/month with unlimited users, 2 prompts or assistants, 1,000 logs per month, 30 days data retention. Pro: $99/month + VAT for 1 user, 20 prompts or assistants, unlimited logs, 90 days data retention. Team: $499/month + VAT for 10 users, unlimited prompts or assistants, unlimited logs, 1 Not given
Key features
  • Spreadsheet-like interface for managing prompts with no coding required
  • Natural language evaluation, pattern matching, and custom code testing
  • Experiment with models and parameters to optimize prompts
  • Data-driven insights from prompt performance and user interactions
  • AI Firewall preventing prompt injections and DoS attacks
  • Support for multiple LLM providers
  • TypeScript SDK and OpenAPI support
  • Self-hosting option for maximum security
  • Checks role and authority consistency
  • Validates reviewer-implementer separation
  • Verifies role references exist
  • Checks filesystem write scope boundaries
  • Runs completely offline without network access
  • Three command modes: validate, explain, and handoff
  • Clear exit codes for pass/fail/error states
  • MIT open source license
  • Bundled starter fixtures and examples
What makes it different
  • Prevents unpredictable LLM outputs through proper prompt management and testing
  • Non-technical teams can manage prompts with intuitive spreadsheet interface
  • Built-in AI Firewall for security and safety of AI outputs
  • Works seamlessly with all major LLM providers
  • Designed through public feedback dialogue with incorporated role and path mapping improvements
  • Bundles working examples that run without API keys or accounts
Community votes00
DR (Domain Rating by Ahrefs)29 no change since last check13 no change since last check
Trust Flow (Majestic)69
Citation Flow (Majestic)3429
Referring domains (Majestic)27551

4 details filled in for both companies.

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