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APIs · head to head

KeystoneJS vs MX Technologies

KeystoneJS logo

KeystoneJS

APIs

Powerful Node.js headless CMS framework and API platform

From
Free
Rated
-
Full reviewWebsite
MX Technologies logo

MX Technologies

APIs

US financial data aggregation with heavy transaction cleansing and enrichment

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only KeystoneJS has a free tier, so it costs nothing to try first.
  • Each has a real cost: KeystoneJS database support is limited to PostgreSQL, MySQL and SQLite; MX Technologies coverage is United States focused, so any product with European or other international users runs a second aggregator and reconciles two data models, which removes most of the single vendor argument.
  • They diverge on capability: KeystoneJS covers REST API, MX Technologies covers Account aggregation.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which KeystoneJS and MX Technologies actually diverge.

Attributes where KeystoneJS and MX Technologies differ
AttributeKeystoneJSMX Technologies
Starting priceFreeOn request
Pricing modelopen-sourcequote
Free tierYesNo
PlatformsNode.js, Self-hostedAPI, Web
Founded2016Unknown

Identical on both: user rating (Not yet rated), category (APIs).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in KeystoneJS

  • REST API
  • GraphQL API
  • Admin interface
  • Node.js
  • Next.js
  • React
  • Databases
  • Node.js support

Only in MX Technologies

  • Account aggregation
  • Transaction cleansing
  • Categorisation
  • Merchant resolution
  • Account verification
  • Balance and funds checks
  • Data enhancement APIs
  • Consent and connection management

What people use each for

The jobs each tool is most often brought in to do.

KeystoneJS

  • Headless CMS implementationnot MX Technologies
  • Content management systemsnot MX Technologies
  • Customizable API-driven applicationsnot MX Technologies

MX Technologies

  • A credit union building a personal finance view in its own app that needs its own transaction descriptions made readablenot KeystoneJS
  • A lender using cash flow underwriting that needs categorised income and expense data rather than raw transaction stringsnot KeystoneJS
  • A bank wanting account verification and balance checks before initiating ACH debits to reduce returnsnot KeystoneJS
  • A fintech that already aggregates data elsewhere and licenses only the enrichment layer to clean what it hasnot KeystoneJS

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

KeystoneJS

  • Database support is limited to PostgreSQL, MySQL and SQLite
  • Keystone 5 is a separate legacy product documented on a different site and is not covered by the Keystone 6 docs
  • Upgrading requires following a dedicated Migrate to 8.0.0 guide, so major versions are not drop-in
  • Free support is a community Slack; enterprise-grade consulting and support is a separate paid engagement with Thinkmill and no published price

MX Technologies

  • Coverage is United States focused, so any product with European or other international users runs a second aggregator and reconciles two data models, which removes most of the single vendor argument.
  • Nothing is published on price and contracts are enterprise shaped, so a small fintech cannot estimate cost or start building without a sales process, unlike self-serve competitors.
  • Data enhancement is the differentiator and is licensed separately from aggregation, so the quoted aggregation price is not the price of the product people actually buy it for.
  • Categorisation and merchant resolution are statistical and get business to business and unusual transactions wrong more often than consumer retail, so lending decisions built on categorised data need their own review layer.
  • As the United States moves to regulated API access, connection quality depends on what each institution exposes, and the long tail of small banks and credit unions remains the weakest part of any aggregator including this one.

Pricing, plan by plan

KeystoneJS

Free
  • Open SourceFree
    • Full KeystoneJS
    • Community support

MX Technologies

On request
  • MX Platform$undefined/year
    • Priced by connected users, API calls and modules
    • Data enhancement licensed separately from aggregation
    • Enterprise contracts aimed at financial institutions

Which should you pick?

Choose KeystoneJS if

  • You need rest api.
  • You want to start without paying.
  • You work on Node.js, Self-hosted.
  • You also want graphql api.
KeystoneJS review

Choose MX Technologies if

  • You need account aggregation.
  • You work on API, Web.
  • You also want transaction cleansing.
MX Technologies review

Questions people ask

Is KeystoneJS or MX Technologies better?
Neither clearly leads. KeystoneJS starts at Free and MX Technologies at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, KeystoneJS or MX Technologies?
KeystoneJS has a free tier; the other does not. Paid plans start at Free for KeystoneJS and On request for MX Technologies.
Does KeystoneJS or MX Technologies run on more platforms?
KeystoneJS runs on Node.js, Self-hosted. MX Technologies runs on API, Web.
Can I use KeystoneJS for free?
Yes. KeystoneJS has a free tier, so you can try it without paying. MX Technologies starts at On request.
What is KeystoneJS best used for?
KeystoneJS is most often used for headless cms implementation, content management systems, customizable api-driven applications. Of those, headless cms implementation and content management systems are not what MX Technologies is typically brought in for.
What can KeystoneJS do that MX Technologies cannot?
KeystoneJS covers REST API, GraphQL API, Admin interface, Node.js. MX Technologies covers Account aggregation, Transaction cleansing, Categorisation, Merchant resolution.

Answered from the vendors’ own pages

KeystoneJS: Is KeystoneJS free?

Yes, KeystoneJS is free and open source with no licensing fees. Core platform has no lock-in and is contributed to by 250+ developers.

Source
MX Technologies: What does MX do that Plaid does not?

It sells transaction cleansing, categorisation and merchant resolution as a first class product, including on data you already hold, which is why financial institutions rather than startups are its core customers.

KeystoneJS: What are hosting costs for KeystoneJS?

KeystoneJS is self-hosted and deployment-agnostic. Hosting costs depend on your chosen deployment platform (Vercel, AWS, Heroku, etc.) and infrastructure, not KeystoneJS itself.

Source
MX Technologies: Does it cover Europe?

No. MX is United States focused. European coverage requires a different provider such as Tink.

KeystoneJS: Does KeystoneJS offer paid support?

Enterprise support with tailored options is available from Thinkmill, the company behind KeystoneJS. Pricing details available upon request.

Source
MX Technologies: Is pricing published?

No. Contracts are quoted by connected users, call volume and modules, with enhancement licensed separately from aggregation.

MX Technologies: Does it use screen scraping?

It uses direct bank APIs where institutions expose them and credential based connections elsewhere. The credential path is being deprecated across the industry, and coverage quality now tracks which banks have real APIs.

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