MCP Bridge by Appfactor
MCP Bridge by Appfactor is a self-hosted solution designed to bridge the gap between existing APIs and AI agents, particularly Large Language Models (LLMs).
Our verdict
Who it's for
Expose any API to AI agents without rewrites
Who should look elsewhere
Requires self-hosting and Docker knowledge for deployment.
Pros
- +Significantly reduces development time for integrating APIs with AI agents.
- +Optimizes token usage for LLMs, leading to cost savings and improved performance.
- +Self-hosted architecture ensures data privacy and security.
- +Supports a wide range of API protocols (REST, GraphQL, SOAP, gRPC).
- +Provides AI-specific observability and governance features.
Cons
- −Requires self-hosting and Docker knowledge for deployment.
- −May have a learning curve for understanding MCP and AI agent integration concepts.
- −Specific details on advanced features like custom JavaScript sandboxing might require deeper technical understanding.
Key features
- ✓Auto-generate MCP tool definitions from API schemas (OpenAPI, GraphQL, WSDL, gRPC)
- ✓Self-hosted deployment via Docker on various orchestrators (AWS ECS, Azure Container Apps)
- ✓Runtime execution with input validation, parameter mapping, and authentication handling
- ✓Response post-processing to reduce token waste for LLMs
- ✓Code Mode for large APIs to reduce context window usage by ~98% with meta-tools
- ✓Tool curation (enable, rename, edit descriptions, customize parameter mappings)
- ✓Enterprise authentication support (Bearer, Basic, API Key, OAuth2, AWS Cognito SRP, OIDC)
- ✓Analytics dashboard for latency, throughput, token usage, and error rates
Pricing
| Plan | Price | Billing | Notes |
|---|---|---|---|
| Starter | $0 | month | One user; Basic AI Assistant; Limited Brand Voice |
| Team | $449 | month | Everything in Creator, plus:; 3 user seats, expandable up to 5; 3 Custom Brand Voices |
| Enterprise | $999 | month | Everything in Pro, plus:; Unlimited user seats; Dedicated account manager |
| Free | $0 | month | 1 user seat; Basic AI assistance; Limited Brand Voice |
| Professional | $4499 | month | Everything in Creator, plus:; 3 user seats, expandable up to 5; 3 Custom Brand Voices |
| Enterprise | $9999 | month | Everything in Pro, plus:; Unlimited user seats; Dedicated account manager |