Buf Schema Registry (public Protocol Buffers modules, gRPC / ConnectRPC schema publishers)
Register market (public protobuf schema publishers on the buf schema registry). The Kin Score Market layer reads each provider in its market: who it integrates with, how deep those integrations go, and where the market publishes its own structure. Methodology.
Where this market publishes its structure
- BSR Connect API ModuleService/ListModules + OwnerService/GetOwners (buf.build, unauthenticated) machine-readable, 7,592 public modules, 1,759 organizations, 2,336 users; 58 providers linked (22 domain, 36 register-name hand reviewed); 101 org domains unheld by the catalog
- buf.build/explore and buf.build/
pages machine-readable, client-rendered view of the same API data; not scraped separately - BSR OrganizationService/ListOrganizations not machine-readable: requires login (unauthenticated -> 'this action requires you to log in'); owners resolved through GetOwners from module owner ids instead
- buf.build/docs/reference machine-readable, API documentation only, not a register
Own = declares at least one integration itself; covered = visible only because an aggregator, standards body, regulator or partner contract names it; distribution-only = listed only on cloud marketplaces it sells through, a channel reported beside, never counted as its own declared integrations; undeclared = nothing we can read, so no number; declares_compatibility = providers with a `compatible` shape vote, report only (kin, 2026-10-13): never counted as own, never in depth or position.
Taxonomy how this market maps onto apis.io
Derived 2026-10-23 from the 159 providers in this market we could resolve in the catalog. The percentage is the share of those providers carrying each one; it describes the market, not the tag or industry. Tag groups have no page of their own yet, so they are listed unlinked.
| Tags | gRPC 58%, Open Source 29% |
|---|---|
| Tag groups | gRPC 65% |
| Industries | Developer Tools & DevOps 49%, Artificial Intelligence 26% |
| Areas | Observability 11% |
share of resolved cohort carrying it; tags >=0.20 & >=3 members (max 12, junk dropped), tag_groups >=0.20 (cooccurrence, non-cross-cutting; max 8), industries >=0.20 (max 6), areas >=0.10 (max 6; areas are keyword-matched and sparse), capabilities L1 >=0.20 (max 8); derive-market-taxonomy.py
Leaders by position (provisional)
Provisional: grouped by position, depth compared within a position only. Distribution (cloud marketplaces) and iPaaS bridges are counted beside position, never inside it. Unknown-builder listings are left out of position shares and counted here.
gravity 2 · other companies invest to build on it
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Cisco | 68.5 | 161 | 125 / 36 | 0 | 0 | 0 | partner-built 85%, contract 1%, standard 9%, builds-on-platform 5% |
| Grafana | 52.9 | 340 | 187 / 153 | 0 | 3 | 3 | partner-built 62%, provider-built 32%, ipaas-bridge 1%, standard 2%, builds-on-platform 2%, distribution 1% |
builds-on 21 · publishes apps on other platforms' stores
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Planetscale | 54.7 | 18 | 0 / 18 | 1 | 2 | 0 | standard 33%, covered 6%, builds-on-platform 44%, distribution 11%, unknown 6% |
| OpenFGA | 53.9 | 10 | 0 / 10 | 0 | 0 | 0 | standard 40%, builds-on-platform 60% |
| Confluent | 53.7 | 16 | 0 / 16 | 0 | 4 | 1 | ipaas-bridge 6%, standard 31%, builds-on-platform 38%, distribution 25% |
| Apollo GraphQL | 51.8 | 12 | 0 / 12 | 0 | 2 | 0 | standard 33%, builds-on-platform 50%, distribution 17% |
| Postman | 51.8 | 35 | 0 / 35 | 0 | 0 | 12 | ipaas-bridge 43%, standard 18%, builds-on-platform 39% |
| Authzed | 51.3 | 8 | 0 / 8 | 0 | 1 | 0 | standard 38%, builds-on-platform 50%, distribution 12% |
| Ory | 51.1 | 6 | 0 / 6 | 0 | 1 | 0 | standard 33%, builds-on-platform 50%, distribution 17% |
| Cyral | 47.9 | 6 | 0 / 6 | 0 | 1 | 0 | standard 17%, builds-on-platform 67%, distribution 17% |
| Kentik | 47.9 | 6 | 0 / 6 | 0 | 1 | 0 | standard 17%, builds-on-platform 67%, distribution 17% |
| Stack Moxie | 47.6 | 4 | 0 / 4 | 0 | 1 | 0 | standard 25%, builds-on-platform 50%, distribution 25% |
| Plakar | 46.0 | 4 | 0 / 4 | 0 | 1 | 0 | standard 25%, builds-on-platform 50%, distribution 25% |
| OpenStatus | 44.1 | 6 | 0 / 6 | 0 | 1 | 0 | standard 17%, covered 17%, builds-on-platform 50%, distribution 17% |
| SmallStep | 43.1 | 8 | 0 / 8 | 0 | 3 | 0 | standard 12%, builds-on-platform 50%, distribution 38% |
| Buf | 41.5 | 9 | 0 / 9 | 0 | 5 | 0 | standard 10%, builds-on-platform 40%, distribution 50% |
| Kurrent | 41.4 | 8 | 0 / 8 | 0 | 5 | 0 | standard 11%, builds-on-platform 33%, distribution 56% |
| Imandra | 34.5 thin | 2 | 0 / 2 | 0 | 0 | 0 | builds-on-platform 100% |
| Momento | 33.9 | 9 | 0 / 9 | 0 | 7 | 0 | builds-on-platform 22%, distribution 78% |
| Heroic Labs | 26.8 thin | 2 | 0 / 2 | 0 | 1 | 0 | builds-on-platform 50%, distribution 50% |
| Engine | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | builds-on-platform 100% |
| Kreya | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | builds-on-platform 100% |
| Timber | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | builds-on-platform 100% |
coverage 1 · reaches banks, carriers, systems or channels (an aggregator)
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| LiveKit | 47.7 | 46 | 0 / 46 | 0 | 0 | 1 | ipaas-bridge 2%, standard 4%, coverage 91%, builds-on-platform 2% |
covered 3 · reached mainly through aggregators
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Stability AI | 51.7 | 4 | 0 / 4 | 0 | 0 | 0 | standard 25%, covered 50%, builds-on-platform 25% |
| Localytics | 42.1 | 4 | 0 / 4 | 0 | 0 | 1 | ipaas-bridge 25%, covered 50%, builds-on-platform 25% |
| Clarifai | 23.9 | 4 | 0 / 4 | 0 | 1 | 2 | ipaas-bridge 50%, covered 25%, distribution 25% |
regulated 2 · named in a regulator's register or partners' contracts
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Nuance | 43.5 | 4 | 0 / 4 | 0 | 7 | 0 | contract 11%, standard 11%, distribution 78% |
| Zenoss | 37.7 | 4 | 0 / 4 | 0 | 3 | 0 | contract 25%, distribution 75% |
standard 67 · listed by a voluntary standard's own directory
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Dex | 58.1 | 3 | 0 / 3 | 0 | 0 | 0 | standard 67%, builds-on-platform 33% |
| Apicurio | 56.5 | 4 | 0 / 4 | 0 | 0 | 0 | standard 75%, builds-on-platform 25% |
| Jaeger | 56.3 | 5 | 0 / 5 | 0 | 0 | 0 | standard 80%, builds-on-platform 20% |
| OpenFeature | 56.0 | 5 | 0 / 5 | 0 | 0 | 0 | standard 80%, builds-on-platform 20% |
| Zitadel | 54.9 | 6 | 0 / 6 | 0 | 0 | 0 | standard 50%, builds-on-platform 50% |
| Seldon | 54.1 | 4 | 0 / 4 | 0 | 0 | 0 | standard 100% |
| CoreWeave | 53.3 | 9 | 0 / 9 | 0 | 0 | 0 | standard 67%, covered 11%, builds-on-platform 22% |
| gRPC | 52.4 | 3 | 0 / 3 | 0 | 0 | 0 | standard 100% |
| Cerbos | 52.1 | 5 | 0 / 5 | 0 | 0 | 0 | standard 80%, builds-on-platform 20% |
| Temporal | 51.8 | 14 | 0 / 14 | 0 | 3 | 0 | standard 43%, covered 7%, builds-on-platform 29%, distribution 21% |
| Anduril Industries | 51.7 | 3 | 0 / 3 | 0 | 0 | 0 | standard 100% |
| Celestia | 51.7 | 3 | 0 / 3 | 0 | 0 | 0 | standard 67%, builds-on-platform 33% |
| Levelpath | 51.7 | 4 | 0 / 4 | 0 | 0 | 0 | standard 50%, builds-on-platform 50% |
| WunderGraph | 51.7 | 4 | 0 / 4 | 0 | 0 | 0 | standard 50%, builds-on-platform 50% |
| Kubernetes | 51.5 | 8 | 0 / 8 | 0 | 1 | 0 | standard 88%, distribution 12% |
| Crossplane | 50.8 | 4 | 0 / 4 | 0 | 1 | 0 | standard 75%, distribution 25% |
| Istio | 50.3 | 8 | 0 / 8 | 0 | 2 | 0 | standard 62%, builds-on-platform 12%, distribution 25% |
| Weaviate | 49.4 | 14 | 0 / 14 | 0 | 2 | 3 | ipaas-bridge 21%, standard 36%, covered 14%, builds-on-platform 14%, distribution 14% |
| Prometheus | 48.2 | 7 | 0 / 7 | 0 | 0 | 1 | ipaas-bridge 14%, standard 57%, builds-on-platform 29% |
| Bytebase | 47.9 | 6 | 0 / 6 | 0 | 1 | 0 | standard 50%, builds-on-platform 33%, distribution 17% |
| Depot | 47.1 | 5 | 0 / 5 | 0 | 1 | 0 | standard 40%, builds-on-platform 40%, distribution 20% |
| Indykite | 47.1 | 5 | 0 / 5 | 0 | 1 | 0 | standard 40%, builds-on-platform 40%, distribution 20% |
| LanceDB | 47.1 | 5 | 0 / 5 | 0 | 1 | 0 | standard 40%, covered 20%, builds-on-platform 20%, distribution 20% |
| OpenTelemetry | 47.1 | 5 | 0 / 5 | 0 | 1 | 0 | standard 60%, builds-on-platform 20%, distribution 20% |
| Cresta | 44.1 | 3 | 0 / 3 | 0 | 1 | 0 | standard 67%, distribution 33% |
| Datum | 44.1 | 3 | 0 / 3 | 0 | 1 | 0 | standard 67%, distribution 33% |
| Tailor | 44.1 | 3 | 0 / 3 | 0 | 2 | 0 | standard 25%, builds-on-platform 25%, distribution 50% |
| Containerd | 43.8 | 6 | 0 / 6 | 0 | 3 | 0 | standard 50%, distribution 50% |
| Nord Security | 42.8 | 3 | 0 / 3 | 0 | 2 | 0 | standard 33%, distribution 67% |
| OpenX | 42.5 | 5 | 0 / 5 | 0 | 2 | 0 | standard 40%, covered 20%, distribution 40% |
| Xilinx | 40.8 | 4 | 0 / 4 | 0 | 2 | 0 | standard 50%, distribution 50% |
| Instill AI | 40.2 | 4 | 0 / 4 | 0 | 2 | 0 | standard 25%, builds-on-platform 25%, distribution 50% |
| Polar Signals | 40.2 | 4 | 0 / 4 | 0 | 3 | 0 | standard 40%, distribution 60% |
| Gravitee | 37.9 | 18 | 0 / 18 | 0 | 1 | 0 | standard 57%, builds-on-platform 29%, distribution 14% |
| Arduino | 37.3 | 6 | 0 / 6 | 0 | 4 | 0 | standard 33%, distribution 67% |
| AGNTCY | 37.2 | 5 | 0 / 5 | 0 | 4 | 0 | standard 20%, distribution 80% |
| Envoy Gateway | 37.2 thin | 2 | 0 / 2 | 0 | 0 | 0 | standard 100% |
| Akuity | 36.4 | 6 | 0 / 6 | 0 | 4 | 0 | standard 33%, distribution 67% |
| Ava Labs | 36.4 | 3 | 0 / 3 | 0 | 2 | 0 | standard 33%, distribution 67% |
| Vapor IO | 36.4 | 3 | 0 / 3 | 0 | 2 | 0 | standard 33%, distribution 67% |
| Envoy Proxy | 35.1 thin | 2 | 0 / 2 | 0 | 0 | 0 | standard 100% |
| Aserto | 34.5 thin | 2 | 0 / 2 | 0 | 0 | 0 | standard 100% |
| Connect-RPC | 34.5 thin | 2 | 0 / 2 | 0 | 0 | 0 | standard 100% |
| Grafbase | 34.5 thin | 2 | 0 / 2 | 0 | 0 | 0 | standard 50%, builds-on-platform 50% |
| The Guild | 34.5 thin | 2 | 0 / 2 | 0 | 0 | 0 | standard 50%, builds-on-platform 50% |
| Aalyria | 26.8 thin | 2 | 0 / 2 | 0 | 1 | 0 | standard 50%, distribution 50% |
| Defakto Security | 26.8 thin | 2 | 0 / 2 | 0 | 1 | 0 | standard 50%, distribution 50% |
| Einride | 26.8 thin | 2 | 0 / 2 | 0 | 1 | 0 | standard 50%, distribution 50% |
| EngFlow | 26.8 thin | 2 | 0 / 2 | 0 | 1 | 0 | standard 50%, distribution 50% |
| Omni Network | 26.8 thin | 2 | 0 / 2 | 0 | 1 | 0 | standard 50%, distribution 50% |
| Tendermint | 26.8 thin | 2 | 0 / 2 | 0 | 1 | 0 | standard 50%, distribution 50% |
| Bear Robotics | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| CNCF | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Eventual | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Gloo Mesh | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Google Chrome | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Kratos | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Linq.gg | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Motif | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Mythical Games | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Preteckt | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Protocol Buffers | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Provable | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Sommelier | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| SS&C Technologies | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Utilidata | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| XMTP | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
mixed 4 · no single mode dominates
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| HashiCorp | 56.3 | 13 | 0 / 13 | 0 | 0 | 0 | contract 8%, standard 46%, builds-on-platform 46% |
| Scaleway | 52.4 | 12 | 0 / 12 | 0 | 0 | 1 | ipaas-bridge 8%, standard 42%, covered 17%, builds-on-platform 33% |
| Bazel | 44.1 | 3 | 0 / 3 | 0 | 1 | 0 | standard 33%, builds-on-platform 33%, distribution 33% |
| Mysten Labs | 44.1 | 3 | 0 / 3 | 0 | 1 | 0 | standard 33%, builds-on-platform 33%, distribution 33% |
list 1 · a long list on its own page, mostly unevidenced
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Akave | 9.0 | 9 | 0 / 9 | 0 | 0 | 0 | own-page 100% |
distribution 20 · only sells through cloud marketplaces
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Alphaus | 28.8 | 3 | 0 / 3 | 0 | 3 | 0 | distribution 100% |
| Provenance | 28.8 | 3 | 0 / 3 | 0 | 3 | 0 | distribution 100% |
| Aelf | 19.2 thin | 2 | 0 / 2 | 0 | 2 | 0 | distribution 100% |
| Aptos | 19.2 thin | 2 | 0 / 2 | 0 | 2 | 0 | distribution 100% |
| bitdrift | 19.2 thin | 2 | 0 / 2 | 0 | 2 | 0 | distribution 100% |
| Code | 19.2 thin | 2 | 0 / 2 | 0 | 2 | 0 | distribution 100% |
| Eden Network | 19.2 thin | 2 | 0 / 2 | 0 | 2 | 0 | distribution 100% |
| Sift Stack | 19.2 thin | 2 | 0 / 2 | 0 | 2 | 0 | distribution 100% |
| Spacemesh | 19.2 thin | 2 | 0 / 2 | 0 | 2 | 0 | distribution 100% |
| Speechly | 19.2 thin | 2 | 0 / 2 | 0 | 2 | 0 | distribution 100% |
| Actionpower | 9.6 thin | 1 | 0 / 1 | 0 | 1 | 0 | distribution 100% |
| Dronecode Foundation | 9.6 thin | 1 | 0 / 1 | 0 | 1 | 0 | distribution 100% |
| HappyCo | 9.6 thin | 1 | 0 / 1 | 0 | 1 | 0 | distribution 100% |
| Infostellar | 9.6 thin | 1 | 0 / 1 | 0 | 1 | 0 | distribution 100% |
| Lightstream | 9.6 thin | 1 | 0 / 1 | 0 | 1 | 0 | distribution 100% |
| Qpoint | 9.6 thin | 1 | 0 / 1 | 0 | 1 | 0 | distribution 100% |
| Science Corporation | 9.6 thin | 1 | 0 / 1 | 0 | 1 | 0 | distribution 100% |
| SeaweedFS | 9.6 thin | 1 | 0 / 1 | 0 | 1 | 0 | distribution 100% |
| Succinct | 9.6 thin | 1 | 0 / 1 | 0 | 1 | 0 | distribution 100% |
| Tari | 9.6 thin | 1 | 0 / 1 | 0 | 1 | 0 | distribution 100% |
undeclared 38 · declares nothing we can read: no number
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| AgiBot | undeclared | - | - | - | - | - | |
| AI Arena | undeclared | - | - | - | - | - | |
| Apache Arrow | undeclared | - | - | - | - | - | |
| Bayes Impact | undeclared | - | - | - | - | - | |
| Binary Format | undeclared | - | - | - | - | - | |
| Boston Dynamics | undeclared | - | - | - | - | - | |
| Clone | undeclared | - | - | - | - | - | |
| CloudMinds | undeclared | - | - | - | - | - | |
| Confluent Schema Registry | undeclared | - | - | - | - | - | |
| Confluent | the Data Streaming Platform | undeclared | - | - | - | - | - | |
| EigenDA | undeclared | - | - | - | - | - | |
| Ezy | undeclared | - | - | - | - | - | |
| Grpcurl | undeclared | - | - | - | - | - | |
| Hailo | undeclared | - | - | - | - | - | |
| Harmonic GG | undeclared | - | - | - | - | - | |
| HYPERLABS | undeclared | - | - | - | - | - | |
| IQM Quantum Computers | undeclared | - | - | - | - | - | |
| Kitex | undeclared | - | - | - | - | - | |
| Milkman | undeclared | - | - | - | - | - | |
| Nova Labs | undeclared | - | - | - | - | - | |
| Pachyderm | undeclared | - | - | - | - | - | |
| Picarro | undeclared | - | - | - | - | - | |
| Quanergy | undeclared | - | - | - | - | - | |
| Refurbed | undeclared | - | - | - | - | - | |
| Schema Evolution | undeclared | - | - | - | - | - | |
| Streaming | undeclared | - | - | - | - | - | |
| Tailcall | undeclared | - | - | - | - | - | |
| test.ai | undeclared | - | - | - | - | - | |
| Toit | undeclared | - | - | - | - | - | |
| Topl | undeclared | - | - | - | - | - | |
| Triton One | undeclared | - | - | - | - | - | |
| Twirp | undeclared | - | - | - | - | - | |
| TypeSpec | undeclared | - | - | - | - | - | |
| Unto Labs | undeclared | - | - | - | - | - | |
| Verse | undeclared | - | - | - | - | - | |
| Versioning | undeclared | - | - | - | - | - | |
| Viam | undeclared | - | - | - | - | - | |
| Yaak | undeclared | - | - | - | - | - |
Generated 2026-10-24 from API Evangelist's own files; nothing on this page is a model's judgement. Provisional and unweighted; not part of the Kin Score composite or agent readiness. Read the Market layer methodology. Disagree with an edge? Every edge cites its evidence and can be corrected through the normal correction path.