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PopNx MCPMCP servers for people who use AI · explained in plain words

CoreSpeed

by corespeed-ioversion 1.0.0i★ –iRuns in the cloud
Registry nameio.corespeed/mcp

Install

Overview

Description from the maker (original English)

One MCP for any agent: your connected apps, shared memory, web search, social data and media tools.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Runs in the cloud
  • Transport: Streamable HTTP
  • Category: Search & AI memory

Install

Pick the AI app you use, then copy the settings.

Before you install

  • Basic checks: 3 of 3 passed
  • Runs on the maker’s server: what you ask it goes through their server.
  • The registry lists no key to fill in.

You need

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://api.corespeed.io/mcp

Run this in your terminal

claude mcp add --transport http corespeed https://api.corespeed.io/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "corespeed": {
      "url": "https://api.corespeed.io/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "corespeed": {
      "type": "http",
      "url": "https://api.corespeed.io/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://api.corespeed.io/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

The server asks you to sign in before it lists its tools.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified against the domain corespeed.io (the registry checks domain ownership)

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • ✓ Pass

    Endpoint responds

    Responded in 1034 ms (HTTP 401)

  • ✓ Pass

    Sign-in with OAuth

    Declares OAuth sign-in, so your AI app can take you to log in

  • … Not checked yet

    No hidden instructions in tool descriptions

    Not checked yet; we read the tool list when we check the endpoint

Compared with others in Search & AI memoryi

  • More stars than 0% of the other 7251 servers in this category
  • Published to the registry more recently than 89% of the other 7251 servers in this category
  • Basic checks equal to or better than 100% of the other 7251 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is CoreSpeed safe?

It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 4 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Context7, Codebase Memory, Exa

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Context7

by upstash

Feeds AI the latest docs for libraries and frameworks before it answers, so code it writes does not use outdated, removed functions.

Computer or cloud★ 64,224MITUpdated today
Install

Codebase Memory

by DeusData

Codebase knowledge graph for AI agents — 162 languages, sub-ms queries, 99% fewer tokens.

Runs on your computer★ 48,148MITUpdated 20 days ago
Install

Exa

by exa-labs

Connect AI agents to Exa for web search, content fetching, and multi-step research.

Runs in the cloud★ 5,213MITUpdated last month
Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

CoreSpeed for coding agents

CoreSpeed gives an agent one MCP server, https://api.corespeed.io/mcp, that carries the tools of every app your organization has connected (Notion, Slack, GitHub, X, Linear, and more), long-term memory shared across agents, a Drive every tool reads and writes, media generation and understanding, live web search, and public social data, all billed to one wallet with spend caps and an audit trail.

This repository holds the CoreSpeed plugin for Claude Code, Codex and Cursor, and the agent skills it bundles. The cs command-line tool is published to npm as @corespeed/cs.

Claude Code

claude plugin marketplace add corespeed-io/cs

claude plugin install corespeed@corespeed

Inside Claude Code the same is /plugin marketplace add corespeed-io/cs, then /plugin install corespeed@corespeed. Start a new session, run /mcp, pick the CoreSpeed server, and authenticate in the browser.

Codex

codex plugin marketplace add corespeed-io/cs

codex plugin add corespeed@corespeed

Start a new Codex task. When CoreSpeed shows Authentication required, select Authenticate (or open Settings → MCP servers → CoreSpeed) and finish the sign-in in the browser. In the ChatGPT desktop app the plugin appears under the CoreSpeed marketplace once it has been added.

Codex installs the self-contained plugins/corespeed-directory/ package. It uses https://api.corespeed.io/mcp/plugin/chatgpt: nine memory operations, current identity and completion of memory write approvals. Its corespeed-memory skill guides recall, saving, correction, memory links and deletion. New memories are private unless you ask to share them. This is the package prepared for OpenAI Directory review; it contains no general CLI or HTTP API skill and does not operate connected apps or files. It requires the narrowed memory contract to be deployed before installation or submission. It keeps the same MCP URL already configured for the plugin; there is no server-address migration.

Claude Code keeps the full server and the CLI/API skills in plugins/corespeed/. Cursor uses that package with the same memory-only plugin endpoint, plus the broader CLI/API skills. Codex has one manifest, in plugins/corespeed-directory/.

Codex, CLI only

codex plugin marketplace add corespeed-io/cs

codex plugin add corespeed-cli@corespeed

This plugin registers no MCP server. Its cs-cli skill has the agent install the cs command-line tool, sign in once in the browser, and then find and call CoreSpeed tools from the shell (cs mcp search, cs mcp get, cs mcp call), and move files in and out of the organization's Drive (cs drive put, cs drive get). Pick it when Codex cannot load your organization's full tool list, or when you want every call to go through the shell. It remains available separately from the repository marketplace. It is not part of the Directory memory package, and its availability here is not an OpenAI approval.

Cursor and Grok Bot

In Cursor, open Customize, search the Marketplace for CoreSpeed, and install it. Pick the CoreSpeed MCP server and sign in in the browser when Cursor asks. Grok Bot loads plugins from the Cursor Marketplace, so the same plugin works there.

Cursor reads the legacy package's root .mcp.json, so its server is the plugin surface https://api.corespeed.io/mcp/plugin/chatgpt: the same eleven memory, identity and approval operations as the Directory package. A connected app's tools and the organization's Drive are reached through the bundled cs-cli skill (cs mcp call, cs drive).

To try this repository before a Marketplace release, copy plugins/corespeed to ~/.cursor/plugins/local/corespeed and reload the window.

The cs CLI

npm install -g @corespeed/cs

cs login

cs signs you in through the browser, mints sk-cs- API keys for CI, switches organizations, connects apps, and calls tools from a terminal. See the CLI docs.

What the plugins contain

PluginPartWhat it does
Codex corespeed (plugins/corespeed-directory/)MCP and corespeed-memory skillEleven individually exposed memory, identity and approval operations; no app connections, files or generic executor.
Claude/Cursor corespeed (plugins/corespeed/)MCP serverBrowser sign-in (OAuth 2.1 + PKCE), never a pasted key. Claude Code: the full https://api.corespeed.io/mcp. Cursor: the plugin surface https://api.corespeed.io/mcp/plugin/chatgpt (memory, identity and approvals).
Claude/Cursor corespeedcs-cli skillUsing the cs CLI: sign-in, finding and calling tools from a shell, memory, files in the Drive, API keys, organizations, connectors, remote MCP servers, credit.
Claude/Cursor corespeedcs-api skillCalling CoreSpeed over HTTP from code and CI: credentials, tools/list and tools/call, error codes, credits.
corespeed-clics-cli skillThe same skill, and nothing else: no MCP server is registered.

The public Directory upload is only `plugins/corespeed-directory/`, with the manifest at its root under .codex-plugin/. Do not upload this entire repository or the legacy plugins/corespeed/ package. Run python3 scripts/check-directory.py before packaging. CI checks the exact file inventory so a broader skill cannot enter the upload accidentally.

Standalone CLI installation remains your choice, using npm or the separate corespeed-cli plugin above. The memory plugin neither requires nor installs it and does not use it to complete an unavailable or denied operation. CLI sign-in is separate; plugin credentials are not copied.

If you added CoreSpeed to your client by hand earlier (claude mcp add, codex mcp add, or an entry in Cursor's mcp.json), remove that entry before installing the plugin, so every tool is registered once.

Sign-in happens at login.corespeed.io, and the plugins' only servers are https://api.corespeed.io/mcp and https://api.corespeed.io/mcp/plugin/chatgpt. Anything else claiming to be CoreSpeed is not this plugin.

Other clients

Copilot in VS Code, Claude.ai, ChatGPT, and any client that speaks Streamable HTTP with MCP authorization connect with the URL alone. Per-client setup is at https://corespeed.io/docs/mcp.

Links

  • Docs: https://corespeed.io/docs
  • Dashboard: https://app.corespeed.io
  • Pricing: https://corespeed.io/pricing
  • Support: support@corespeed.io
  • Security reports: see SECURITY.md

License

Apache-2.0

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