Y Combinator
Providers using this tag (252)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Developing 10 Usable, with meaningful gaps to close
Thin 11 Limited public surface area
Emerging 60 Early or largely undocumented
MadeThisCumulus LabsGemnoteCorveraInsurfBeacon HealthByteportEmdashLemonLimePerseusMemory StoreSkillsyncPentagonYouartAsideInstanceOpenproseImagine AiMemoirRunAnywhereCerenovusSupafaxPatientdesk.aiClara 2NoriCodewispRevionBackerkitSavantFlowscopeZenbu 2CardboardEvalsMoritzClerkyLevel FramesZatannaLinzumiPangoGeneral LegalSweepPrescience IncImperfectFastshotVelvetCentralComsRobbySparklesHyperpadRex IncAvoiceClad LabsGlenInventoryQuantProvenmetalItemSaffronAssemblePolymorphHeyclicky
Minimal 168 Almost no public developer surface
BaseframeVenturaJarminLollipuffAkkariApproximaDiligencesquared IncArdenArzanaTextsidekickJuno ChatLightberryPovioDoomersionAmeraHessianZymblyCare GPLevocred AIManiculeOntoraPrototyping.ioMochacareAnto BiosciencesBrumbyBrightRoomstormZenflowAndustryHaladirRationalSavahqIsengard Industries IncOctavewealthThe Human UtilityAvea RoboticsDonkeyPax HistoriaRealPactInstaAgentKlaimeeSpecific LabsteaBOTTryprismAlchemizeAurorin CADPatent WatchChronicle LabsDeferWalterNumerion LabsDitto BiosciencesLE TOTEAndcoAuxosHex SecurityShotwellaiSynphonyCofiaMaywoodAnoriaEmailioGodHandsOne RobotSpotangelsKinroTraverseAktoria RoboticsBinary ThumbsButter SystemsLab0Perfectbit IncTsumobiArlo IndustriesDaivinFoasterIndustrial MicrobesLeyaMomentusParasmaAICEBrainTrippingLawdingo/dev/fast42Floors6thSense9 Mothers CorporationAdvanced Metal ResearchAemonAeroFSAquaShieldArk.comAtrisaAxelrodCongruentDeep InteractionsDiscovered MaterialsEden RoboticsEverestFabraixFern BotFlirteyForge RoboticsGeneral AviationGeneral InstinctGraft ConceptsGreypoint IndustriesHlabsHomeJoyHop AeroHyper 4Intelligence FactoryLayer By LayerLeanMarketMaquoketa ResearchMarkItMayflowerMillirayMiniswapMolagriNorthO11OctapulseOrnadyneparenthoodsPetrarchPiris LabsProjectxRev1Rise ReformingRudusScreenheroSocialcamStableBrowseStyleupSurtr Defense SystemsTalentplutoTalking ComputersTenet IndustriesThomasWealorZibra LabsFed10Isono HealthSpotPayCosmic RoboticsSubVysionFloraceneMango Medical IncMantisOrigin BioPetcubePlena HealthRitivelShape ShapescaleTerranox AIMountLeaders In TechHuscarlImmunity ProjectLumiusZephyr FusionCatchback CardsFlorinJumpcutProxyEkpaInstinct Xyz
APIs with this tag (1)
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 →
Emerging 1 Early or largely undocumented
Score breakdown
Frequency
66.4
log-scaled weighted occurrences
Breadth
6.9
spread across providers
Quality lift
13.9
mean composite of providers using it
Cohesion
8.0
strength of nearest seed neighbor
Related tags
AI Agents 65 co-occurrences
Robotics 27 co-occurrences
Artificial Intelligence 128 co-occurrences
Automation 27 co-occurrences
Developer Tools 30 co-occurrences
Hardware 24 co-occurrences
Knowledge-Management 8 co-occurrences
Autonomous Systems 7 co-occurrences
Where this tag comes from
Provider tag251
Api tag1
Cohort brief
Auto-generatedThe 252 providers in the APIs.io catalog tagged Y Combinator, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
252
all scored
Mean Kin Score
11.9
-8.8 vs catalog 20.7
Mean Agent Readiness
3.7
-6.0 vs catalog 9.7
Spread
0–61.4
median 7.1 · σ 11.3
How the 252 split by band
Exemplar 0Strong 3Developing 10Thin 11Emerging 60Minimal 168
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Contract Governance | 2.4 | 6.4 | -4 | 252 |
| Discoverability | 55.6 | 60.4 | -4.8 | 252 |
| Access Clarity | 15.2 | 22.3 | -7.1 | 252 |
| Operational Transparency | 3.7 | 11.3 | -7.6 | 252 |
| Developer Ergonomics | 10.1 | 17.9 | -7.8 | 252 |
| Contract Quality | 3.5 | 17.5 | -14 | 252 |
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
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 13% | 16% | -3 |
| MCP server (first-party) | 10% | 7% | +3 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 5% | 9% | -4 |
| Security | 84% | 88% | -4 |
| Arazzo workflows | 0% | 2% | -2 |
| Governance rules | 0% | 13% | -13 |
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 Compresr 61.4
- 2 Insforge 56.4
- 3 VOYGR 55
- 4 The Hog 52.2
- 5 Codag 49.9
- 6 Qomplement 47.2
- 7 CharacterQuilt 46.5
- 8 Amboras 44.9
- 9 Osmaura 44.9
- 10 Karumi 44.1
All 252 members of this roster resolve to a scored provider in
the catalog.Generated from the catalog build of
25 August 2026, across 26891
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
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
This tag
curl "https://apis.io/api/v1/tags/y-combinator"
All tags
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort
curl "https://apis.io/api/v1/cohorts/tag/y-combinator"
The distribution (Pro)
curl "https://apis.io/api/v1/cohorts/tag/y-combinator/stats" \
-H "X-API-Key: $APIS_IO_KEY"Discovery needs no key. Ratings and market analysis are Pro.