MCP connectors for ChatGPT

guide-registry

Online

Community: Submitted by a user or imported; check the owner before granting access

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine.

guide-registry

Online

Community: Submitted by a user or imported; check the owner before granting access

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine.

guide-registry

Online

Community: Submitted by a user or imported; check the owner before granting access

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine.

guide-registry

Online

Community: Submitted by a user or imported; check the owner before granting access

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine.

guide-registry

Online

Community: Submitted by a user or imported; check the owner before granting access

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine.

guide-registry

Online

Community: Submitted by a user or imported; check the owner before granting access

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine.

guide-registry

Online

Community: Submitted by a user or imported; check the owner before granting access

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine.

guide-registry

Online

Community: Submitted by a user or imported; check the owner before granting access

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine.

guide-registry

Online

Community: Submitted by a user or imported; check the owner before granting access

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine.

guide-registry

Online

Community: Submitted by a user or imported; check the owner before granting access

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine.

Guidetopharmacology

Online

Community: Submitted by a user or imported; check the owner before granting access

IUPHAR/BPS Guide to PHARMACOLOGY (GtoPdb) MCP — keyless.

guif

Online

Community: Submitted by a user or imported; check the owner before granting access

GBIF MCP — wraps the Global Biodiversity Information Facility API v1 (free, no auth)

Guild Wars 1 Build Compiler

Online

Community: Submitted by a user or imported; check the owner before granting access

GW1 build compiler: skill data, template code encode/decode, validation, hero roster.

Guild Wars 2

Online

Community: Submitted by a user or imported; check the owner before granting access

Guild Wars 2 keyless public endpoints (worlds, items, achievements, build, commerce).

Guitar Practice Routine App — Chord Charts

Online

Community: Submitted by a user or imported; check the owner before granting access

Look up a guitar chord by name and get a text chord diagram.

🐴 Gulltoppr

Online

Community: Submitted by a user or imported; check the owner before granting access

Resolve any EVM contract ABI (even unverified, via decompilation), read, simulate, prepare txs.

Gunbroker

Online

Community: Submitted by a user or imported; check the owner before granting access

GunBroker MCP Pack — wraps the GunBroker firearms-marketplace API.

Guru Remote MCP Server

Online

Community: Submitted by a user or imported; check the owner before granting access

Guru MCP Server - Connect AI tools to your Guru knowledge base

Gurufocus

Online

Community: Submitted by a user or imported; check the owner before granting access

GuruFocus MCP — wraps the GuruFocus Data API (gurufocus.com/data-api)

GuruWalk Affiliates

Online

Community: Submitted by a user or imported; check the owner before granting access

GuruWalk affiliate program for AI agents.

gutenberg-mcp-server

Online

Community: Submitted by a user or imported; check the owner before granting access

MCP server for Project Gutenberg — 75,000+ public-domain ebooks with full plain-text retrieval.

gutendex

Online

Community: Submitted by a user or imported; check the owner before granting access

Gutendex MCP — wraps Gutendex API for Project Gutenberg books (free, no auth)

GUTHMANN® Berlin Real Estate

Online

Community: Submitted by a user or imported; check the owner before granting access

Berlin real estate for AI agents: granular market data and property search, free, by GUTHMANN®.

guzu

Online

Community: Submitted by a user or imported; check the owner before granting access

Guzu tracks your brand's visibility across AI platforms — ChatGPT, Perplexity, Gemini, and Google AI Overviews.

• Get Visibility Score: Get a brand's AI Visibility Score — how visible the brand is across AI platforms (ChatGPT, Perplexity, Gemini, AI Overview). Returns the AI Visibility Index, total citations and
• Get Results By Prompt: Get the brand's AI-visibility results broken down by individual prompt (the tracked queries), plus performance grouped by category. Use this to answer "which specific prompts/qu
• Compare Competitors: Compare the brand's AI visibility against its tracked competitors. Returns the competitor ranking (where the brand sits vs. rivals), overall market position, radar metrics, and pl

Gvnr

Online

Community: Submitted by a user or imported; check the owner before granting access

Budget & cost control for AI agents — per-agent spend caps + rate limits before each call.

Gwas Catalog

Online

Community: Submitted by a user or imported; check the owner before granting access

GWAS Catalog (EBI/NHGRI) MCP — curated catalog of genome-wide association studies.

gyibb-mcp

Online

Community: Submitted by a user or imported; check the owner before granting access

Cited product-review verdicts from real user voices — free remote MCP, no API key.

H1b

Online

Community: Submitted by a user or imported; check the owner before granting access

US H-1B visa sponsorship, LCA wages & top sponsors by role — recruiting/talent data

Hacé Cuentas — Free Calculators

Degraded

Community: Submitted by a user or imported; check the owner before granting access

Free calculators as MCP tools: finance, taxes, health, units, dates.

Hacker Bob public records

Online

Community: Submitted by a user or imported; check the owner before granting access

Read-only public CVE records, capability metadata, and agent instructions from Hacker Bob.