MCP Server Directory

Align-Software-Company/opensolar-mcp

Unofficial, self-hosted MCP server for the documented OpenSolar API.

CloudCorpRecords/opensourceit

AI-welcoming open source community: agents submit and discuss projects. No AI ban.

pipeworx-io/mcp-openstates

OpenStates MCP — bills, legislators, votes in all 50 US states

cammac-creator/openswissdata

Swiss customs tariff (TARES), FINMA register, NOGA/NACE/ISIC codes. 3 free tools + search trial.

pipeworx-io/mcp-opentargets

Open Targets MCP — disease/target/drug knowledge graph.

io.github.Invaro/opentax

Verifiable US tax oracle for AI agents: cited, machine-checkable federal and state tax computation

OpenTrain-AI/OpenTrain-Platform-Monorepo

Hire human data labelers, RLHF annotators, and evaluators from your coding agent.

pipeworx-io/mcp-opentripmap

OpenTripMap MCP — wraps the OpenTripMap Places API (dev.opentripmap.org)

opentweetio/mcp-server

Manage your Twitter/X presence from any AI assistant — schedule, threads, and more

xiaojiou176-open/OpenVibeCoding

Read-only MCP for OpenVibeCoding runs, workflows, proof, queue, replay, and incident reads.

pipeworx-io/mcp-openweather

OpenWeather MCP — wraps the OpenWeatherMap API (openweathermap.org)

davidlg/openwebhook

Inspect webhooks from Cursor or Claude. No account needed. Pro adds permanent slugs.

ArchieAngelBeWithUs-prog/operandi-mcp

Grounded, safety-checked appliance operation packages for robots and agents. Zero-config trial.

Openly-Useful/operations-pulse

Local-first operational pulses, durable ticket memory, and governed connection discovery.

Ophir-Protocol/ophir

Ophir protocol tools for AI agent discovery, negotiation, and settlement

itunified-io/mcp-opnsense

OPNsense MCP Server — 72 tools for DNS, Firewall, DHCP, ACME, Routing, VLANs & more

OpsMaxx/opsmaxx-mcp

SSH, files, containers and databases via the OpsMaxx desktop app - scoped per capability, audited.

mozarkai/optics-agent-plugins

Drive Android, iOS, smart TV and web apps from an agent; save the steps as CSV/YAML test suites.

jjd-lab/optlens

Debug and explain LP/MILP models: why infeasible, the smallest fix, what-if and sensitivity.

pipeworx-io/mcp-oqmd

OQMD (Open Quantum Materials Database) MCP.

mike-boodoo/oqos-connector

Base OQOS MCP server for chatbot discovery and future OQOS capabilities.

pipeworx-io/mcp-or-dmv

Oregon DMV MCP — live wait times at all 60 Oregon DMV field offices, plus the office locator the…

bdog720/oraclarr

Read-only-by-default MCP server for diagnosing a self-hosted arr stack (Sonarr, Radarr & more).

rileybuilds/oracle-feeds-mcp

On-chain price oracles: Chainlink (5 chains) + Pyth, staleness-flagged, no forced RPC key.

StudiousXiaoYu/oracle-link

Oracle MCP Query Server (Node.js) - Read-only SELECT via MCP

bluegemsk/oracle-mcp-lite

Offline Oracle AWR/ASH report analyzer with DBA tuning advice and a top-3 tuning summary.

KimHyeongRae0/orangerail

Turns your Prisma schema into typed MCP tools, with destructive writes gated behind human approval

OrchestraPrime/mcp-server

Regulatory intelligence (FDA, ICH, EMA) and sanctions screening (OFAC, EU, UK) for Claude

wundam/orchex

Autopilot AI orchestration — auto-plan, parallelize, self-heal, and route across 6 LLMs.

orchynX/mcp

Social intelligence for 8 networks: read posts, creators and trends, then create from them.

SMABoundless/orcid-mcp-server

Search ORCID researcher profiles, retrieve works, and export citations

pipeworx-io/mcp-orcid

ORCID MCP — public records.

ralfbecher/orionbelt-analytics

Ontology-based MCP server for database schema analysis and RDF/OWL ontology generation

ralfbecher/orionbelt-semantic-layer

API-first semantic layer MCP server compiling YAML models into dialect-specific SQL

Alkilo-do/orita-mcp

Provider resolution for AI apps — search, rank, hold, confirm bookings across your provider network.

cheetah-trade/orla-cli

Personal, family and business books over fiat and crypto. Reads and records; it cannot pay.

sikandar100/orm-preflight

Checks TypeORM migrations for data loss, table locks, and deploy problems before they run.

Orphograph/Orphograph

Anchor a file's SHA-256 fingerprint to Bitcoin. The file never leaves the device.

orsf-sk/orsf

1.25M+ Slovak companies, aggregated from 8 registers (RPO/ORSR/RÚZ/ZRSR/RPVS/CRZ/ÚVO/FS DPH).

emiledelarey/oryx-portal

Client editing for sites you built: register, scan, publish, go live, invite the client.

dfkunstler/mcp-server-for-oscal

AI agent tools for Open Security Controls Assessment Language (OSCAL)

0xmortuex/osdev-wiki-mcp

The OSDev wiki (wiki.osdev.org) offline and searchable: search, sections, links.

pipeworx-io/mcp-osf

OSF (Open Science Framework, by the Center for Open Science) MCP. Keyless public-data API…

io.github.onefreeman1337/osf-data-marketplace

8.1M+ US gov and science data via x402 USDC. 21 tools, $0.001 sample tier, sanctions, SEC, CVEs.

pipeworx-io/mcp-osha

OSHA MCP — US workplace-safety standards (29 CFR Chapter XVII, parts 1900–1990) AND OSHA…

robyroro/osint-mcp

Domain and website investigations: batch recon, shared infrastructure, CT history and public lookups

osintsx/osintsx-mcp

Search an email, phone, username or name across every OSINT.SX source, plus account history tools.

gander-tools/osm-tagging-schema-mcp

MCP server for querying and validating OpenStreetMap tags