Free MCP servers · page 117

carlosphyll/phyll

UX review for apps built with AI, run by your own agent. The fixes keep your design.

JonesRobM/physbound

Physical Layer Linter: validates RF and radar calculations against hard physical limits.

genecell/PIASO-for-agents

PIASO single-cell ecosystem docs (PIASO, COSG, cytome, LARIS, cytorete) + live PIASOmarkerDB

jadenpxrk/mcp-piazza

Read-only Piazza access: activity, search, unread posts, full threads, and course info

mcn92/pikelet

Search self-contained .pikelet knowledge artifacts over MCP — no vector DB, no embedding API.

ricrio-inc/plainhub

Open files and diffs from your agent in PlainHub, and keep a shared ledger in your own GitHub repo.

ymxc152/plctap

Agent-PLC MCP Server: read & diagnose Modbus / FINS / MELSEC / S7 / IEC 104 / ENIP / OPC UA PLCs.

plugolis/plugolis-mcp

Search the Plugolis directory of MCP servers and step-by-step fixes for common MCP errors.

ianderso/polish-archives-mcp

Search Geneteka, the Poznań Project and BaSIA for Polish vital records; fetch archive scans.

trags-garden/poppy

Developer memory CLI and MCP server. Remember decisions, preferences, and lessons locally.

mdostal/portunus

Secret broker for agents: reference secrets by name; values injected only at the execution boundary.

SpeedosDK/predictive-debugger

Predicts where JavaScript and TypeScript code will fail at runtime, for coding agents.

koptsev63/premiere-claude-bridge

Assistant editor for Premiere Pro and DaVinci Resolve: logs, transcribes, rough cuts, subtitles, QC

incultnitollc/mcp-probe

Inspect and score any MCP server 0-100 on publishability, schema and protocol before publish.

zseta/progi

MCP-native workflow engine: teach agents your processes once, they execute them consistently.

Nodemint-dev/projectmind

Persistent project memory for AI coding agents: one compact digest instead of re-reading the repo.

veldica/publishready-mcp

PublishReady: Deterministic writing control with local-first metrics and AI prose audits.

avaazquezz/Qdrant-MCP

Exposes the full Qdrant vector database API as 56 MCP tools, not just store/find.

nickklos10/QueryPilot

Safe SQL gateway for AI agents: SELECT-only validation, access policies, masking, audit trail, evals

n3wth/r3

Local Redis memory MCP for AI apps with hybrid caching and optional Mem0 cloud backup.

RobThePCGuy/rag-vault

Local RAG MCP server with hybrid search, PDF/DOCX support, and zero-config setup

basphere/ratatosk-mcp

CNCF release intelligence: typed changes from release notes; check_stack compares versions locally.

tidynest/raven-nest-mcp

AI-driven penetration testing - 22 security tools behind safety-hardened MCP endpoints

tide-foundation/raziel-mcp

MCP server teaching AI agents to implement TideCloak: auth, E2EE, IGA, security analysis

fainir/recall

Read and write Claude Code auto memory from Codex, Cursor or any MCP client. Zero dependencies.

j4ckxyz/recall

Private, encrypted memory about you, shared by all your AI agents. Self-hosted; runs on a Pi.

YawLabs/redis-mcp

Read-first Redis MCP: SCAN key explorer, keyspace/TTL/memory/slowlog stats, DBA advisor

cyanheads/reliefweb-mcp-server

Search ReliefWeb humanitarian reports, disasters, jobs, training, and country profiles via MCP.

LigiaAdam/reloop-role-intel-mcp

Read between the lines of a job ad: real level, inflation, capabilities. Free quick check, no key.

repairworth/repairworth-mcp

Checks US auto repair quote arithmetic and looks up state repair estimate laws. No market price.

DanielGuru/repomemory

Persistent memory for AI coding agents. Hybrid search, auto-session capture, context routing.

aliengineering-byte/resilireplay

Run bounded, deterministic MCP reliability tests and generate executable regressions.

sebs/rewelo

Prioritise a backlog with the relative weight method: score, rank, simulate and plan tickets

The-RFP-Hub/the-rfp-hub

Search Ethereum-ecosystem funding opportunities; submit one behind a human approval step.

cyanheads/ris-austria-mcp-server

Search Austrian federal and state law, court decisions, and the authentic Bundesgesetzblatt (RIS).

SRock44/rmbr

Embedded, local-first memory and retrieval for AI agents. One SQLite file, no server, no API key.

lantean-code/roslyn-workbench-mcp

Bring Visual Studio-style C# fixes and refactorings to your AI agent with local Roslyn Code Actions.

rubrikinc/rubrik-mcp

Connect AI assistants to the Rubrik Security Cloud GraphQL API to discover, query, and automate.

waanvar/samong

Search your own Markdown notes, including languages written without spaces between words.

matematicsolutions/mcp-saos

MCP server for Polish court judgments via the SAOS API with verifiable citations.

pvliesdonk/scholar-mcp

FastMCP server for scholarly papers, patents, books and standards with docling PDF conversion

335/scouter-mcp

Query Scouter APM (objects, counters, XLog transactions) over stdio via a Scouter collector.

SemanticDataCharter/sdcgovernance

Governance validation for Semantic Data Charter instances; returns OASIS XACML decisions.

hoon1983/seismic-mcp

Unified earthquake data from 20 global seismic agencies, with cross-agency report reconciliation.

DmytroMitin/scala-semantic-harness

Bounded Scala compiler, build, test, type, effect, symbol, and SemanticDB evidence for agents.

ahmeedgamil/semhood

AST-based semantic code search; results ship with their call graph (calls + callers).

Rishav0123/sentimatix

Real-time NSE/BSE stock sentiment, news NLP, technical analysis & RAG search via MCP.

Musaraf-M/sentinal

Redis health, BullMQ queue monitoring, memory analysis, and slow query diagnostics