MCPSpend
★ 71
vs
lmnr
★ 3.4k
MCPSpend vs lmnr
MCPSpend: MCPSpend provides real-time cost tracking for every MCP tool call across popular AI agent environments including Cursor, Claude Desktop, Windsurf, and VS Code. It offers a free tier of 25,000 tool calls per month and three ways to query usage: a web dashboard, an MCP server, and an HTTP API.; lmnr: Laminar is an open-source observability platform specifically designed for AI agents. It provides comprehensive tools for tracing, evaluation, and monitoring of AI agent behavior and performance.
01
TL;DR
MCPSpendObservability · ★ 71
Monitor and optimize AI agent spending
lmnrObservability · ★ 3.4k
Debugging and understanding the execution flow and internal states of AI agents.
02
Side-by-Side Comparison
Field
MCPSpendlmnrCategory
Observability
Observability
Stars
★ 71
★ 3.4k
License
MIT
Apache-2.0
Install Command
npx --yes @mcpspend/proxy@latest init --key mcps_live_xxx
git clone https://github.com/lmnr-ai/lmnr && cd lmnr && docker compose up -d
Updated
1mo ago
1d ago
Open Source
Yes
Yes
Tags
ai-agents, ai-observability, claude-desktop
AI Observability, Tracing, LLM Evals
03
Features
MCPSpend01Real-time cost tracking for MCP tool calls
02Auto-detects and wraps configured MCP servers in popular clients
03Privacy-first: does not send tool arguments or responses
04Multiple query methods: web dashboard, MCP server, HTTP API
05Free tier with 25,000 calls per month
lmnr01OpenTelemetry-native tracing SDK with support for various AI SDKs (Vercel AI SDK, LangChain, OpenAI, etc.).
02Unopinionated, extensible SDK and CLI for running evals, with a UI for visualizing and comparing results.
03AI monitoring with the ability to define events using natural language descriptions to track agent behavior.
04SQL access to all collected data (traces, metrics, events) via a built-in SQL editor and API.
05High-performance architecture written in Rust, featuring a custom real-time engine and ultra-fast full-text search.
04
Use Cases
MCPSpend↳Monitor and optimize AI agent spending
↳Budget and alert on MCP tool usage
↳Analyze cost and performance per tool and server
lmnr↳Debugging and understanding the execution flow and internal states of AI agents.
↳Evaluating the performance, quality, and reliability of AI agents and their responses.
↳Monitoring AI agents in production for anomalies, logical errors, and custom business behaviors.
05
Best For
MCPSpend—
lmnrEssentialTrending
FAQ
FAQ
What is the difference between MCPSpend and lmnr?
Both MCPSpend and lmnr are in the Observability category. MCPSpend has 71 stars, while lmnr has 3.4k stars.
Which is better, MCPSpend or lmnr?
The best choice depends on your use case. Choose MCPSpend if Monitor and optimize AI agent spending, and lmnr if Debugging and understanding the execution flow and internal states of AI agents..
Is MCPSpend free or open source?
Yes, MCPSpend is open source on GitHub (MIT).
Is lmnr free or open source?
Yes, lmnr is open source on GitHub (Apache-2.0).
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