Best Cost AI Skills & MCP Servers

The agent eval standard for MCP. Score every agent output for quality, safety, and cost.

MCP server providing AI agent observability — tracing, cost tracking, performance monitoring, and audit trails

MCP server for per-agent cost attribution, budget management, and spend analytics across AI agent fleets

Agent Output Guard MCP Server - Validate and verify data from other agents before acting on it. Zero LLM costs, pure computation. Solves coordination failures in multi-agent systems.

MCP server for CostHawk - AI API cost monitoring and optimization with Claude Code tracking

Security, cost, and health governance proxy for MCP infrastructure — three-layer detection engine (regex + schema + LLM), monorepo, corpus, CI/CD

Log10x MCP Server — per-pattern log cost attribution, root-cause investigation, pasted-batch triage, archive query/backfill, and cross-pillar correlation against customer metric backends (Grafana Cloud, Mimir, Thanos, AMP) with structural validation that

45 specialized judges that evaluate AI-generated code for security, cost, and quality.

Local-first MCP server for Claude Code cost analysis, budgets, forecasts, anomalies, and subagent-aware optimization from local JSONL session logs.

Vexp — Context Engine for AI Coding Agents. Pre-indexes your codebase into a dependency graph and delivers ranked context to any MCP-compatible agent. 58% lower cost per task, 90% fewer tool calls (SWE-bench Verified). Works with Claude Code, Cursor, Copi

MCP server for generating game assets using AI (images, sprites, weapons, backgrounds, logos, thumbnails, music). gpt-image-2 pipeline, cost/latency telemetry, stateful HTTP sessions, Phaser layer mapping, quality review.

MCP server for MarginFront. Lets AI agents (Claude, Cursor, Copilot) record usage events, query revenue / cost / MRR analytics, manage customers + subscriptions + pricing plans, browse the supported-services catalog, generate and email invoices, and manag

Transparent proxy CLI for MCP servers — tracks tool calls, latency, and cost via MCPSpend.

MCP server for Terraform cost, lint, security, and cloud best-practice guidance.

ChenXi Audit Assistant MCP Server (stdio transport)

Time Estimation MCP Server — 24 tools for PERT, COCOMO II, Monte Carlo, sprint forecasting, token-to-time mapping, cost estimation, and schedule risk. Self-improving. MCP + CLI + REST.

Alephant MCP Server — query AI spend, manage virtual keys and policies from your AI IDE

MCP server for AWS Pricing Calculator — create estimates, get shareable links, and retrieve actual AWS-calculated costs. Supports all 400+ AWS services, EC2 Savings Plans, sub-service resolution, and headless browser cost verification.

AI-native CI/CD that runs on your machine. Zero config, zero cost. Works inside AI agent sandboxes (Claude, Cursor, Windsurf). 33 languages, 40+ frameworks, 22 deploy targets, 25 installable skills, Tailscale mesh, blast radius analysis.

Screen-reader navigation cost analyzer. Measures how hard it is for AT users to discover, reach, and operate web content.

Time Estimation MCP Server — 24 structured tools for PERT, COCOMO II, Monte Carlo, sprint forecasting, token-to-time mapping, cost estimation, schedule risk, and model comparison. Self-improving engine with estimation feedback loop. MCP + CLI + REST API.

MCP server with 22 tools for marketplace search, price comparison, license verification, childcare costs, estate sales, storage pricing, GSA auctions, home services, FCC lookup, and AI skill safety — TCGPlayer, Reverb, Grailed, Redfin, Poshmark, Craigslis

1trip PULSE — The #1 travel planning MCP server. 21 tools, 5 resources, 6 prompts. Live flights, hotels, weather, currency, visa, safety (50+ countries), trip skeletons, validation, insights, packing, local tips, personas. 120+ city cost index. Works with

TRACE32 debugger MCP server — low-cost MCP frontend for session, dialog, field, history, and resource inspection with stable cold start.