MCP connectors for Claude

GraphQL Agent

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Ask SubQuery is an AI-powered GraphQL Agent for exploring SubQuery projects and Subgraphs.

• Graphql Agent: Ask questions about provided graphql project

graphql-dos-shield

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Cloudflare Workers MCP server: graphql-dos-shield

GraphQL operation count, query discarded

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GraphQL operation count, query discarded

graphql-rest-bridge

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Cloudflare Workers MCP server: graphql-rest-bridge

GraphQL SDL definition count, body discarded

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GraphQL SDL definition count, body discarded

Find agent-ready data packets and check their rights, provenance and hashes before you use them.

graviti

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Verified brand claims with receipts for agent commerce.

gread

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An MCP server that gives your AI access to the source code and docs of all public github repos

Gread

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Gives your AI access to the source code of all public github repos.

• Search Repos: Search for GitHub repositories by name, description, or topic keywords using the GitHub Search API.
• View Repo: View repository basic information and its directory structure. Includes corresponding documentation repo if available.
• List Tree: List the directory tree of a specific path in a repository with customizable depth and traversal limits.

Shared memory and actions for Claude, Kiro, OpenAI, Cursor, and other MCP-compatible AI clients.

Great Question

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Great Question is the Agentic UX research platform for product builders.

• Add Interview Study Moderator: Add a new interview study moderator. Add a user to an interview as a moderator, collaborator, or observer.
• Add Interview Study Participant: Add a new interview study participant. Add existing candidates to an interview as shortlisted participants. Skips candidates already in the study, inaccessible to the
• Add Interview Study Screener Question: Add a new interview study screener question. Does not replace existing questions on the screener.

GreatArrow.ai

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An AI memory and context layer that lets users carry shared memory and actions across the AI tools they already use.

• Memory Search: PROACTIVE: call before answering any prompt referencing prior work, projects, files, decisions, people, or tickets. Semantic search across all four memory layers; hits include `url`/`fi
• Memory List: List recent memories (titles + content previews), optionally filtered by layer and/or tag. Use memory_get for a memory's full content.
• Memory Get: Fetch a single memory by id.

greece-invoice

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Let AI agents report Greek invoices to myDATA (AADE).

• Create Invoice: Issue a Greek electronic invoice (τιμολόγιο) into the national AADE myDATA platform. Builds an AadeBookInvoiceType <InvoicesDoc> XML and transmits it to /SendInvoices under your own AA
• Query Invoice: Look up one of your own transmitted myDATA documents by its MARK. Calls /RequestTransmittedDocs, which returns your transmitted docs with a MARK greater than the value you pass — so thi

Greece Invoices (AADE myDATA national API)

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Greece myDATA invoices for AI agents: build AADE XML, transmit to myDATA, query by MARK.

Greece Payments (Stripe — cards / Apple Pay)

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Greece payments for AI agents — cards / Apple Pay via Stripe.

Greek Insurance Registry

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Locate and verify insurance intermediaries registered in Greece using various search parameters.

• Search Intermediaries: Search Greek insurance intermediaries by query and filters (name, VAT, GEMI, categories, license status, legal type, etc.)
• Get Intermediary By Vat: Get a single insurance intermediary by VAT number (9 digits)
• Get Intermediary By Gemi: Get a single insurance intermediary by GEMI registration number

Green API WhatsApp

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MCP gateway for WhatsApp via Green API: messaging, contacts, groups and instance management.

Green Gooding

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Read-only catalog for Green Gooding — NYC peer-to-peer rental marketplace.

green-router

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Carbon-accounted agent compute: free footprints; certificates backed by real offset retirement.

green-router

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Pay your agent's entropy bill: free honest energy/carbon footprints (Landauer-grounded, assumptions stated), free carbon-ranked routing, and $0.50…

• Quote Footprint: FREE: honest energy/carbon footprint for an agent workload — {backend_id? (frontier_cloud | efficient_cloud | local_small), total_tokens, output_tokens, calls?, success_score?, grid_g
• Green Route: FREE: rank compute backends by carbon for this workload — the greenest eligible path and the gCO2e saved per call. Carbon only (GR6); pair with /neurogenesis/mcp route_task for quality-fl
• Certify: PAID ($0.50 after free tier): compute the workload footprint, then RETIRE the required verified offset mass through the fleet's own clearinghouse — Verra provenance rides into the certificate

GreenCalculus

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Look up greenhouse-gas emission factors and run standards-based carbon calculations (activity-based, embodied EN 15978, PCAF financed emissions) — every…

• Lookup Factor: Look up a single greenhouse-gas emission factor by its canonical key and get the value with full provenance (source id, exact source cell, data version). Use search_factors first if you
• Search Factors: Find emission-factor keys by section, key prefix, or free text. Returns matching keys, names, and sections (values are redacted here — call lookup_factor for the value).
• Calculate Activity: Turn activity data into greenhouse-gas emissions: emissions = activity × factor. Give an amount + unit and a factor key; the unit engine converts to the factor basis (MWh→kWh, tonn

Greenhouse

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Greenhouse MCP Pack — wraps the Greenhouse Harvest API v1

Scrape job listings from companies using Greenhouse ATS via a fast API.

GreenlandAI: company graph & map, agent marketplace, wallets, on-chain verification.

US plug-in solar (balcony solar) law registry with a daily UL 3700 certification watch.

Greenlit Books

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Search the Greenlit AI books, read any chapter one free, and look up the terms they define.

Greenspark - Support Nature Based Solutions (Plant trees, Offset CO2 & more)

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Greenspark MCP lets AI builders and agents easily add verified impact actions, such as planting trees, recovering ocean-bound plastic, protecting bees…

• List Endpoints: Lists all API paths and their HTTP methods with summaries, organized by path. Results can be passed directly into 'get-endpoint'.
• Get Endpoint: Gets detailed information about a specific API endpoint, including security schemes and servers
• Search Endpoints: Performs a deep search through paths, operations, and parameters to discover relevant API endpoints. Use this tool to find specific API capabilities, required parameters, or data mod

Greeting & Utilities

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Send friendly greetings in multiple languages, run quick calculations, and get the current time for any timezone.

• Greeting: Friendly greeting tool that can greet users in various languages
• Add: Addition calculator that adds two numbers
• Subtract: Subtraction calculator that subtracts second number from first number

GrelfSwap

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Trade tokens and manage assets on the Hedera network through direct integration with SaucerSwap and MemeJob.

• Get Status: GET /status — Check GrelfSwap API availability. Returns supported features, contract addresses, and SDK link. No wallet needed.
• Get Prices: GET /prices — Get current USD prices for one or more Hedera tokens. No wallet needed.
• Get Quote: GET /quote — Preview a swap quote before executing. Shows expected output, price impact, route, and fees. No wallet needed (wallet optional for prerequisite checks).

Greynoise

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GreyNoise Community MCP — internet scanner classification (free tier with key)