Key Features:
10 0 91,632
Other Tools and Integrations• MCP Alternatives Guide
Best Alternatives to Cal MCP
Looking for an alternative to Cal MCP? Whether you need a different runtime environment, custom authentication support, or alternative API integrations in the Other Tools and Integrations ecosystem, we have cataloged and compared the top alternative MCP servers below.
Target Reference Server
Cal MCP Overview
pwh-pwh/cal-mcp provides a single MCP tool for evaluating mathematical expressions with Bun, FastMCP, and expr-eval. The `cal` tool accepts an expression string through the `exp` parameter and returns the calculated result over stdio. Built-in values include `E`, `PI`, `true`, and `false`. Reach for it when an MCP client needs straightforward arithmetic or expression evaluation without a separate calculator service.
Primary Use Cases for Cal MCP:
- Evaluate arithmetic expressions in an MCP client
- Calculate values using E and PI
- Check results for compound mathematical expressions
- Add local calculator functionality to an agent workflow
Specification Matrix: Cal MCP vs Alternatives
Direct comparison of key metrics, runtimes, authentication methods, and community popularity.
| Server Name | Runtime | Auth | Pricing | GitHub Stars | Downloads | Action |
|---|---|---|---|---|---|---|
| bunx | No auth required | Free | 13 | — | Current | |
| npx | No auth required | Free | 91,632 | — | ||
| npx | No auth required | Free | 91,633 | — | ||
| npx | OAuth | Bring your own API key (usage-based cost) | 13,595 | — | ||
| npx | No auth required | Free | 25 | — | ||
| uvx | No auth required | Free | 160 | — | ||
| uvx | No auth required | Free | 91,633 | — | ||
| npx | API key | Free | 179 | — | ||
| npx | API key | Free | 390 | — | ||
| npx | No auth required | Free | 351 | — | ||
| Streamable HTTP (Remote) | No auth required | Free | 5,108 | — | ||
| uvx | API key | Free | 17,752 | — | ||
| uvx | API key | Free | 3,370 | — |
Detailed Evaluation of Cal MCP Alternatives
Key Features:
11 0 91,633
Key Features:
8 0 13,595
Key Features:
10 0 25
Key Features:
4 0 160
Key Features:
9 0 91,633
Key Features:
8 0 179
Key Features:
8 0 390
Key Features:
4 0 351
Key Features:
12 0 5,108
Key Features:
6 0 17,752
Key Features:
1 0 3,370
Frequently Asked Questions: Cal MCP Alternatives
The top-rated alternatives to Cal MCP in the Other Tools and Integrations category include Memory, Server Everything, Actors MCP Server. These servers offer complementary or alternative capabilities depending on your deployment stack and authentication requirements.
Cal MCP and its alternatives vary by runtime requirement (Node.js/npx, Python/uvx, Docker, or remote HTTP/SSE endpoints). Check the specification comparison table above to verify command requirements before installing.
It varies by server. Pricing, auth and license are declared by each maintainer and shown in the comparison table where provided — a dash means nothing was declared, so check that project's own site before assuming it's free.
Click the "Compare side-by-side →" button on any alternative card to see an in-depth comparison matrix covering feature lists, stars, npm downloads, install configurations, and schema specifications.