Open source
The tools we use, published.
Everything here runs in our own products first. When a tool has earned its place in how we build and run our MCP apps, we publish it so you can use it too. Each one is MIT licensed and says what it does, who it is for and how current it is.
Maintained by Presso Network
connector-preflight
Checks a remote MCP server against Claude's connector directory rules before you submit it.
For: People building MCP servers they want listed in Claude's connector directory.
Command line
npx -y github:PressoNetwork/connector-preflight https://your-server/mcpGitHub Action
uses: PressoNetwork/connector-preflight@v0Claude Code plugin
/plugin marketplace add PressoNetwork/connector-preflight /plugin install connector-preflight@connector-preflight- Read-only: it initialises and lists, and never calls a tool or registers an OAuth client.
- Zero dependencies. Needs Node 20 or later.
- Every rule cites the public page it comes from, and a weekly job re-reads those pages.
The repository on GitHub (opens in a new tab)
Facts checked against the repository on 30/10/2026.
Maintained by Kristian Papadakis
claude-skills
A hub marketplace of Claude Code skill plugins, one per department, each in its own repository.
For: People running a small business or building with Claude and MCP, in Claude Code or the Claude app.
Claude Code
/plugin marketplace add kristian-presso/claude-skills /plugin install operator-discipline@claude-skills- Swap operator-discipline for any plugin below, or install them all.
- Each skill is scored with and without it using claude plugin eval, and ships only if it helps.
- In the Claude app, upload a single skill folder as a zip in your skills settings.
The department plugins
- operator-discipline (opens in a new tab)
- How an agent behaves when it is doing real work for a busy person.
- operator-starter (opens in a new tab)
- A way of working for running a small business with Claude Code.
- agent-builder (opens in a new tab)
- Building MCP servers, MCP Apps and agents with Claude.
- gtm (opens in a new tab)
- Go-to-market for anyone selling B2B.
- marketing (opens in a new tab)
- Content and search, for Google and AI answer engines.
- uk-business (opens in a new tab)
- Running a small UK limited company. Reference, not advice.
- eu-business (opens in a new tab)
- Running or selling into a small business in five EU countries. Reference, not advice.
The repository on GitHub (opens in a new tab)
Facts checked against the repository on 30/10/2026.
We also build connectors and tools for teams. Tell us what you need.