Reviewed by Harsh Desai · Last reviewed:
Hasmcp
An OpenAPI to MCP converter that deploys secure LLM tools without writing code.
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What does Hasmcp do?
- •Zero-code deployment instantly deploys MCP tools from OpenAPI specs to a dashboard in seconds.
- •OAuth2 elicitation automatically prompts for dynamic auth without exposing credentials to agents.
- •Encrypted vault stores secrets and proxies securely with end-to-end encryption for LLM safety.
- •JMESPath pruning declaratively reduces tokens by 95 percent using precise response filters.
- •Request interceptors scrub PII and modify payloads before they reach any LLM model.
- •Real-time telemetry provides logs, usage metrics, and automatic rate limiting in one view.
- •Multi-agent compatibility works natively with Claude, Cursor, Zed, ChatGPT plus custom agents.
- •MCP composition combines tools from multiple servers into unified agent workflows.
- •Swagger support processes both OpenAPI 3.0/3.1 and legacy Swagger definitions accurately.
- •Self-hosted option run the open-source edition on your own infrastructure for full control.
- •OpenAPI Conversion Transforms any OpenAPI 3.0 or 3.1 specification into 50+ structured MCP tools within seconds.
- •Instant Dashboard Deploys your bridge to a live interactive dashboard with zero code and zero installation required.
- •PII Scrubbing Automatically removes personally identifiable information through configurable request and response interceptors.
- •Rate Limiting Applies automatic intelligent rate limiting with real-time logs and telemetry across all connected agents.
Pricing:
- •Free $0/mo: 250 tool calls/mo for single-user prototypes and testing.
- •Pay-as-you-go usage-based: scales for cloud hobby projects and production workloads.
- •Enterprise custom: dedicated support, higher limits, and on-premise deployment options.
What are Hasmcp's limitations?
- •Call limits free tier restricted to 250 calls/mo and single user only.
- •Spec requirement needs a valid OpenAPI or Swagger file to generate any tools.
- •Cloud latency high-volume usage on cloud version can add noticeable delays.
- •Self-host management community edition demands separate setup and ongoing maintenance.
Our Verdict
For the Vibe Builder, Hasmcp delivers an effortless bridge that turns any OpenAPI spec into an LLM-ready MCP server without writing a single line of glue code, letting creative minds focus on crafting delightful conversational flows instead of wrestling with authentication headers or endpoint mappings. Its no-code approach means prototypes can be spun up in minutes, helping rapid iteration on AI-powered interfaces that feel magical and intuitive. The free tier supports up to 250 tool calls per month for single-user experimentation, making it ideal for early-stage vibe exploration before committing to paid scaling. This smooth conversion process opens up creative potential by removing technical barriers that often stifle innovation in AI tooling ecosystems.
For the Developer, Hasmcp simplifies the path from existing REST APIs to production-grade MCP servers by automatically handling schema translation, function calling formats, and server hosting so backend teams can integrate LLMs faster without custom middleware. Pay-as-you-go pricing aligns costs with actual usage, supporting scalable cloud deployments or hobby projects while the self-hosted community edition offers control for sensitive environments. It respects valid OpenAPI or Swagger documents as the single source of truth, reducing maintenance overhead across evolving services. Overall the tool accelerates delivery cycles by converting specification-driven backends into LLM-compatible endpoints with minimal engineering effort.
One honest limitation is that the free tier caps usage at 250 calls per month for a single user only, the requirement for a complete OpenAPI specification can exclude incomplete or non-standard APIs, and cloud latency may appear during high-volume traffic while self-hosted options demand extra operational management; these constraints keep it from being universally perfect so it earns a 7.5/10 for balanced practicality versus flexibility.
Skip it if you need unlimited free calls or have no OpenAPI spec ready and consider Building your own lightweight proxy instead.
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Frequently Asked Questions
What is Hasmcp and how does it create MCP tools?
Hasmcp is a platform by HasMCP that lets developers quickly build and deploy MCP tools for AI agents through a simple code-first interface where you define functions, add natural language descriptions, and it automatically generates the necessary schemas and endpoints.
Is there a free plan and what are the limits?
Yes Hasmcp has a free tier at $0/mo that includes 250 tool calls per month which works well for single-user prototypes and testing but does not cover production scale.
Who should use Hasmcp for AI agent development?
Hasmcp works best for indie developers and small teams building AI agents who want to skip the boilerplate of creating MCP tools from scratch while still maintaining full control over their function logic.
How does Hasmcp compare to ITEM MCP or custom wrappers as an alternative?
Compared to ITEM MCP or custom wrappers Hasmcp offers faster setup with automatic schema generation and built-in hosting whereas ITEM MCP focuses more on standardization and custom wrappers require more manual maintenance but give you complete flexibility.
What is the pricing for all Hasmcp tiers in 2026?
Hasmcp pricing includes a Free plan at $0/mo with 250 tool calls per month for single-user prototypes and testing a Pay-as-you-go usage-based option that scales for cloud hobby projects and production workloads and an Enterprise custom plan with dedicated support higher limits and on-premise deployment options.
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Hasmcp
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