emerging · 1.1 marketcapability domainresource

JSON:API

Score 20.8 / 100 34 providers +4 via APIs 6 APIs Search apis.io →

Providers using this tag (34)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Exemplar 1 Complete, well-documented, and agent-ready
Strong 9 Solid coverage with minor gaps
Developing 8 Usable, with meaningful gaps to close
Thin 10 Limited public surface area
Emerging 5 Early or largely undocumented
Minimal 1 Almost no public developer surface

APIs with this tag (6)

Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Strong 1 Solid coverage with minor gaps
Developing 2 Usable, with meaningful gaps to close
Thin 2 Limited public surface area
Emerging 1 Early or largely undocumented

Companies reaching this through an API (4)

These companies publish an API, specification or operation carrying “JSON:API” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

Emory University Fabric Origin Ruby Programming Language and Popular API Gems University of Helsinki

Score breakdown

Frequency
41.3
log-scaled weighted occurrences
Breadth
0.5
spread across providers
Quality lift
50.6
mean composite of providers using it
Cohesion
1.5
strength of nearest seed neighbor

Related tags

Discovery 6 co-occurrences Content 5 co-occurrences File 6 co-occurrences Customers 5 co-occurrences Open Data 6 co-occurrences REST 6 co-occurrences Media 5 co-occurrences User 10 co-occurrences

Where this tag comes from

Provider tag34
Api tag6

Cohort brief

Auto-generated

The 34 providers in the APIs.io catalog tagged JSON:API, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
34
all scored
Mean Kin Score
42.2
+19.4 vs catalog 22.8
Mean Agent Readiness
31.1
+17.8 vs catalog 13.3
Spread
0–69.3
median 43.1 · σ 16.7
How the 34 split by band
Exemplar 1Strong 9Developing 8Thin 10Emerging 5Minimal 1
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 45.5 18.2 +27.3 34
Developer Ergonomics 45.2 22.1 +23.1 34
Operational Transparency 27.6 12.4 +15.2 34
Contract Governance 21.3 9.4 +11.9 34
Discoverability 69.2 57.9 +11.3 34
Access Clarity 35 25 +10 34

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes
ArtifactThis cohortCatalogDifference
MCP server (any) 29% 16% +13
MCP server (first-party) 24% 14% +10
Agent Skills 0% 0% 0
OAuth scopes 38% 13% +25
Security 100% 98% +2
Arazzo workflows 9% 2% +7
Governance rules 82% 35% +47

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score
  1. 1 Apibara.tech 69.3
  2. 2 Unit 66
  3. 3 NationBuilder 65
  4. 4 Social Fetch 64.5
  5. 5 Cobot 62.6
  6. 6 Commerce Layer 59.9
  7. 7 Beyond Pricing 57.7
  8. 8 Credo AI 56.7
  9. 9 Drupal 55.9
  10. 10 Decisiv 54.7
Top by Agent Readiness
  1. 1 Cobot 58.6
  2. 2 Social Fetch 57.1
  3. 3 Padlet 52.3
  4. 4 Apibara.tech 52
  5. 5 VergeSense 50.9
  6. 6 Beyond Pricing 47.1
  7. 7 Decisiv 46.4
  8. 8 Transistor 45.6
  9. 9 Drupal 43.8
  10. 10 Ankorstore 38.9
All 34 members of this roster resolve to a scored provider in the catalog.
Coverage caveat. 25 of 34 scored members had under half their catalog-attributable points satisfied at all (catalog_earned / catalog_max < 0.5). They are INCLUDED in the mean above. A large share here means the cohort mean is partly a measurement of how far our enrichment reached, not only of how these providers publish.Generated from the catalog build of 7 November 2026, across 38912 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.

Work with this as data

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Tools for tags

7 MCP tools reach this
  • find_tagsBrowse and filter every tag in the catalog.
  • get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
  • cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
  • cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

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