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factstore MCP server

by Victor-EU·io.github.Victor-EU/factstore·v0.1.0
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A fact store for AI agents, on Postgres: registered attributes, every write citing its evidence.

B83/100grade B
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Safety scan
B83/100

full report

Adoption
Growing

0 stars24 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

factstore tools

No tool declarations could be read from the package source. They show once the server is installed.

Public scan report

scanner v0.1.10 · 2026-10-14 · same rubric, same numbers if you re-run it

no findings
  • Code scan19 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitystatic API keys via environment variables6/15
  • Maintenancelast push 10 days ago15/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 83/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How factstore compares

Against every graded E-commerce MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
83/100
higher than 77% of 2,174 E-commerce servers
Downloads a week
24
more than 10% of 411 E-commerce servers with a package

Install factstore in Claude Code, Cursor or VS Code

claude mcp add factstore -- uvx factstore
Add to Cursor

What the publisher says

From the factstore repository's README, as published. We do not edit it. Read it on GitHub

factstore

A fact store for AI agents, on Postgres. Agents record what a company's systems and documents say as facts: a value for a registered attribute, in a transaction stamped with who wrote it and the document it came from. Nothing is overwritten, so the store can say what it knew on any date.

Skills that ship with it index a company's systems from their exports, and read documents and mail into facts. They leave people's personal details in the source. MIT-licensed.

Install

pip install factstore

In Claude Code, the plugin brings the MCP server and the skills:

/plugin marketplace add Victor-EU/factstore
/plugin install factstore@factstore

factstore/README.md walks through Postgres, a first store and connecting an agent.

What's here

Status

0.1.0, alpha. The kernel's code held unchanged through every test, up to 3.2 million facts in one store. The skills passed every round on public data: product lists, a million order lines, a marketplace's duplicate customers, 100 suppliers' forms and a trader's mailbox. No company has run it on its own data yet.

Nothing above is checked by us. What we check is on the safety report.

factstore: common questions

Is factstore MCP server safe?
Mostly: it is graded B (83/100). Read the factstore safety report
How do I install factstore?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does factstore need an API key?
Yes. The registry entry asks for FACTSTORE_DSN, FACTSTORE_EXCISE_DSN.
Is factstore maintained?
The last commit was 31 days ago (2026-10-04). The latest release is v0.1.0.
What can I use instead of factstore?
Servers from other publishers that do the same job: Apify MCP server, Mneme Memory MCP server and Heimdall MCP server.
How does factstore compare with other E-commerce MCP servers?
safety score 83/100 (higher than 77% of 2,174 E-commerce servers); downloads a week 24 (more than 10% of 411 E-commerce servers with a package). Full comparison.

Alternatives to factstore

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  • Buywhere
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