Free MCP servers · page 123

domondi1/inferrail

Local, payload-free AI cost visibility for agents. Track spend by model, route, customer, or tagged work without storing prompt or response bodies.

igorolv/jdbc-mcp-server

Read-only access to PostgreSQL, Oracle and SQL Server via JDBC: schema discovery, query validation, execution plans, benchmarking and index analysis.

Jidoseal/jidoseal-mcp

Checks a folder of Markdown docs for missing Open Knowledge Format (OKF) frontmatter fields, locally; writes only .jidoseal/ in that folder. MCP server Apache-2.0, scan engine proprietary; no network use during a scan is a vendor claim.

denizgursoy/kafka-mcp

Debug Apache Kafka: find messages by key or field, measure consumer lag and when it clears, unblock stuck consumers and compare clusters. Read-only endpoints and a preview before every write.

dockndevai/mcp-kafka

Monitor and manage Apache Kafka clusters, topics and consumer groups (including lag), with access modes, topic allowlists and delete gating.

kansei-link/kansei-mcp-server

Local-first navigator with verified data on SaaS services and workflow recipes.

drexthealpha/Knos

Local memory shared by all coding agents on a machine, built from sessions, commits, CLAUDE.md/AGENTS.md and ADRs, with claims that lock in-progress work.

lagaam-ai/lagaam

Read-only Trino and Apache Pinot access for agents: every query is priced from the engine's own plan before it runs and refused if it's over budget.

linklore/linklore-mcp

Structured memory for coding agents: typed lore and doc entries with status and links that agents read and write.

zuneracodes/localkeep

Local-first chronological memory: write dated, editable memory banks in a local UI, and Claude recalls them on demand via SQLite FTS5.

chaoz23/loudcheck

Check media file loudness against EBU R128 and ATSC A/85: pass/fail verdicts with per-metric deltas, spec citations and ffmpeg remediation commands.

srmadscience/mcpdbwizard-open

Generate a Java MCP server exposing only selected Oracle PL/SQL packages, tables, sequences and SQL statements as typed tools, with no generic SQL tool.

ishay60/mcpolyglot

One server for Postgres, MySQL, SQLite, MongoDB and OpenAPI REST APIs. Every query is checked against a per-table policy, connections are read-only at the database level, results are redacted, and every call is audited per agent.

BeBraveBeKind/mcpskills-server

Scores MCP servers, AI skills and npm packages before install, scanning for prompt injection, credential theft and supply-chain risk, with a go/no-go gate.

japlete/md-vision-mcp

Read Markdown with inlined images and heading indexes for agentic RAG over local docs or allowed URLs.

ayushagrawal288/memex

Persistent agent memory with semantic search and recency decay, local ONNX embeddings, background summarization and Prometheus/Grafana observability.

us-all/mlflow-mcp-server

MLflow experiments, runs, registered models, model versions, traces and assessments, with MLflow 3 GenAI trace support and workflow prompts.

none298-dotcom/mylinedchart-mcp-chart-context

Local, read-only access to live MyLinedChart desktop chart context: symbol, candles, drawings, indicators and IBKR status.

Monyeah777/NinFenz

Content contract layer as a read-only MCP server: protocol specs, modules, pipelines, assets, and the knowledge library for long-form content; 12 read-only tools plus an assembly prompt, Python stdlib only, no write paths.

mikusnuz/npm-mcp

npm package management: publish, version, search, audit, install and more.

dockndevai/mcp-oci

Read-only Oracle Cloud (OCI) resource discovery, dependency mapping and reproducible Terraform generation, with secret redaction.

polymatx/opsgate

Safety gate between AI agents and your servers: 25 typed tools (services, logs, Docker, disk, ports, files, nginx) that build their own argv, so the agent never passes a command string. Deny-by-default observe / operate / full modes per host, human approval for every change via MCP elicitation, and a hash-chained audit log that also records refusals. Local or over SSH with known_hosts verification.

getdomovoi/osnova

Deterministic code map for AI coding agents: a tree-sitter symbol and call graph with exact file:line callers and callees, the evidence behind each edge, diff impact and test discovery across 20 languages.

Rheopyrin/ox-mcp

Email (IMAP/SMTP), Sieve mail filters, CalDAV calendars, CardDAV contacts and free/busy scheduling for Open-Xchange and standards-based mail platforms.

sebastienrousseau/pacs008-mcp

Generate, validate and parse ISO 20022 pacs.008, pacs.004 and pacs.002 messages, repair structured addresses and convert SWIFT MT103 to pacs.008.

dockndevai/mcp-percona-pg

Manage Percona Operator for PostgreSQL clusters: PgBouncer pooling, tuning, backups and PITR, DR and major upgrades, with gated destructive actions.

kaaustubh/project-memory-mcp

Persistent memory for coding agents in plain repo files (AGENTS.md, issues.jsonl): captures bugs, fixes, decisions and corrections and recalls them later.

chrbailey/promptspeak-mcp-server

Pre-execution governance for agent tool calls: risk classification, behavioral drift detection, a hold queue for dangerous operations and an audit trail.

jaimenbell/rag-mcp

Minimal local RAG that vector-searches a document corpus and returns cited passages.

uchit/mcp-regulated-ai-compliance

Regulated-industry AI compliance knowledge: control lookup, use-case classification and crosswalks for EU AI Act, NIST AI RMF, ISO 42001, APRA, GDPR and more.

yubinkim444/repo-memory

Shared, git-tracked memory for AI agents on the same codebase: facts, decisions and gotchas stored in a committed repo directory and synced via git.

andypgray/resharper-cli-mcp

ReSharper solution-wide inspections and code cleanup for C# solutions via JetBrains' command-line tools, without an IDE. Unofficial.

mrnh/rigor

Classical hypothesis testing, effect sizes, power and sample-size analysis and multiple-comparisons correction, returned as cited, assumption-checked answers.

Swih/ritoko

Save browser, HTTP API and MCP workflows as JSON, then replay CSV/XLSX batches with explicit result checks and a local journal for crash recovery.

robotel-limited/robo-cortex

Git-aware memory store for coding agents: memories anchored to git blob hashes are flagged for review when the linked code changes.

Easton-OU/rootpilot-mcp

Read-only SSH diagnostics for Linux and Docker servers using a fixed command allowlist, with secret redaction and per-command timeouts.

markmircea/Selenix-MCP-Server

Create, run, debug and manage Selenix browser automation tests through natural language.

JayOfemi/shikamaru

Deterministic day-count and accrued-interest calculations using ISDA and ICMA conventions.

mishan/shotbox

Runs real GUI programs in a sealed X11 or Wayland session where an agent can read the accessible tree, take screenshots and clips with sound, click, type and drive gamepads, then check what it finds: unnamed controls, contrast, Tab order, screen reader announcements and audio dropouts.

bgaze/snapstack-server

One-click browser-tab screenshots, captured by a companion extension and served locally to the model on demand.

abhishekash/spanhound

Inspect local JSONL and OTLP JSON agent traces through MCP: failures, approvals, token usage, and run comparisons. uvx spanhound

XavierFabregat/spotify-mcp

Conversational Spotify control: play by description and manage the queue, devices, playlists and library, with a guided setup wizard.

06ketan/substack-ops

Manage Substack posts, notes, comments, replies, reactions and restacks, with a propose-then-confirm reply flow, audit log and dry-run by default.

saxonnicholls/super-log

Read-only access to a local dev bench that interleaves every log stream on one timeline: tail and search live streams, search the on-disk journal, wait for an event, and read per-topic guides for unfamiliar topics. No API key, no daemon of its own, npx -y @super-log/mcp.

tactual-dev/tactual

Screen-reader navigation cost analyzer that models assistive technology user effort with per-profile scoring, graph-based pathfinding and navigation traces.

socraticsurge/telugu-calendar-utilities

Telugu Panchangam (Hindu almanac): tithi, nakshatra, muhurta windows, festivals, good-day finder, gochara transits and daily rasi phalalu.

RajeevSirohi/mcp-server-terraform

Terraform operations with two-step confirmation for plan/apply/destroy, plan risk and cost analysis, drift detection, import/taint/refresh and audit logging.

gregario/tft-oracle

Teamfight Tactics reference for champions, traits, items and augments using CommunityDragon data: synergy lookups, item recipes and rolling odds.