Calc Eval
Evaluate a+b style arithmetic. Expression discarded.
MCP server · by sadri-dridi
About
Calc Eval is an MCP server published by sadri-dridi. Marketplaces we read that list it: 1 (Official MCP Registry). We first saw it on 2026-10-11 and have recorded no change since. As of our marketplace pass on 2026-10-13.
What it asks for
- Runs remotely
None of the marketplaces we read publishes its tools or the settings it asks for.
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Works with
- Claude Code
- Codex
- Cursor
- VS Code
- Copilot CLI
A one-click link opens the client, which asks you to confirm before it adds the server.
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a remote MCP server
Built from what Official MCP Registry declares.
claude mcp add --transport http calc-eval https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/calc-eval/mcp[mcp_servers.calc-eval]
url = "https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/calc-eval/mcp"{
"mcpServers": {
"calc-eval": {
"url": "https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/calc-eval/mcp"
}
}
}Where it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Official MCP Registry (Open the registry record) | Listed | 1.0.0 | Forks (GitHub): 0 Stars (GitHub): 0 |
Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
What changed
Nothing has moved on this plugin since we started watching it.
Similar plugins
Products whose own names, descriptions, tools and skills are closest in meaning to this one, on every marketplace we read. Closeness is ranked within this list only.
-
Learning Model Context Protocol
MCP server that can perform basic arithmetic operations and parse/evaluate arithmetic expressions.
-
Scientific Math Calculator MCP
Safe scientific calculator MCP for numeric expressions
-
Evaluates Reverse Polish Notation (postfix) expressions: arithmetic, trig, logs, bitwise ops.
-
Math.js MCP — wraps the mathjs.org API (free, no auth)
-
Exact arithmetic: one calculator tool over an AST allowlist, with integers exact at any size.
-
Exact arithmetic for AI agents. Two independent engines cross-check every result.
-
calculator com.mcpcalc/calculator
Calculators accessible via MCP with real-time collaborative sessions and shareable URLs.
-
calculator-mcp-server io.github.cyanheads/calculator-mcp-server
Evaluate, simplify, and differentiate mathematical expressions.
-
arithym xyz.arithym/arithym
Precision math engine for AI agents. 203 exact methods. Zero hallucination.
-
math-solver-ai-mcp io.github.CSOAI-ORG/math-solver-ai-mcp
Math Solver Ai MCP Server by MEOK AI Labs
Similar plugins by marketplace
The same question asked of one marketplace at a time: is there an analog of this plugin there?
Has a listing on Claude Code: claude-plugins-community (5)
-
Convert MCP servers to token-efficient CLI tools with auto-generated SKILL.md files for Claude Code agents
-
AI agent evaluation sandbox for Claude Code. Holdout scenario testing with Doer/Judge/Adversary/Observer roles, probabilistic satisfaction scoring, and append-only JSONL audit…
-
Interactive PTY sessions for AI agents. Supports local shell, SSH, serial port, and persistent remote sessions via MCP. Enables AI agents to run interactive commands, connect to…
-
claude-code-organizer io.github.mcpware/claude-code-organizer
Organize Claude Code memories, skills, MCP servers, commands, agents, rules via drag-and-drop.
-
MCP server for terminal commands, file operations, and process management
Has a listing on Claude Code: claude-plugins-official (5)
-
MCP server for terminal commands, file operations, and process management
-
Find the right NVIDIA skill for GPU acceleration, CUDA, AI agents, data loading, training, inference, robotics, Physical AI, Omniverse, simulation, and other NVIDIA-powered…
-
Two skills for hard mathematics problems, each ending in a self-contained proof.md: /math-proof:solo has the session work the problem itself in stages with a notes file…
-
Solve competition math (IMO, Putnam, USAMO) with adversarial verification that catches what self-verification misses. Fresh-context verifiers attack proofs with specific failure…
-
mdk-mcp-server io.github.SAP/mdk-mcp-server
Model Context Protocol (MCP) server for AI-assisted development of MDK applications.
Has a listing on Claude: knowledge-work-plugins (5)
-
MCP server for terminal commands, file operations, and process management
-
Figma design platform integration. Access design files, extract component information, read design tokens, and translate designs into code. Bridge the gap between design and…
-
Skills for working with Langfuse, the open-source LLM engineering platform for tracing, prompt management, and evaluation.
-
Hosted MCP server for AI-assisted Grafana Cloud observability — no local installation required.
-
Connects Claude Code to the Synthflow AI voice-agent platform through its hosted MCP server, with skills for reviewing calls and auditing agent prompts, plus a docs-search…
Has a listing on Codex: openai-curated (openai/plugins) (5)
-
Evaluate Codex skills and plugins from chat with a beginner-friendly start command, local-first reports, token budget explanations, and guided benchmarking.
-
Skills for NVIDIAs ecosystem spans GPU acceleration, CUDA, AI agents, inference, robotics, Physical AI, Omniverse, and simulation. This plugin helps you understand the pieces…
-
Build with OpenAI APIs, Agents SDK, and ChatGPT Apps, and create and save OpenAI API keys from Codex.
-
Predict structures, screen molecules and proteins, and design binders.
-
Install, open, and connect the signed ChatCut Desktop app from Codex.
Has a listing on Community GitHub marketplaces (5)
-
MCP server for terminal commands, file operations, and process management
-
HTTP/REST client with saved collections, env secrets, and SSRF-safe host allowlisting.
-
Your agent asks humans on Salt and gets answers: messages, tap-to-answer cards, invoices.
-
Sandboxed local filesystem: read, search, edit, copy, archive, and safely manage files.
-
Has a listing on Copilot CLI: github/awesome-copilot (5)
-
Safe BLE diagnostics, evidence workflows, and guarded automation for AI agents.
-
Visualizes live session AI-credit usage as a Pac-Man board with pellets, ghosts, fruit milestones, and game-over limits.
-
Complete toolkit for building Model Context Protocol (MCP) servers in Go using the official github.com/modelcontextprotocol/go-sdk. Includes instructions for best practices, a…
-
Figma design platform integration. Access design files, extract component information, read design tokens, and translate designs into code. Bridge the gap between design and…
-
Complete toolkit for building Model Context Protocol (MCP) servers in TypeScript/Node.js using the official SDK. Includes instructions for best practices, a prompt for generating…
Has a listing on Copilot CLI: github/copilot-plugins (5)
-
Toolkit for building Microsoft 365 Copilot declarative agents — scaffolding, JSON manifest development, and capability configuration.
-
Build Power Apps Canvas Apps using the Canvas Authoring MCP server.
-
mcp-apps
Generate MCP App widgets for MCP tools. Produces self-contained HTML widgets using the MCP Apps protocol.
-
workiq
Query Microsoft 365 data with natural language — emails, meetings, documents, Teams messages, and more.
-
mobile-app
Build and deploy Power Apps code apps for mobile using Expo (React Native), with native device functionality and Power Platform connectors
Has a listing on Cursor: cursor/plugins (5)
-
Iterative self-referential AI loops using the Ralph Wiggum technique.
-
Build apps, scripts, and automations with the TypeScript SDK.
-
Read, write, and append spreadsheet data.
-
playwright-mcp io.github.microsoft/playwright-mcp
Playwright Tools for MCP
-
Fan large tasks out across parallel cloud agents with planners, workers, verifiers, and structured handoffs.
Has a listing on Docker MCP Catalog (5)
-
Connect your chat repl to wolfram alpha computational intelligence.
-
Giving Claude ability to run code with E2B via MCP (Model Context Protocol).
-
Read and score Opik traces, experiments, datasets and prompts from your AI assistant.
-
A Python-based execution tool that mimics a Jupyter notebook environment. It accepts code snippets, executes them, and maintains state across sessions — preserving variables…
-
The Official Model Context Protocol (MCP) server for Kagi Search & other tools.
Has a listing on Official MCP Registry (5)
-
Learning Model Context Protocol
MCP server that can perform basic arithmetic operations and parse/evaluate arithmetic expressions.
-
Scientific Math Calculator MCP
Safe scientific calculator MCP for numeric expressions
-
Evaluates Reverse Polish Notation (postfix) expressions: arithmetic, trig, logs, bitwise ops.
-
Math.js MCP — wraps the mathjs.org API (free, no auth)
-
Exact arithmetic: one calculator tool over an AST allowlist, with integers exact at any size.
Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.
Is this your plugin?
Add it to your projects and prove you maintain it with a file in its repository, a file on your domain or a DNS record. You get alerts when a marketplace lists it, drops it, changes its verified mark or what it asks for, and its remote endpoint goes on monitoring as a web service.
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.