Look twice.Find the gem.

AI agents and MCP servers, each published with its source and what the checks found.

Marketplace

  • Everything
  • AI agents
  • Apps
  • MCP servers
  • Templates
  • What people want
  • What changed this week
  • The verification standard
  • The ooruby Index
  • Servers that publish no source
  • Reliability guides
  • What the catalogue holds
  • Sell here

Our library

  • Everything, in one place
  • Guides
  • Glossary
  • Calculators
  • Checklists and cheat sheets
  • Community

ooruby

  • Home
  • For teams
  • Site status
  • Company projects
  • RSS feed

Verification records what our published tests found on a specific version at a specific date. It is not a warranty, and it does not certify that software is free of defects.

Rubricv1.0
AI agentsAppsMCP serversTemplatesWantedCommunityOur library
Sign inSell
Before you buy
All guides
Before you buyBeginner· 7 min read

How to judge an agent in ten minutes

The one thing to remember

Permissions first, measured numbers second, reviews third. The description is marketing and it goes last.

The question

Have an order you follow every time, so you stop being persuaded by whichever listing is written best.

Figure

How to judge an agent in ten minutes works, in one picture

1Start at the permissions block, not the top of the page2Then the measured numbers, and notice the blanks3Then reviews, and only the verified ones4Run it before you pay

The same argument as the text, as a chain. Each step is what makes the next one possible.

  1. 1

    Start at the permissions block, not the top of the page

    Permissions and data access, on every listing page

    The first question is not whether it works. It is what it would be able to do if it went wrong. Scroll straight to the permissions and data handling block and read what it reads, what it writes and where it sends things.

    If the answer is broader than the job needs, stop there. A summarising tool that wants write access is telling you something about how it was built.

  2. 2

    Then the measured numbers, and notice the blanks

    Success rate, median run time and cost per run are measurements from our sandbox, which has run nothing yet, so today they are blank everywhere. A blank is not a bad number, it is the absence of one.

    Cost per run is the one people skip and then regret. Multiply it by how often you would actually use the thing, not by how often you imagine using it.

  3. 3

    Then reviews, and only the verified ones

    Reviews on this site come only from people who bought the listing, one per purchase. That is a much smaller number than a review count elsewhere, and it is a much more useful one.

    Read the two star reviews first. People who are happy tend to write the same sentence; people who are disappointed tell you specifically what it did not do.

  4. 4

    Run it before you pay

    No listing can be run here yet. Running a package means executing code this site has not finished reading, and that waits on isolated infrastructure the owner has not chosen yet. What can be tried is a hosted server's connection: its page tests the handshake and the tool list, with no credentials. Anything else, run yourself in a container you are willing to throw away. Ten minutes there is worth more than an hour of reading.

    Give it the awkward case rather than the clean one. Everything works on the clean one.

    If you cannot try a listing and it has no refund window, you are being asked to take all of the risk.

You have got it when

You can evaluate a listing you have never seen before in ten minutes and say why you did or did not buy it.

Read next

Before you buy
Permissions worth refusing
Before you buy
What metered pricing really costs
Running it safely
Try a listing before you pay
Before you buy
Should you build it or buy it?
How verification works
What we do not check
Before you buy
How to check an MCP server for SSRF yourself
The bottom line

Permissions first, measured numbers second, reviews third. The description is marketing and it goes last.

See the AI and semiconductor names

The near-monopolies and the commodities, side by side, because they look identical from outside and they are not.