AI Agent Tools (MCP servers, A2A agents)
Frontier, a protocol directory (mcp registry) beside providers' own declarations, with mediation by gateways. 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
- Official MCP Registry /v0/servers (verified reverse-DNS namespace = publisher domain) machine-readable
- a2aregistry.org /api/agents machine-readable
- Catalog mcp/*-mcp.yml and a2a/*-a2a.yml (providers' own surfaces, harvested) machine-readable
- Smithery, Glama, mcp.so, Composio, Zapier MCP, Pipedream catalogs not machine-readable: reported as mediation from the registry only; their own catalogs not swept
- io.github.* registry namespaces (62.6% of servers) not machine-readable: GitHub-login verified, no domain; linked only by a non-shared remote domain
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 46 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 | MCP 22% |
|---|---|
| Tag groups | MCP 39% |
| Industries | Developer Tools & DevOps 41%, Artificial Intelligence 35%, Data & Analytics 28%, Cybersecurity & Identity 22% |
| Areas | Workflow Automation 17%, AI Automation 15%, Observability 11%, Monitoring 11% |
| Capabilities | Cybersecurity Management 50%, Developer Platform & API Ecosystem Management 41%, Software Release & Deployment Management 26% |
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 6 · other companies invest to build on it
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Stripe | 70.6 | 959 | 819 / 140 | 0 | 11 | 37 | partner-built 89%, provider-built 2%, ipaas-bridge 4%, contract 2%, standard 1%, builds-on-platform 1%, distribution 1% |
| Salesforce | 65.3 | 459 | 366 / 93 | 0 | 1 | 36 | partner-built 78%, provider-built 6%, ipaas-bridge 7%, contract 2%, standard 1%, covered 5%, builds-on-platform 1% |
| HubSpot | 59.9 | 438 | 342 / 96 | 0 | 6 | 37 | partner-built 78%, provider-built 8%, ipaas-bridge 8%, contract 2%, covered 1%, builds-on-platform 1%, distribution 1% |
| Plaid | 52.9 | 59 | 0 / 59 | 0 | 6 | 2 | partner-built 72%, ipaas-bridge 3%, contract 5%, standard 8%, builds-on-platform 2%, distribution 10% |
| GitHub | 51.8 | 177 | 143 / 34 | 0 | 0 | 30 | partner-built 80%, provider-built 1%, ipaas-bridge 17%, standard 1%, builds-on-platform 1% |
| GitHub Actions | 51.8 | 201 | 200 / 1 | 0 | 0 | 0 | partner-built 100% |
builds-on 13 · publishes apps on other platforms' stores
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Dynatrace | 58.7 | 33 | 0 / 33 | 0 | 8 | 0 | contract 6%, standard 24%, builds-on-platform 45%, distribution 24% |
| LaunchDarkly | 55.2 | 43 | 0 / 43 | 0 | 10 | 5 | ipaas-bridge 12%, contract 5%, standard 7%, covered 12%, builds-on-platform 42%, distribution 23% |
| Harness | 54.3 | 23 | 0 / 23 | 0 | 4 | 2 | ipaas-bridge 9%, standard 26%, builds-on-platform 48%, distribution 17% |
| Algolia | 54.2 | 47 | 0 / 47 | 0 | 12 | 14 | own-page 10%, ipaas-bridge 29%, standard 4%, covered 4%, builds-on-platform 27%, distribution 25% |
| Airwallex | 54.0 | 50 | 0 / 50 | 0 | 4 | 31 | ipaas-bridge 67%, contract 9%, builds-on-platform 15%, distribution 9% |
| Confluent | 53.7 | 16 | 0 / 16 | 0 | 4 | 1 | ipaas-bridge 6%, standard 31%, builds-on-platform 38%, distribution 25% |
| LogicMonitor | 53.2 | 21 | 0 / 21 | 0 | 6 | 0 | standard 24%, builds-on-platform 48%, distribution 29% |
| Sentry | 52.1 | 31 | 0 / 31 | 0 | 13 | 4 | ipaas-bridge 12%, standard 9%, covered 6%, builds-on-platform 33%, distribution 39% |
| Postman | 51.8 | 35 | 0 / 35 | 0 | 0 | 12 | ipaas-bridge 43%, standard 18%, builds-on-platform 39% |
| Tray.ai | 50.8 | 4 | 0 / 4 | 0 | 1 | 0 | standard 25%, builds-on-platform 50%, distribution 25% |
| Kinde | 42.5 | 5 | 0 / 5 | 0 | 2 | 0 | standard 20%, builds-on-platform 40%, distribution 40% |
| CData | 38.6 | 7 | 0 / 7 | 0 | 4 | 0 | builds-on-platform 43%, distribution 57% |
| JobsPipe | 30.8 | 3 | 0 / 3 | 0 | 1 | 1 | ipaas-bridge 33%, builds-on-platform 33%, distribution 33% |
coverage 2 · reaches banks, carriers, systems or channels (an aggregator)
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Infobip | 54.2 | 64 | 0 / 64 | 0 | 6 | 34 | ipaas-bridge 53%, standard 6%, coverage 19%, covered 2%, builds-on-platform 11%, distribution 9% |
| GitLab | 52.7 | 82 | 0 / 82 | 0 | 0 | 30 | ipaas-bridge 37%, contract 1%, standard 6%, coverage 48%, builds-on-platform 7% |
covered 1 · reached mainly through aggregators
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Snowflake | 59.7 | 178 | 0 / 178 | 0 | 107 | 36 | ipaas-bridge 20%, contract 2%, standard 3%, covered 11%, builds-on-platform 6%, distribution 58% |
standard 5 · listed by a voluntary standard's own directory
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Redocly | 51.7 | 4 | 0 / 4 | 0 | 0 | 0 | standard 50%, builds-on-platform 50% |
| Acronis | 48.7 | 12 | 0 / 12 | 0 | 4 | 1 | ipaas-bridge 8%, standard 31%, builds-on-platform 31%, distribution 31% |
| OutSystems | 41.2 | 9 | 0 / 9 | 0 | 6 | 0 | contract 10%, standard 20%, builds-on-platform 10%, distribution 60% |
| Xquik | 33.3 | 6 | 0 / 6 | 0 | 2 | 2 | ipaas-bridge 33%, standard 17%, builds-on-platform 17%, distribution 33% |
| Nylas | 23.9 | 4 | 0 / 4 | 0 | 1 | 2 | ipaas-bridge 50%, standard 25%, distribution 25% |
core 1 · builds the connectors its customers need
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Ada | 46.0 | 20 | 0 / 20 | 0 | 4 | 1 | provider-built 55%, ipaas-bridge 5%, standard 10%, builds-on-platform 10%, distribution 20% |
mixed 10 · no single mode dominates
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Cloudflare | 61.4 | 34 | 0 / 34 | 1 | 5 | 0 | contract 12%, standard 29%, covered 15%, builds-on-platform 26%, distribution 15%, unknown 3% |
| MongoDB | 58.0 | 28 | 0 / 28 | 0 | 3 | 5 | ipaas-bridge 18%, contract 7%, standard 25%, covered 11%, builds-on-platform 29%, distribution 11% |
| Twilio | 57.7 | 68 | 0 / 68 | 0 | 5 | 36 | ipaas-bridge 56%, contract 6%, standard 6%, coverage 9%, covered 3%, builds-on-platform 11%, distribution 8% |
| Brevo | 55.8 | 67 | 0 / 67 | 0 | 5 | 6 | provider-built 17%, own-page 31%, ipaas-bridge 9%, agent-tooling 24%, standard 1%, covered 3%, builds-on-platform 7%, distribution 7% |
| OpenAI | 55.6 | 73 | 0 / 73 | 1 | 6 | 35 | ipaas-bridge 49%, contract 4%, standard 10%, covered 17%, builds-on-platform 10%, distribution 8%, unknown 1% |
| Snyk | 55.2 | 26 | 0 / 26 | 0 | 4 | 1 | ipaas-bridge 4%, contract 7%, standard 37%, builds-on-platform 37%, distribution 15% |
| ElevenLabs | 53.0 | 25 | 0 / 25 | 1 | 4 | 3 | ipaas-bridge 12%, contract 4%, standard 19%, covered 23%, builds-on-platform 23%, distribution 15%, unknown 4% |
| Telnyx | 51.2 | 20 | 0 / 20 | 0 | 5 | 3 | provider-built 14%, ipaas-bridge 14%, standard 10%, coverage 10%, covered 10%, builds-on-platform 19%, distribution 24% |
| Customer.io | 43.8 | 24 | 0 / 24 | 0 | 4 | 5 | own-page 36%, ipaas-bridge 20%, covered 12%, builds-on-platform 16%, distribution 16% |
| Appwrite | 31.0 | 11 | 0 / 11 | 0 | 9 | 1 | ipaas-bridge 8%, standard 8%, covered 8%, distribution 75% |
list 2 · a long list on its own page, mostly unevidenced
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| ZoomInfo | 55.6 | 224 | 0 / 224 | 0 | 5 | 31 | own-page 80%, ipaas-bridge 13%, standard 1%, builds-on-platform 3%, distribution 2% |
| Optimizely | 52.8 | 358 | 0 / 358 | 0 | 6 | 2 | own-page 93%, ipaas-bridge 1%, standard 1%, covered 1%, builds-on-platform 4%, distribution 2% |
distribution 4 · only sells through cloud marketplaces
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Microsoft Entra ID (formerly Azure AD) | 28.8 | 3 | 0 / 3 | 0 | 3 | 0 | distribution 100% |
| Agoragentic | 19.2 thin | 2 | 0 / 2 | 0 | 3 | 0 | distribution 100% |
| AhaSend | 19.2 thin | 2 | 0 / 2 | 0 | 2 | 0 | distribution 100% |
| Losant | 19.2 thin | 2 | 0 / 2 | 0 | 3 | 0 | distribution 100% |
undeclared 2 · declares nothing we can read: no number
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| APIs.io | undeclared | - | - | - | - | - | |
| Datadog APM | undeclared | - | - | - | - | - |
Frontier timeline DRAFT · report only — not weighted
2026-10-14 anchor shape: mcp
2026-10-15 anchor shape: mcp
2026-10-17 anchor shape: mcp
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.