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APIs · head to head

Codat vs Svix

Codat logo

Codat

APIs

One API for small business accounting, banking and commerce data

From
On request
Rated
-
Full reviewWebsite
Svix logo

Svix

APIs

Outbound webhook sending as a service, with retries, signing and a customer-facing portal

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Svix has a free tier, so it costs nothing to try first.
  • Each has a real cost: Codat the accounting platforms are metering developer access themselves, with Xero introducing tiered connection based developer pricing from 2 March 2026, so a cost you do not control has been inserted between you and the data and it scales with the number of customers you connect.; Svix the Professional tier at 490 US dollars a month includes the same 50,000 messages as the free tier, so the upgrade buys SLA, throughput and retention rather than volume, which is a jarring step for a growing product.
  • They diverge on capability: Codat covers Normalised accounting API, Svix covers Automatic retries.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Codat and Svix actually diverge.

Attributes where Codat and Svix differ
AttributeCodatSvix
Starting priceOn requestFree
Pricing modelquotePer month by message count
Free tierNoYes
PlatformsAPI, WebWeb, Cloud, Docker

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 Codat

  • Normalised accounting API
  • Banking and commerce data
  • Lending products
  • Write-back
  • Business verification
  • Supplier onboarding
  • Connection management
  • Data quality handling

Only in Svix

  • Automatic retries
  • Payload signing
  • Consumer portal
  • Event types and filtering
  • Delivery logs and replay
  • Rate limiting
  • Static source IPs
  • Language SDKs

What people use each for

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

Codat

  • A business lender that wants live ledger data for underwriting rather than a borrower emailing exported PDF accountsnot Svix
  • A commercial bank monitoring covenant compliance across a portfolio of small business borrowers continuously rather than quarterlynot Svix
  • A payment company verifying a merchant trading history before extending working capitalnot Svix
  • A B2B platform writing bills and payments back into a customer accounting system so reconciliation happens automaticallynot Svix

Svix

  • A SaaS company adding webhooks to its API that does not want to build retry, signing and a customer debugging UI from scratchnot Codat
  • A payments or fintech product whose customers need signature verification libraries in several languages they did not writenot Codat
  • An engineering team drowning in support tickets from customers whose endpoints silently failed and who need self-service delivery logsnot Codat
  • A platform with a small number of very slow customer endpoints that must not delay deliveries to everyone elsenot Codat

Where each one falls short

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

Codat

  • The accounting platforms are metering developer access themselves, with Xero introducing tiered connection based developer pricing from 2 March 2026, so a cost you do not control has been inserted between you and the data and it scales with the number of customers you connect.
  • Pricing is opaque and enterprise shaped for a product developers expect to evaluate technically first, so build decisions get made before anyone knows the unit economics.
  • Normalisation hides but does not remove the underlying differences between accounting systems, and edge cases in multi-currency, journals and tax handling surface as data quality problems that your team must reason about in each source system anyway.
  • Data quality depends on the small business keeping its books properly, so a lender using ledger data for underwriting inherits the bookkeeping standard of its worst borrower and needs its own validation layer regardless.
  • Connection breakage from expired tokens and platform API changes is an ongoing operational load, and a borrower whose connection lapses stops being monitored silently, which is the failure mode that matters most in a lending portfolio.

Svix

  • The Professional tier at 490 US dollars a month includes the same 50,000 messages as the free tier, so the upgrade buys SLA, throughput and retention rather than volume, which is a jarring step for a growing product.
  • Only attempted messages count toward usage, but a customer with many subscribed endpoints multiplies a single event into many billable messages, and forecasting that fan-out before launch is difficult.
  • The open source server is MIT licensed but trails the hosted product in features, so self-hosting is a fallback position rather than a genuinely equivalent option.
  • Routing outbound customer traffic through a third party puts a vendor in the delivery path for events your customers may treat as contractual, which some security reviews will not accept.
  • Payload retention is 30 days on the free tier and 90 on Professional, so anyone needing longer delivery history for audit must pay for Enterprise or log independently.

Pricing, plan by plan

Codat

On request
  • Codat Platform$undefined/year
    • Priced by connected companies, data types and products
    • Lending and verification products priced above core data access
    • Annual enterprise agreements

Svix

Free
  • FreeFree
    • 50,000 messages a month included
    • Overage at $0.0001 per message
    • 99.9% uptime SLA
  • Professional$490/month
    • 50,000 messages included, same as free
    • 99.99% uptime SLA
    • 800 messages per second
  • Enterprise$undefined/year
    • Custom volume and rate limits
    • 99.999% uptime SLA
    • Custom retention

Which should you pick?

Choose Codat if

  • You need normalised accounting api.
  • You work on API, Web.
  • You also want banking and commerce data.
Codat review

Choose Svix if

  • You need automatic retries.
  • You want to start without paying.
  • You work on Web, Cloud, Docker.
  • You also want payload signing.
Svix review

Questions people ask

Is Codat or Svix better?
Neither clearly leads. Codat starts at On request and Svix at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Codat or Svix?
Svix has a free tier; the other does not. Paid plans start at On request for Codat and Free for Svix.
Does Codat or Svix run on more platforms?
Codat runs on API, Web. Svix runs on Web, Cloud, Docker.
Can I use Svix for free?
Yes. Svix has a free tier, so you can try it without paying. Codat starts at On request.
What is Codat best used for?
Codat is most often used for a business lender that wants live ledger data for underwriting rather than a borrower emailing exported pdf accounts, a commercial bank monitoring covenant compliance across a portfolio of small business borrowers continuously rather than quarterly, a payment company verifying a merchant trading history before extending working capital, a b2b platform writing bills and payments back into a customer accounting system so reconciliation happens automatically. Of those, a business lender that wants live ledger data for underwriting rather than a borrower emailing exported pdf accounts and a commercial bank monitoring covenant compliance across a portfolio of small business borrowers continuously rather than quarterly are not what Svix is typically brought in for.
What can Codat do that Svix cannot?
Codat covers Normalised accounting API, Banking and commerce data, Lending products, Write-back. Svix covers Automatic retries, Payload signing, Consumer portal, Event types and filtering.

Answered from the vendors’ own pages

Codat: What is changing with Xero in 2026?

Xero is introducing a tiered, usage based developer pricing model effective 2 March 2026, with tiers based on the number of customer connections an app holds. That is a new cost in the chain for anyone reading Xero data at scale, whether directly or through Codat.

Svix: How much does Svix cost?

Free up to 50,000 messages a month; Professional starts at 490 US dollars a month with the same included volume but better SLA and throughput.

Codat: Can Codat write data back?

Yes. It supports pushing bills, payments and journal entries into accounting systems, not only reading from them.

Svix: Can I self-host it?

Yes, there is an MIT licensed server, but it lags the hosted service in features and has no SLA.

Codat: Is pricing published?

No. It is quoted by connected companies, data types and products, and users consistently describe it as opaque.

Svix: What counts as a message?

Attempted or transformed deliveries. Retries and messages filtered out because no endpoint subscribed are not charged.

Codat: Does it replace bank data aggregation?

Not entirely. It covers banking alongside accounting and commerce, but lenders commonly run it beside a bank aggregator for transaction level cash flow.

Svix: Does it handle inbound webhooks?

Its focus is outbound sending on behalf of API providers, not receiving webhooks from third parties.

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