Markets · bedrock market · provisional
Accelerator Portfolios (Y Combinator, 500 Global, Antler participation)
Participation register market (accelerator cohort / portfolio listings). 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.
75providers measured
41 (54.7%)declare their own
26 (34.7%)covered by others only
1 (1.3%)distribution only (sell through, not integrations)
7 (9.3%)undeclared
22declare compatibility (report only, not weighted)
15in-market workflows shown
Provisional. Provisional and unweighted: the Market layer is not part of the composite or agent readiness. Leader lists are read within a position, never as one ranking. A provider that declares nothing we can
read is shown as undeclared, with no number: we never infer integrations.
Where this market publishes its structure
- Y Combinator company pages (ycombinator.com/companies/
, page's own data-page JSON) machine-readable, 873 company pages read (839 slugs from the catalog's y-combinator portfolio file + tag-pool repo slugs); 870 with a website; 704 providers linked by domain - Y Combinator directory search (ycombinator.com/companies listing, Algolia) not machine-readable: driven by a time-limited Algolia secured key embedded in the page (an embedded access token); not used
- 500 Global portfolio (500.co/companies -> 500.co/api/startups, the page's own public JSON) machine-readable, 2,241 companies, 2,176 with a website; 1,661 providers linked; 4 LP fund rows held
- Antler portfolio (antler.co/portfolio, Webflow list ?0b933bfd_page=N) machine-readable, 1,096 companies, 1,076 with a website; 29 providers linked (mostly pre-seed, not in the catalog)
- Techstars portfolio search (techstars.com/portfolio) not machine-readable: Typesense multi_search with an API key embedded in the page (embedded access token); not used. Server HTML carries only the 29-company unicorn registry as logos
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 2026-10-21 from the 75 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 27% |
|---|---|
| Tag groups | MCP 39%, E-Commerce 20% |
| Industries | Artificial Intelligence 39%, Marketing & Advertising 32% |
| Capabilities | BC-4270 27% |
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 3 · other companies invest to build on it
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Stripe | 70.6 | 931 | 802 / 129 | 0 | 8 | 36 | partner-built 90%, provider-built 3%, ipaas-bridge 4%, contract 2%, standard 1%, builds-on-platform 1%, distribution 1% |
| drchrono | 54.8 | 48 | 43 / 5 | 0 | 0 | 0 | partner-built 90%, contract 4%, standard 6% |
| Doordash | 51.8 | 27 | 22 / 5 | 0 | 2 | 0 | partner-built 81%, standard 4%, covered 4%, builds-on-platform 4%, distribution 7% |
builds-on 9 · publishes apps on other platforms' stores
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| LaunchDarkly | 53.9 | 33 | 0 / 33 | 0 | 6 | 5 | ipaas-bridge 15%, contract 3%, standard 6%, covered 12%, builds-on-platform 45%, distribution 18% |
| CircleCI | 53.0 | 21 | 0 / 21 | 0 | 2 | 6 | ipaas-bridge 29%, contract 5%, standard 14%, builds-on-platform 43%, distribution 10% |
| Lucid | 52.7 | 6 | 0 / 6 | 0 | 0 | 0 | contract 17%, standard 17%, builds-on-platform 67% |
| Sentry | 52.1 | 23 | 0 / 23 | 0 | 9 | 4 | ipaas-bridge 16%, standard 16%, covered 4%, builds-on-platform 28%, distribution 36% |
| Benchling | 46.0 | 4 | 0 / 4 | 0 | 1 | 0 | standard 25%, builds-on-platform 50%, distribution 25% |
| Mux | 35.2 | 8 | 0 / 8 | 0 | 0 | 3 | ipaas-bridge 38%, standard 25%, builds-on-platform 38% |
| Go1 | 27.1 | 31 | 0 / 31 | 0 | 1 | 27 | ipaas-bridge 87%, standard 3%, builds-on-platform 6%, distribution 3% |
| Gameball | 26.5 | 23 | 0 / 23 | 0 | 3 | 16 | ipaas-bridge 73%, standard 5%, builds-on-platform 9%, distribution 14% |
| Malt | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | builds-on-platform 100% |
coverage 2 · reaches banks, carriers, systems or channels (an aggregator)
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Zapier | 54.2 | 1354 | 0 / 1354 | 0 | 0 | 2 | coverage 99%, builds-on-platform 1% |
| GitLab | 50.6 | 79 | 0 / 79 | 0 | 0 | 30 | ipaas-bridge 39%, standard 3%, coverage 51%, builds-on-platform 8% |
covered 1 · reached mainly through aggregators
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Iterable | 44.8 | 44 | 0 / 44 | 0 | 3 | 35 | ipaas-bridge 78%, standard 2%, covered 9%, builds-on-platform 4%, distribution 7% |
standard 41 · listed by a voluntary standard's own directory
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Didit | 43.4 | 3 | 0 / 3 | 0 | 0 | 1 | ipaas-bridge 33%, standard 67% |
| S2 Dev | 40.7 | 4 | 0 / 4 | 0 | 2 | 0 | standard 50%, distribution 50% |
| Kondukto | 40.2 | 4 | 0 / 4 | 0 | 2 | 0 | standard 50%, distribution 50% |
| InfluxData | 38.0 | 5 | 0 / 5 | 0 | 3 | 0 | standard 40%, distribution 60% |
| Compresr | 36.4 | 3 | 0 / 3 | 0 | 2 | 0 | standard 33%, distribution 67% |
| Flexpa | 35.3 | 4 | 0 / 4 | 0 | 1 | 0 | own-page 25%, standard 50%, distribution 25% |
| Erply | 34.9 | 4 | 0 / 4 | 0 | 1 | 1 | ipaas-bridge 25%, standard 25%, builds-on-platform 25%, distribution 25% |
| Caretta | 34.5 thin | 2 | 0 / 2 | 0 | 0 | 0 | standard 50%, builds-on-platform 50% |
| FlowAccount | 34.5 thin | 2 | 0 / 2 | 0 | 0 | 0 | standard 50%, builds-on-platform 50% |
| Improvado | 34.5 thin | 2 | 0 / 2 | 0 | 0 | 0 | standard 50%, builds-on-platform 50% |
| ReadMe | 34.5 thin | 2 | 0 / 2 | 0 | 0 | 0 | standard 50%, builds-on-platform 50% |
| Zavu | 34.5 | 4 | 0 / 4 | 0 | 3 | 0 | standard 25%, distribution 75% |
| Unbounce | 34.0 | 5 | 0 / 5 | 0 | 0 | 2 | ipaas-bridge 40%, standard 40%, builds-on-platform 20% |
| Dropbox Sign (HelloSign) | 33.7 | 5 | 0 / 5 | 0 | 2 | 1 | ipaas-bridge 20%, standard 20%, builds-on-platform 20%, distribution 40% |
| Webflow | 31.8 | 41 | 0 / 41 | 0 | 0 | 35 | ipaas-bridge 90%, standard 5%, covered 3%, builds-on-platform 3% |
| GetAccept | 29.6 | 4 | 0 / 4 | 0 | 0 | 2 | ipaas-bridge 50%, standard 25%, builds-on-platform 25% |
| Contently | 29.3 | 3 | 0 / 3 | 0 | 1 | 1 | ipaas-bridge 33%, standard 33%, distribution 33% |
| Context.dev | 29.1 | 5 | 0 / 5 | 0 | 3 | 1 | ipaas-bridge 20%, standard 20%, distribution 60% |
| Boom Ai | 26.8 thin | 2 | 0 / 2 | 0 | 1 | 0 | standard 50%, distribution 50% |
| Codag | 26.8 thin | 2 | 0 / 2 | 0 | 1 | 0 | standard 50%, distribution 50% |
| Insforge | 26.8 thin | 2 | 0 / 2 | 0 | 1 | 0 | standard 50%, distribution 50% |
| Openwork | 26.8 thin | 2 | 0 / 2 | 0 | 1 | 0 | standard 50%, distribution 50% |
| Revnu | 26.8 thin | 2 | 0 / 2 | 0 | 2 | 0 | standard 33%, distribution 67% |
| VOYGR | 26.8 thin | 2 | 0 / 2 | 0 | 2 | 0 | standard 33%, distribution 67% |
| Sendspark | 22.2 | 3 | 0 / 3 | 0 | 0 | 2 | ipaas-bridge 67%, standard 33% |
| Lucidya | 21.5 | 3 | 0 / 3 | 0 | 0 | 2 | ipaas-bridge 67%, standard 33% |
| Amboras | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Argyle | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| CharacterQuilt | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Cvent Social Tables | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Karumi | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Keyframe Labs | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Kita | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Ottimate | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Palenca (Vech) | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Ploy | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| Rentahuman | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| RightNow AI | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| ShortKit | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| The Hog | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| UserGems | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
core 1 · builds the connectors its customers need
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Deel | 47.1 | 38 | 0 / 38 | 17 | 0 | 3 | provider-built 42%, ipaas-bridge 8%, standard 5%, unknown 45% |
mixed 7 · no single mode dominates
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Twilio | 54.6 | 66 | 0 / 66 | 0 | 4 | 36 | ipaas-bridge 60%, contract 5%, standard 5%, coverage 10%, covered 3%, builds-on-platform 10%, distribution 7% |
| Algolia | 54.2 | 41 | 0 / 41 | 0 | 9 | 14 | own-page 12%, ipaas-bridge 33%, standard 10%, covered 5%, builds-on-platform 19%, distribution 21% |
| SendGrid | 49.3 | 49 | 0 / 49 | 0 | 4 | 36 | ipaas-bridge 75%, contract 4%, standard 2%, covered 8%, builds-on-platform 2%, distribution 8% |
| OneSignal | 48.3 | 44 | 0 / 44 | 0 | 3 | 34 | ipaas-bridge 77%, standard 2%, covered 7%, builds-on-platform 7%, distribution 7% |
| Instacart | 44.1 | 3 | 0 / 3 | 0 | 1 | 0 | standard 33%, builds-on-platform 33%, distribution 33% |
| Talkable | 38.9 | 5 | 0 / 5 | 0 | 1 | 1 | ipaas-bridge 20%, standard 20%, covered 20%, builds-on-platform 20%, distribution 20% |
| Paystack | 30.6 | 41 | 0 / 41 | 0 | 0 | 34 | ipaas-bridge 87%, contract 5%, standard 3%, builds-on-platform 5% |
list 2 · a long list on its own page, mostly unevidenced
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Optimizely | 52.8 | 348 | 0 / 348 | 0 | 3 | 2 | own-page 95%, ipaas-bridge 1%, standard 1%, covered 1%, builds-on-platform 2%, distribution 1% |
| Paubox | 23.6 | 7 | 0 / 7 | 0 | 4 | 0 | own-page 38%, standard 12%, distribution 50% |
long-tail 1 · reached only through iPaaS bridges
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| 99designs | 2.5 thin | 1 | 0 / 1 | 0 | 0 | 1 | ipaas-bridge 100% |
distribution 1 · only sells through cloud marketplaces
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Qomplement | 19.2 thin | 2 | 0 / 2 | 0 | 2 | 0 | distribution 100% |
undeclared 7 · declares nothing we can read: no number
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| akta.pro | undeclared | - | - | - | - | - | |
| Contra | undeclared | - | - | - | - | - | |
| Ultravioleta DAO | undeclared | - | - | - | - | - | |
| handy | undeclared | - | - | - | - | - | |
| Osmaura | undeclared | - | - | - | - | - | |
| Rollee | undeclared | - | - | - | - | - | |
| Work Market | undeclared | - | - | - | - | - |
Top workflows by market votes
Workflows (Arazzo) and their phrasing are generated by API Evangelist, ranked by market votes (integration edges in the graph, weighted by channel).
In-market workflows only: a step on the market provider's side maps to this market's business capabilities (), and the partner is not a generic export/notify app. Other workflows are counted as bridges (including any whose steps do not resolve to a capability yet). Methodology. In-market: 75; bridges: 0.
| Workflow | Between | Votes | Weighted | Arazzo |
|---|---|---|---|---|
| Push Stripe successful charges as HubSpot deals When a Stripe charge succeeds, look up the matching HubSpot Contact and create a Closed Won HubSpot Deal with the charge amount and currency. |
Stripe ↔ HubSpot | 2 | 2.0 | workflow generated by API Evangelist |
| Sync Stripe customers into Salesforce contacts When a Stripe customer is created, look them up by email and create the matching Salesforce Contact with billing details. |
Stripe ↔ Salesforce | 2 | 2.0 | workflow generated by API Evangelist |
| Replace WooCommerce Stripe plugin with declarative integration List WooCommerce store orders and create a matching Stripe payment intent for a selected order's total and currency. |
Stripe ↔ WooCommerce | 2 | 1.9 | workflow generated by API Evangelist |
| commercetools |
Algolia ↔ commercetools | 3 | 1.8 | workflow generated by API Evangelist |
| Get Slack notifications for new Stripe sales Get Slack notifications for new Stripe sales |
Stripe ↔ Slack | 3 | 1.8 | workflow generated by API Evangelist |
| Post Stripe payment alerts to Slack channels Retrieve a Stripe charge and post a payment alert to a designated Slack channel. |
Stripe ↔ Slack | 3 | 1.8 | workflow generated by API Evangelist |
| Post failed Stripe payments to Slack Post failed Stripe payments to Slack |
Stripe ↔ Slack | 3 | 1.8 | workflow generated by API Evangelist |
| Add Stripe Checkout completers to a Mailchimp audience When a Stripe Checkout session completes, subscribe the buyer to a Mailchimp audience with plan and MRR merge tags. |
Stripe ↔ Mailchimp | 2 | 1.4 | workflow generated by API Evangelist |
| Add new Stripe customers to Mailchimp lists Add new Stripe customers to Mailchimp lists |
Stripe ↔ Mailchimp | 2 | 1.4 | workflow generated by API Evangelist |
| Attach Stripe customer history to Zendesk tickets On ticket open, fetch the requester's Stripe customer and recent charges and open a Zendesk ticket enriched with that billing history. |
Stripe ↔ Zendesk | 2 | 1.4 | workflow generated by API Evangelist |
| Create Xero invoices for new Stripe payments Create Xero invoices for new Stripe payments |
Stripe ↔ Xero | 2 | 1.4 | workflow generated by API Evangelist |
| File Stripe sales through TaxJar Sync paid Stripe invoices to TaxJar as order transactions for automated sales tax filing. |
Stripe ↔ TaxJar | 2 | 1.4 | workflow generated by API Evangelist |
| Reconcile Stripe payouts in Xero bank transactions List Stripe payouts and create matching Xero bank transactions for reconciliation. |
Stripe ↔ Xero | 2 | 1.4 | workflow generated by API Evangelist |
| Sync BigCommerce orders to Stripe payments For a BigCommerce storefront order, materialize the matching Stripe PaymentIntent so financial reporting consolidates in Stripe. |
Stripe ↔ BigCommerce | 2 | 1.4 | workflow generated by API Evangelist |
| Sync Stripe trial-end events to Iterable Retrieve a Stripe subscription nearing trial end and track it as a custom user event in Iterable to trigger conversion campaigns. |
Stripe ↔ Iterable | 2 | 1.4 | workflow generated by API Evangelist |
Generated 2026-10-21 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.