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APIs · head to head

Enfuce vs Stainless

Enfuce logo

Enfuce

APIs

European issuer processor holding its own payment institution licence

From
On request
Rated
-
Full reviewWebsite
Stainless logo

Stainless

APIs

Generates client SDKs, API docs, and MCP servers from an OpenAPI spec

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Stainless has a free tier, so it costs nothing to try first.
  • Each has a real cost: Enfuce coverage is European, so a programme that also needs US or Asian issuing requires a separate processor and a separate integration.; Stainless starter and Pro plan prices are not published and require contacting the company.
  • They diverge on capability: Enfuce covers Licensed issuing, Stainless covers SDK generation.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Enfuce and Stainless actually diverge.

Attributes where Enfuce and Stainless differ
AttributeEnfuceStainless
Starting priceOn requestFree
Pricing modelquotefreemium
Free tierNoYes
PlatformsWeb, REST APIweb, api

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 Enfuce

  • Licensed issuing
  • Card processing
  • Tokenisation
  • Spend controls
  • Multi-currency programmes
  • Carbon and data services

Only in Stainless

  • SDK generation
  • MCP server generation
  • Docs site generation
  • Webhooks and streaming support
  • Automated unit tests
  • Git integration

What people use each for

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

Enfuce

  • A European fintech launching cards without spending two quarters finding a sponsor banknot Stainless
  • A corporate issuing fuel or expense cards across several EU countries on one programmenot Stainless
  • A bank migrating an existing European card portfolio off a legacy processornot Stainless
  • A programme that must report cardholder transaction carbon data to meet sustainability commitmentsnot Stainless

Stainless

  • Generating typed SDKs for a public APInot Enfuce
  • Producing an MCP server from an existing OpenAPI specnot Enfuce
  • Building an API documentation site alongside client librariesnot Enfuce
  • Giving open-source APIs a free SDK generation pathnot Enfuce

Where each one falls short

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

Enfuce

  • Coverage is European, so a programme that also needs US or Asian issuing requires a separate processor and a separate integration.
  • Where Enfuce acts as the licensed issuer it takes on regulatory risk and prices accordingly, so the convenience of skipping a sponsor bank is not free.
  • European interchange caps limit programme revenue far below US levels, so business cases imported from a US card model do not survive the move.
  • It is a smaller supplier than Marqeta or i2c, which means less negotiating room on scheme fees and a thinner partner ecosystem around it.
  • Pricing is entirely quoted with monthly minimums, so low-volume programmes carry a fixed cost that does not scale down with a slow launch.

Stainless

  • Starter and Pro plan prices are not published and require contacting the company.
  • The free plan caps APIs at 25 endpoints, which excludes larger production APIs.
  • Overage charges apply per SDK/endpoint/month once limits are exceeded, which can make costs unpredictable at scale.

Pricing, plan by plan

Enfuce

On request
  • Enfuce issuing and processing$undefined/year
    • Per-active-card and per-transaction fees with monthly minimums
    • Higher pricing where Enfuce acts as licensed issuer rather than processor only
    • Interchange arrangements depend on who holds the issuing licence

Stainless

Free
  • FreeFree
    • Up to 5 generators (SDKs, docs, or MCP servers)
    • 5 seats
    • APIs with 25 or fewer endpoints
  • Starter$undefined/mo
    • Unlimited generators
    • Expanded seats
    • Private SDKs of any size
  • Pro$undefined/mo
    • Custom enterprise features and pricing
  • Enterprise$undefined/mo
    • Dedicated support
    • SOC 2 compliance reports
    • Purchase order/invoicing with negotiable terms

Which should you pick?

Choose Enfuce if

  • You need licensed issuing.
  • You work on Web, REST API.
  • You also want card processing.
Enfuce review

Choose Stainless if

  • You need sdk generation.
  • You want to start without paying.
  • You work on web, api.
  • You also want mcp server generation.
Stainless review

Questions people ask

Is Enfuce or Stainless better?
Neither clearly leads. Enfuce starts at On request and Stainless at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Enfuce or Stainless?
Stainless has a free tier; the other does not. Paid plans start at On request for Enfuce and Free for Stainless.
Does Enfuce or Stainless run on more platforms?
Enfuce runs on Web, REST API. Stainless runs on web, api.
Can I use Stainless for free?
Yes. Stainless has a free tier, so you can try it without paying. Enfuce starts at On request.
What is Enfuce best used for?
Enfuce is most often used for a european fintech launching cards without spending two quarters finding a sponsor bank, a corporate issuing fuel or expense cards across several eu countries on one programme, a bank migrating an existing european card portfolio off a legacy processor, a programme that must report cardholder transaction carbon data to meet sustainability commitments. Of those, a european fintech launching cards without spending two quarters finding a sponsor bank and a corporate issuing fuel or expense cards across several eu countries on one programme are not what Stainless is typically brought in for.
What can Enfuce do that Stainless cannot?
Enfuce covers Licensed issuing, Card processing, Tokenisation, Spend controls. Stainless covers SDK generation, MCP server generation, Docs site generation, Webhooks and streaming support.

Answered from the vendors’ own pages

Enfuce: Do I need my own licence to use Enfuce?

Not necessarily. Enfuce holds Finnish payment institution authorisation and can act as issuer, or process under your own licence if you have one.

Stainless: Is there a free plan, and what are its limits?

Yes. The Free plan supports up to 5 generators, 5 seats, APIs with 25 or fewer endpoints, and 100 preview builds per month, with email support.

Source
Enfuce: Which regions does it cover?

Europe. It is not a route to issuing cards in the United States or Asia.

Stainless: Who owns the generated SDK code?

The generated SDK code is owned by the customer and published by Stainless under the Apache 2.0 license.

Source
Enfuce: How does interchange work?

Who holds the issuing licence determines who receives interchange, so the licensing choice and the revenue model are the same decision.

Stainless: What happens if I exceed my plan's endpoint limit?

Customers exceeding their endpoint limits are billed per SDK, per endpoint, per month for the overage.

Source
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