Cactus

Name: Cactus
Author: hey-cactus

by hey-cactusversion 1.0.0i★ –iRuns in the cloud

Registry nameai.heycactus/cactus

Install

Overview

Description from the maker (original English)

Search and ask your product's help pages, product map and support conversations in Cactus.

PopNx MCP’s three pillars

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

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

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: 1 of 1 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

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

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

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://mcp.heycactus.ai/mcp

Run this in your terminal

claude mcp add --transport http cactus https://mcp.heycactus.ai/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "cactus": {
      "url": "https://mcp.heycactus.ai/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": {
    "cactus": {
      "type": "http",
      "url": "https://mcp.heycactus.ai/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:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://mcp.heycactus.ai/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

We have not read this server’s tool list yet; we check endpoints in rotation.

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 heycactus.ai (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
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… 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 7250 servers in this category
Published to the registry more recently than 63% of the other 7250 servers in this category
Basic checks equal to or better than 100% of the other 7250 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 Cactus safe?

It passed 1 of 1 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 22 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.

Cactus MCP server

Cactus (heycactus.ai) learns a product from its codebase, answers its customers live, and keeps its help site and changelog current with every release. Its MCP server lets your team reach that knowledge from Claude, ChatGPT, Cursor, VS Code or any other MCP client.

This repository holds no server code. It lists Cactus's hosted MCP server: how to connect, the tools it offers, and the manifests MCP directories read.

Connect

Server: https://mcp.heycactus.ai/mcp
Transport: Streamable HTTP
Sign-in: OAuth 2.0 with your Cactus account (Google or GitHub). Dynamic client registration and client ID metadata documents are supported, with PKCE (S256).

Step-by-step setup for each AI client: https://heycactus.ai/docs/connect-an-ai-client

In Claude Code:

claude mcp add --transport http cactus https://mcp.heycactus.ai/mcp

In Cursor, add this to .cursor/mcp.json:

"mcpServers": { "cactus": { "url": "https://mcp.heycactus.ai/mcp" } } }

You need a Cactus team with a product built from a GitHub repository. Cactus is about to launch; its closed beta started on 16 Oct 2026. Join the waitlist at https://heycactus.ai.

Tools

On https://mcp.heycactus.ai/mcp, signed in:

Tool	What it does
`list_products`	List your team's products
`search_help`	Search the product's published help pages
`read_page`	Read a help page
`list_topics`	List help topics
`read_timeline`	Read the product's dated record of releases
`lookup_map`	Read the product map Cactus keeps from your code
`search_conversations`	Search past customer conversations
`read_conversation`	Read a conversation
`search_evidence`	Search past customer conversations and imported help articles
`search`, `fetch`	Search, and fetch a result
`ask`	Ask Cactus a question. It answers from the published pages, the product map, the product knowledge and past conversations, and cites its sources
`start_investigation`, `get_investigation`	Investigate a question in the product's code and knowledge, and read the finding

Every tool carries MCP annotations. No tool edits or deletes anything. Only ask and start_investigation aren't read-only, because each runs a new answer or investigation.

Public help-center servers

Every product's public help center has its own server, with no sign-in: https://mcp.heycactus.ai/p/ /mcp. Cactus's own help center is https://mcp.heycactus.ai/p/cactus/mcp. It offers search_help, read_page, list_topics, read_timeline, ask_help, contact_team, search and fetch.

ask_help answers the way the help center answers a visitor. It starts from the published help pages and reads the product map, the code index and the code when those fall short. contact_team sends the team a message they can reply to.

Cactus

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Search & AI memoryi

Common questions

Alternatives

Context7

Codebase Memory

Exa

README from the maker

Cactus MCP server

Connect

Tools

Public help-center servers

Links