Domains
Domainsdomains
Providers using this tag (125)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Exemplar 9 Complete, well-documented, and agent-ready
Strong 22 Solid coverage with minor gaps
Developing 42 Usable, with meaningful gaps to close
Thin 36 Limited public surface area
Emerging 13 Early or largely undocumented
Minimal 3 Almost no public developer surface
APIs with this tag (114)
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 →
Exemplar 10 Complete, well-documented, and agent-ready
Strong 24 Solid coverage with minor gaps
Developing 37 Usable, with meaningful gaps to close
Thin 32 Limited public surface area
Emerging 10 Early or largely undocumented
Minimal 1 Almost no public developer surface
Score breakdown
Related tags
Where this tag comes from
Cohort brief
Auto-generatedThe 125 providers in the APIs.io catalog tagged Domains, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Contract Quality | 51.3 | 17.5 | +33.8 | 125 |
| Developer Ergonomics | 42.7 | 17.9 | +24.8 | 125 |
| Access Clarity | 40.6 | 22.3 | +18.3 | 125 |
| Operational Transparency | 29.1 | 11.3 | +17.8 | 125 |
| Discoverability | 72.6 | 60.4 | +12.2 | 125 |
| Contract Governance | 16.2 | 6.4 | +9.8 | 125 |
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.
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 46% | 16% | +30 |
| MCP server (first-party) | 20% | 7% | +13 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 18% | 9% | +9 |
| Security | 97% | 88% | +9 |
| Arazzo workflows | 10% | 2% | +8 |
| Governance rules | 40% | 13% | +27 |
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.
- 1 Brevo 87.3
- 2 Stripe 83.2
- 3 Mailchimp 81.5
- 4 Didomi 77.1
- 5 Squarespace 75.8
- 6 SMTP2GO 73.6
- 7 Pirsch 68.7
- 8 Unbounce 68.7
- 9 Novu 66.6
- 10 MailerSend 64.6
- 1 Primitive 75.2
- 2 Sylvia API 66.9
- 3 Automattic 62.3
- 4 Unbounce 59.6
- 5 Extole 57.2
- 6 HeyMilo 52.3
- 7 MailerSend 50.2
- 8 Lilt 49.8
- 9 Brevo 49.6
- 10 Stripe 47.8
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
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.
Call it yourself
curl for this page
curl "https://apis.io/api/v1/tags/domains"
curl "https://apis.io/api/v1/tags?limit=25"
curl "https://apis.io/api/v1/cohorts/tag/domains"
curl "https://apis.io/api/v1/cohorts/tag/domains/stats" \
-H "X-API-Key: $APIS_IO_KEY"
Discovery needs no key. Ratings and market analysis are Pro.