MCP connectors for ChatGPT

Pre-execution governance for AI agents.

GP Intel

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Verified European private equity ownership data: who owns a company, PE firm portfolios, exits by year.

• Who Owns: Find who owns a company: its current private equity owner(s) and the full ownership history (entry years, exits with year and route). Covers 21,000+ companies held by European PE firms, hand
• Gp Portfolio: List the portfolio companies of a private equity firm (GP), optionally filtered to active holdings or exited positions. Returns company, sector, geography, entry year, exit year/type, fu
• Gp Exits: List the exits (realised divestments) of a private equity firm, optionally for a specific year. The query AI search cannot answer reliably: 'what did GP X sell in YEAR'. Returns company, exi

GPT-4o: GPT-4o (“o” for “omni”) is our versatile, high-intelligence flagship model.

GPT-5: GPT‑5 is OpenAI’s most advanced and unified AI model, combining fast, real-time.

Authenticated async GPT-5.6-luna Agent agent with status polling and artifact results.

Authenticated async GPT-5.6-sol Agent agent with status polling and artifact results.

GPTHuman

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A MCP server providing access to GPTHuman's API, the leading platform for rewriting AI-generated text into more natural, human-sounding prose, with…

• Humanize Text: Transforms AI-generated text into a more natural, human-sounding variant while preserving the requested tone and rewrite mode. Input must be at least 300 characters and must not exceed

gpu-cost-estimator-enverge

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Enverge.ai Cost Estimator compares published GPU hourly rates for a workload—fine-tunes, training, or inference—and recommends a tier.

• List Skus: List Enverge GPU tiers from the pricing catalogue, with hourly rates and access type (self_serve vs request_capacity). Use before comparing clouds or recommending a rental.
• Estimate Job Cost: Estimate on-demand cost for a GPU job across Enverge tiers (e.g. DGX Spark vs B300) using the pricing catalogue. Pass hours, or a workload preset for an illustrative default. Always

Save and organize web finds in persistent, user-controlled collections for AI assistants.

Gracie Barra Jiu-Jitsu — directory of martial arts schools, classes, instructors, ranks, and events.

Honest A-F grades for trading strategies, backtested on real out-of-sample data.

Live MCP catalog for Graffeo Coffee Roasting - Simply the World's Finest Coffee since 1935.

Benjamin Graham's fair-value ceiling and margin of safety for a US-listed ticker.

Find federal and public grants a business may qualify for, with eligibility and links.

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

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

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

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.

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

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

GribStream.com Historical Weather Forecast API

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GribStream MCP is a Model Context Protocol server for weather forecast data.

• Gribstream Query Timeseries: AUTH REQUIRED / DATA QUERY. Executes an authenticated /api/v2/{dataset}/timeseries request and returns actual weather/forecast data values. Use this tool, not the NO AUTH
• Gribstream Query Runs: AUTH REQUIRED / DATA QUERY. Executes an authenticated /api/v2/{dataset}/runs request and returns actual weather/forecast data values across model runs. Use this tool, not the NO
• Gribstream List Datasets: NO AUTH / PUBLIC / READ-ONLY. Lists public GribStream datasets and metadata. This tool does not query weather values and cannot return forecast data. Supports catalog filters

Austrian energy data: 119 electricity tariffs daily, grid fees, subsidies, bill analysis.

gridbert

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Gridbert is a remote MCP server for the Austrian energy market.

• Ingest: Schreibt ein RAW-Artefakt (JSON/Text-Fakten-Submission) in den append-only Raw-Store der Instanz (SSOT). Wird später über compile_next kompiliert.
• Search Pages: Deterministische FTS-Suche über die kompilierten Seiten der Instanz (LLM-frei) — das GEDÄCHTNIS des Haushalts. Hier liegen aus Rechnungen gemerkte Fakten (Jahresverbrauch, Arbeits-/Grund
• Get Page: Liefert eine Seite der Instanz per Key.

Provide a comprehensive spellbook for Dungeons & Dragons 5th Edition to enhance your gameplay experience.

• Search Spells: Search for D&D 5E spells with various filters
• Get Spell: Get detailed information about a specific D&D 5E spell
• List Schools: List all available D&D 5E spell schools

Create, publish and track sales funnels and Sites with custom domains from any MCP agent.

Grok FAF

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Grok asked for MCP on a URL.

• Get Soul: Fetch a context soul by name. Returns structured AI context.
• List Souls: List all available context souls.
• Write Soul: Append an entry to a soul or replace it entirely. Entries can be typed as note, fact, todo, or question.

Groniz MCP

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Managing social media shouldn’t mean jumping between platforms, reconnecting accounts, and rewriting the same post for every channel.

• IntegrationList: This tool list available integrations to schedule posts to. Optionally pass a group id (from the groupList tool) to only list integrations belonging to that group
• GroupList: This tool lists the available groups (customers). Use a group id with the integrationList tool to filter the integrations belonging to that group
• IntegrationSchema: Everytime we want to schedule a social media post, we need to understand the schema of the integration. This tool helps us get the schema of the integration. Sometimes we might get

Nabídka nemovitostí GROO reality — byty, domy a pozemky v Praze a okolí.

Reference data API for classification systems, real-time world data, and unit conversions