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

Catalyst Governance

by Stratogenic-AIversion 1.0.1i★ –iRuns in the cloud
Registry nameio.github.Stratogenic-AI/catalyst

Install

Overview

Description from the maker (original English)

Governance middleware for AI agents: permission gates, approvals, compliance scanning, audit ledger.

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, SSE
  • Category: Accounting, finance & tax
  • You need to fill in: X-API-Key

Install

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

Before you install

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Which app do you use?

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

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Run this in your terminal

claude mcp add --transport http catalyst https://catalyst.stratogenic.ai/mcp --header 'X-API-Key: your-value'

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "catalyst": {
      "url": "https://catalyst.stratogenic.ai/mcp",
      "headers": {
        "X-API-Key": "your-value"
      }
    }
  }
}

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": {
    "catalyst": {
      "type": "http",
      "url": "https://catalyst.stratogenic.ai/mcp",
      "headers": {
        "X-API-Key": "your-value"
      }
    }
  }
}

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.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

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

Values you fill in

  • X-API-Key secret required HTTP header
    Your Catalyst API key from catalyst.stratogenic.ai

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 with the GitHub account Stratogenic-AI, which owns the repo

  • … 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 Accounting, finance & taxi

  • More stars than 0% of the other 1726 servers in this category
  • Published to the registry more recently than 16% of the other 1726 servers in this category
  • Basic checks equal to or better than 100% of the other 1726 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 Catalyst Governance 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?

You need to fill in: X-API-Key

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 (1.0.1) reached the registry 5 months 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: Finance Toolkit, SolidInvoice, Korea Tax Calculator

Alternatives

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

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500+ transparent financial methods calculated from raw statements, not third-party endpoints.

Computer or cloud★ 5,496MITUpdated 2 days ago
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SolidInvoice

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Runs in the cloud★ 981MITUpdated 7 days ago
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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.

Catalyst MCP Server

Governance middleware for AI agents — hosted MCP server with both SSE and Streamable HTTP transports.

What it does

Catalyst puts a governance layer between your AI agent and consequential actions. Before your agent writes files, sends messages, deploys code, or calls external APIs, it checks in with Catalyst. Depending on your governance mode, actions are allowed, routed to a human for approval, or denied.

Core features:

  • Pre-execution permission gates with a progressive trust model: observe → advisory → proposal → strict
  • Human-in-the-loop approval flows — agents submit proposals, humans approve/decline
  • Compliance scanning across 8 frameworks: GDPR, SOC 2, ISO 27001, HIPAA, PCI-DSS, EU AI Act, Bribery Act, AML/KYC
  • Hash-linked audit ledger — every agent action is recorded with touched_by.source=mcp
  • Webhook notifications for proposal.accepted / proposal.declined events

Use with Claude Code

Claude Code is a primary use case Catalyst was designed for. Claude Code governs itself session-locally — it asks before running dangerous commands, but those decisions leave no audit trail, survive no context reset, and sit outside your organisation's approval workflows.

Catalyst externalises that governance. Once connected, every consequential action Claude Code attempts is routed through your policy, logged in an immutable ledger, and (if required) held for human approval in the Catalyst dashboard before Claude Code proceeds.

Connect in one command:

claude mcp add catalyst \

--transport sse \ --url https://catalyst.stratogenic.ai/mcp/sse \ --header "X-API-Key: SGC_your_key_here"

Or with Streamable HTTP (Claude Code 0.10+):

claude mcp add catalyst \

--transport http \ --url https://catalyst.stratogenic.ai/mcp \ --header "X-API-Key: SGC_your_key_here"

Claude Code will automatically call catalyst_check_action before destructive operations and catalyst_await_approval when a proposal is required. Every action is ledgered with touched_by.source=mcp — you get a permanent, verifiable record of what your AI coding agent did and when.

What governance looks like in practice:

Claude Code actionCatalyst response (proposal mode)
git push --forceproposal_required — held for approval
rm -rf ./distallow — whitelisted build action
Deploy to productionproposal_required — held for approval
Edit source filesallow — within declared capabilities
Call external APIproposal_required — undeclared capability

Set your governance mode to observe to start with a full audit trail only, advisory to flag deviations without blocking, proposal to require human sign-off on sensitive actions, or strict to allow only explicitly whitelisted capabilities.

Get your API key at catalyst.stratogenic.ai.


Connect

Streamable HTTP (preferred — required by Glama, Smithery, and newer clients):

{

"mcpServers": { "catalyst": { "url": "https://catalyst.stratogenic.ai/mcp", "transport": "http", "headers": { "X-API-Key": " " } } } }

SSE (for clients that don't yet support Streamable HTTP):

{

"mcpServers": { "catalyst": { "url": "https://catalyst.stratogenic.ai/mcp/sse", "transport": "sse", "headers": { "X-API-Key": " " } } } }

Get your API key at catalyst.stratogenic.ai.

Tools

ToolDescription
catalyst_my_governanceShow your governance profile and plan capabilities
catalyst_check_actionCheck if a capability is permitted before acting
catalyst_log_taskRecord a task or action into the governance pipeline
catalyst_pending_approvalsList proposals awaiting human sign-off
catalyst_await_approvalPoll a specific proposal's approval status
catalyst_register_approval_webhookRegister a callback URL for approval events
catalyst_run_compliance_scanRun an automated compliance scan (requires add-on)
catalyst_list_compliance_frameworksList available compliance frameworks
catalyst_get_dashboardGet the governance dashboard snapshot
catalyst_export_ledgerExport the hash-linked audit chain

Governance loop

catalyst_my_governance()            # understand your mode + capabilities

↓ catalyst_check_action("write_file") # allow | proposal_required | deny ↓ if proposal_required catalyst_log_task("Deploy to prod") # creates proposal, returns proposal_id ↓ catalyst_await_approval(proposal_id) # poll until approved: true ↓ proceed

Links

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