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v0.9.11 · Product update Release notes

Sigrix-delivered MCP servers and a rebuilt marketplace

Founding sellers can now sell their own MCP server through Sigrix: they upload the package, a moderator reads the code, and buyers add it to Claude Code, Claude Desktop or Cursor from the listing's page. The marketplace is rebuilt, a new page explains how buying works, and a listing you bought keeps its page open to you if its seller withdraws it. We also fixed checkout and payout setup, and improved accessibility and access checks across the site.

SX Sigrix team
Published Oct 7, 2026
Version v0.9.11
Read time 4 min
TL;DR
  • Founding sellers can sell their own software as an MCP server that Sigrix reviews and delivers, and that runs on the buyer's own machine.
  • The marketplace is rebuilt, with new pages on how buying works, custom solutions and what each seller badge means.
  • A listing you bought keeps its page open to you if its seller withdraws it, and checkout sign-in now works for guests.
  • Payout accounts now open in the seller's own country. If yours shows the wrong one, see "If you sell" below.

What shipped

  • New
    MCP servers Sigrix delivers
    Founding sellers upload their own MCP server. A moderator reads the code before it goes live, and the listing's page shows buyers how to add it to Claude Code, Claude Desktop or Cursor.
  • New
    How buying works
    A new page walks through finding a listing, checking it before you pay, and what you own afterwards.
  • New
    n8n workflows
    Their own section under Products. Each lists the services it calls, the credentials you provide and what it costs to run, and comes with none of the seller's credentials.
  • New
    Seller badges, explained
    A new Badges page says what each badge means. Trusted is now earned automatically, by the rule stated there, instead of being granted by hand.
  • New
    Save for later
    Prompt, persona, skill and crew pages gained a Save heart, so you can keep a listing in Favorites.
  • New
    Custom solutions
    Built an MCP server, agent or integration that doesn't fit a listing type? A new page explains how to bring it to Sigrix.
  • New
    Four more open-source projects
    Bailey, Gatehouse, sigrix-launcher and sigrix-runtime join Postern, sigrix-mcp and mullion on the open-source page.
  • Imp
    A rebuilt marketplace
    Cleaner cards with a quick-add button. Newest sorts by the date a listing was created, and Popular by likes, ratings and sales.
  • Imp
    Daily AI allowance on screen
    Wherever you run a model on Sigrix's AI key while building a listing, the page shows how many of today's tokens you have left.
  • Imp
    Review covers more edits
    A live product's setup steps, disclosed services or shipped files, or a crew's inputs, now send it back to review when they change.
  • Imp
    Accessibility and phones
    We fixed text and controls that fell below AA contrast in either theme, kept keyboard focus inside dialogs, and made pages, long names and emails fit a phone.
  • Imp
    Tighter access checks
    A listing that isn't public, and what a buyer pays for, now reach only the people meant to see them, on pages and APIs alike.
  • Fix
    Payout accounts open in your country
    Stripe payout accounts were all opened in Poland, the platform's country, and Stripe can't change that later. Setup now asks for your country first.
  • Fix
    The page after paying
    Coming back from Stripe showed an error even though the purchase had gone through. It now shows your receipt.
  • Fix
    Signing in at checkout
    The Sign in link works for guests, a new account returns to checkout, and an item you just bought isn't offered back in your cart.
  • Fix
    Withdrawn listings
    If a seller withdraws a listing you bought, its page now stays open to you, as your download already did.
  • Fix
    Editing a returned listing
    Editing a rejected or returned listing no longer locks it partway through. It goes back to review when you submit.
  • Fix
    Sort by on your listings
    Recent, Top selling and Most viewed on your listings page now sort as they say.

If you buy

  • Find your way around. How buying works walks through checking a listing before you pay and what you own afterwards. On the marketplace, n8n workflows have their own section, and a listing you save goes to Favorites.
  • MCP servers Sigrix delivers. The listing's page lists the server's tools, says what the approved version runs on, and gives the setup for Claude Code, Claude Desktop and Cursor with the listing's identifier filled in. Your token is on Plugins.
  • If a seller withdraws something you bought, its page stays open to you, as the download does.
  • Running bundles with the Postern runner? Each runner can now have its own token, scoped to one listing, so adding a runner no longer means regenerating the token everything else uses.

If you sell

  • Check your payout country. Payout setup in Settings now asks for your country before it opens your Stripe account. Until now every account opened in Poland, and Stripe can't change an account's country afterwards. If yours shows the wrong one and setup isn't finished, choose Start over. If you've already submitted it, write to support@sigrix.io: we close the account at Stripe, which needs a zero balance, and then Start over opens a new one.
  • Badges. Badges explains every seller badge. Trusted is now granted and removed automatically by the rule stated there, including for sellers who held it before. Your badges on your storefront settings shows where you stand.
  • Review. A live product's setup steps, disclosed services and shipped files, and a crew's inputs, now go back to review when they change. A rejected or returned listing stays as it is while you edit it, and goes back to review when you submit.
  • MCP servers, for founding sellers. Upload your server on the listing's Package step. A moderator reads the code, and you're told what they decided. MCP servers can now be listed for free. Built something that fits no listing type? Tell us on Custom solutions.
  • Publishing from your editor. Set up the Sigrix MCP server goes from nothing installed to a working connection in Claude Code, VS Code, Claude Desktop or Cursor. Selling an n8n workflow that calls MCP servers? Read Using MCP servers in n8n workflows you sell.

Privacy and security

  • Deleting an account now deletes its message threads with sellers, both sides of each thread, and its threads with our moderators. It also takes the person's name off replies they sent about a report. If someone you've messaged deletes their account, your thread with them goes too; messages you were emailed stay in your inbox.
  • Access checks. Pages and APIs now agree about who may see a listing that isn't public, and who receives what a buyer pays for.
  • Found a security problem? Write to security@sigrix.io.

Open source

Open source now lists seven projects. New this release:

  • sigrix-launcher starts a Sigrix-delivered MCP server you bought.
  • sigrix-runtime is the Postern runner every bundle carries, now a package of its own. It can also serve an MCP server's tools over Postern.
  • Gatehouse is the browser page an agent is run from.
  • Bailey is our open-source assistant for ready-made solutions.

What's next

Next is 1.0, our launch release. It centres on reliability under load and on the first paid MCP servers Sigrix delivers.

01 Sell your own software

Founding sellers upload an MCP server, a moderator reads the code, and buyers add it to their AI client from the listing's page.

02 Browse with less guesswork

Newest means newly listed, Popular counts likes, ratings and sales, and a new page says what each seller badge means.

03 Keep what you bought

A withdrawn listing's page stays open to its buyers, and the page after paying shows your receipt instead of an error.

★ Lab

Assistants that Bailey installs

An assistant you download from Sigrix now includes a plugin that Bailey, our open-source assistant app, can install, and sellers can name the documents it asks you for, each with a sample. Bailey is at an early version.

Why it matters

Until now, an MCP listing could only name a package that anyone could install for free from PyPI or npm, so a paid MCP listing sold nothing a buyer couldn't already get. Now a seller can hand Sigrix the package instead. A person reads the code before it goes live, only the seller and the listing's buyers can install it, and it still runs on the buyer's machine, never on ours.

Most of the other fixes are in moments people meet once and seldom report: the page after paying, the first payout setup, creating an account halfway through checkout. If something in one of those goes wrong for you, tell us on the Hub.

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