Problem Definition
As Model Context Protocol (MCP) emerges as the standard for AI agent connections, developers face new challenges:
- Testing Difficulty: No standard way to test MCP server tools, resources, and prompts
- Debugging Complexity: Need to support multiple transport protocols (STDIO, SSE, HTTP)
- Official Tool Gaps: Anthropic’s official inspector has limited features and slow development
In 2026, the MCP market is exploding with 97M+ monthly SDK downloads.
Market Analysis
| Metric | Value |
|---|---|
| MCP Market Size (2025) | $1.8B |
| Monthly SDK Downloads | 97M+ |
| Major Adopters | Microsoft, Google, Salesforce, SAP |
Target Customers: Developers building MCP servers, AI agent builders
Solution: MCPJam Inspector
MCPJam Inspector is “Postman for MCP” - a visual developer tool for MCP servers.
Core Features
- Multi-Protocol Support: STDIO, SSE, Streamable HTTP
- Real-time JSON-RPC Observation: Full request/response tracing
- LLM Integration Testing: Direct connection to Claude, OpenAI, Ollama
- Save & Reuse: Store and share test cases
- React-based UI: Modern and intuitive interface
Quick Start
npx @mcpjam/inspector@latest
# Browser auto-opens at http://localhost:6274
Competitive Landscape
| Competitor | Focus | Weakness |
|---|---|---|
| Anthropic Inspector | Official tool | Limited features, slow dev |
| Manual Testing | curl/scripts | Inefficient |
| Custom Tools | Team-built | Duplicated effort |
Competition Intensity: Medium (Blue Ocean - no dedicated tool exists)
MVP Development Plan
| Phase | Duration | Scope |
|---|---|---|
| Phase 1 | 1.5 weeks | React UI foundation |
| Phase 2 | 1.5 weeks | STDIO/SSE client |
| Phase 3 | 1 week | JSON-RPC observation UI |
| Phase 4 | 1 week | Test save/load |
Total MVP Duration: 4-6 weeks Tech Stack: React, TypeScript, Node.js, Electron (optional)
Revenue Model
| Plan | Price | Features |
|---|---|---|
| Free (OSS) | $0 | Core features, community |
| Pro | $10/mo | Advanced analytics, team sharing |
| Team | $8/user/mo | Collaboration, CI/CD integration |
| Enterprise | Contact | On-premise, dedicated support |
Expected MRR (12 months): $3,000 - $10,000
Risk Analysis
| Risk | Level | Mitigation |
|---|---|---|
| Technical | Low | MCP protocol is stabilized |
| Market | Medium | Depends on MCP adoption (currently surging) |
| Execution | Low | Can fork existing open-source |
Recommendation
- Domain Fit: dev_tools, api_tools (preferred domains)
- Tech Fit: React, Node.js (skill match)
- Market Timing: MCP becoming “USB-C for AI” standard
- Fast MVP: Launch within 4-6 weeks
Overall Score: 88/100