rjsf-team/react-jsonschema-form

Add an `ata-validator` alternative to AJV

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#5052 opened on May 1, 2026

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 (19 comments) (1 reaction) (1 assignee)TypeScript (13,175 stars) (2,136 forks)batch import
featurehelp wanted

Description

Prerequisites

What theme are you using?

validator-ajv8

Is your feature request related to a problem? Please describe.

No response

Describe the solution you'd like

It is in RJSF's interest to have other validator options available. Especially given how the frequency of AJV updates has appeared to drop over the last year.

However, not many good options were available until now.

ata-validator is a new high-performance JSON schema validator that could coexist with the existing AJV one. Pre-compiled schemas are also supported. Also related to #4614, as ata can output its errors in the Standard Schema format.

Describe alternatives you've considered

Continue relying strictly on AJV.

Contributor guide

Tech stack
typescriptreactnodejs
Domain
frontend
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Familiarity with JSON schema validatorsUnderstanding of RJSF validator plugin system
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Review the existing validator ajv8 package structure in /packages/validator ajv8. Understand how validators are registered and used in RJSF. The issue suggests creating a new validator package similar to the existing one but wrapping ata validator. Consider the differing API of ata validator and how to standardize error output. Check the discussion in the issue for additional requirements and the linked PR #4614 regarding Standard Schema format. No PR exists yet, so the implementation is open.