json-schema-org/json-schema-spec

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The JSON Schema specification

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Forks: 461
Open beginner issues: 0
Indexed issues: 62
Avg merge: 3d 10h
Merged PRs (30d): 8

Dominant language: JavaScript
License: No license data
Last GitHub push: Sep 4, 2026
Latest indexed: Sep 18, 2026
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62 open issues indexed

bug: meta.schema.json enforces valid regex for pattern and patternProperties even though the spec only says SHOULD Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

json-schema-org/json-schema-spec#1760 · 7 comments · Opened Aug 12, 2026
Proposal: Cross-Property & Dynamic Validation via Common Expression Language (CEL) Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1729 · 2 comments · 2 reactions · Opened Jul 5, 2026
✨ Proposal: Support `errorMessage` Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 30/100

json-schema-org/json-schema-spec#1725 · 1 comment · Opened Jul 1, 2026
✨ Proposal: Support `deprecationMessage` Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

json-schema-org/json-schema-spec#1716 · 2 reactions · Opened Jun 30, 2026
✨ Proposal: Can we have a 2020-12 meta-schema that enables `format-assertion`? Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 42/100

json-schema-org/json-schema-spec#1711 · 4 comments · 1 reaction · Opened Jun 2, 2026
✨ Proposal: Reference W3C string-meta for language and direction metadata on strings Open

proposal

Difficulty 2/5 1-3 hours Newbie friendliness 70/100

json-schema-org/json-schema-spec#1710 · 6 comments · Opened May 26, 2026
🧹 Clarification: For future drafts: RFC 3339 date-time strictness (§5.6 ABNF vs. §5.7 prose) Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

json-schema-org/json-schema-spec#1690 · 2 comments · 2 reactions · Opened Mar 19, 2026
✨ Proposal: redefine hostname and idn-hostname formats Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1678 · 6 comments · 1 reaction · Opened Feb 25, 2026
✨ Proposal: Allow `$comment` to be an array of strings for multiline support Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

json-schema-org/json-schema-spec#1663 · 4 comments · 1 reaction · Opened Jan 15, 2026
✨ Proposal: Standardize Efficient Object Graph Serialization Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 15/100

json-schema-org/json-schema-spec#1652 · 20 comments · Opened Dec 17, 2025
✨ Proposal: `recommended` keyword similar to `required` Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1647 · 5 comments · 2 reactions · Opened Nov 19, 2025
✨ Proposal: multi-line description array Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

json-schema-org/json-schema-spec#1645 · 5 comments · 1 reaction · Opened Nov 17, 2025
✨ Proposal: "itemsMultipleOf" Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 30/100

json-schema-org/json-schema-spec#1641 · 2 reactions · Opened Oct 25, 2025
Proposal: JSON Schema Standardization under Ecma International Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

json-schema-org/json-schema-spec#1622 · Opened Aug 18, 2025
Publication process for the spec Open

json-schema-org/json-schema-spec#1615 · 8 comments · 2 assignees · Opened Jul 21, 2025
Pre-release cleanup Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1612 · 9 comments · 1 reaction · Opened Jul 13, 2025
✨ Proposal: Provide a catalog of reusable types to replace most formats Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1607 · 3 comments · Opened Jun 11, 2025
✨ Proposal: Add `undefinedProperties` and `undefinedItems` Keywords Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1606 · 7 comments · Opened Jun 6, 2025
🧹 Clarification: Define In-Place Applicators' Subschemas and Results Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1605 · 8 comments · Opened Jun 4, 2025
Should `"format": "duration"` allow fractional seconds? Open

proposal validation

Difficulty 5/5 Over a week Newbie friendliness 35/100

json-schema-org/json-schema-spec#1603 · 11 comments · Opened May 23, 2025
Issue: subset schemas don't work with `unevaluatedProperties` across `oneOf` branches Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

json-schema-org/json-schema-spec#1585 · 6 comments · Opened Feb 17, 2025
✨ Proposal: `format` registry Open

proposal

json-schema-org/json-schema-spec#1552 · 20 comments · 5 reactions · 1 assignee · Opened Oct 28, 2024
✨ Proposal: Support $ref-to-enum in object `required` Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

json-schema-org/json-schema-spec#1551 · 5 comments · 1 reaction · Opened Oct 26, 2024
✨ Proposal: uniqueItems based several properties or subschema Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1546 · 7 comments · 1 reaction · Opened Oct 18, 2024
Add version identifier Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

json-schema-org/json-schema-spec#1532 · 5 comments · 2 reactions · Opened Jul 15, 2024
Wild idea for vocabs Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1523 · 4 comments · Opened Jun 20, 2024
$schema introduces specification-level circular dependency Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

json-schema-org/json-schema-spec#1521 · 12 comments · Opened Jun 18, 2024
Implement a common language style throughout the specifications Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1509 · 14 comments · Opened May 22, 2024
Use JSON Pointers instead of 'properties' or 'prefixItems' keywords Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 18/100

json-schema-org/json-schema-spec#1489 · 20 comments · Opened Feb 20, 2024
Machine-readable dialect (not vocabulary) definition document Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1423 · 8 comments · Opened Jul 12, 2023
Keyword URIs Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1422 · 3 comments · Opened Jul 5, 2023
Proposed Addition to JSON Schema: "Else-If" Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1410 · 21 comments · 9 reactions · Opened Jun 2, 2023
URI naming scheme for user/one-off/non-standard keywords Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1401 · 31 comments · Opened Apr 21, 2023
writeOnly => writeable, readOnly => readable Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1392 · 10 comments · Opened Mar 31, 2023
Type specific validating formats (stringFormat, numberFormat) Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1391 · 30 comments · Opened Mar 27, 2023
Is it possible to get a list of object keys using JSON pointers? Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1378 · 9 comments · Opened Feb 2, 2023
Annotation output for `propertyDependencies` Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

json-schema-org/json-schema-spec#1367 · 7 comments · Opened Dec 15, 2022
Keywords for describing array patterns; "concat", "someOf", array repetition/kleene star Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1323 · 32 comments · 1 reaction · Opened Oct 8, 2022
Hierarchical output structure needs clarification around which nodes are kept Open

Priority: Medium

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1319 · 17 comments · Opened Sep 26, 2022
Fix the "location" keyword classification to refer to schemas only Open

core

Difficulty 4/5 3-5 days Newbie friendliness 45/100

json-schema-org/json-schema-spec#1306 · 1 comment · Opened Sep 21, 2022
Strengthen "$schema" + "$vocabulary" requirements Open

core Type: Enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1301 · 4 comments · Opened Sep 19, 2022
Alternative: Relative JSON Pointer should allow starting from after last array item Open

Priority: Medium Type: Enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1236 · 2 comments · Opened May 21, 2022
Relative JSON Pointer should specify evaluation relative to JSON Pointer Open

Priority: Medium Type: Enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

json-schema-org/json-schema-spec#1235 · 3 comments · Opened May 20, 2022
Remove the notion of "canonical URIs" in favour of boundaried schema resources Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1183 · 6 comments · 1 reaction · Opened Feb 16, 2022
Reorganizing the meta-schemas Open

json-schema-org/json-schema-spec#1159 · 12 comments · 1 assignee · Opened Dec 11, 2021
Define the `schema.json` file-extension for application/schema+json Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

json-schema-org/json-schema-spec#1130 · 6 comments · 5 reactions · Opened Oct 4, 2021
Referential integrity for $schema and any external references Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

json-schema-org/json-schema-spec#1126 · 13 comments · Opened Sep 14, 2021
Request: Add precision and scale keywords for numeric instances Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

json-schema-org/json-schema-spec#1123 · 10 comments · 3 reactions · Opened Sep 3, 2021
Suggestion: optional keyword to complement required Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 30/100

json-schema-org/json-schema-spec#1112 · 36 comments · Opened Jun 6, 2021
Combine sections on compound documents (bundling) Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

json-schema-org/json-schema-spec#1111 · 1 comment · Opened Jun 3, 2021

json-schema-org/json-schema-spec

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