ActEvolve Inc. (株式会社ActEvolve) was a Tokyo virtual-reality entertainment company incorporated on 9 August 2017 by Takuya Kato, a former Capcom game developer, together with other ex-game-industry engineers. In November 2018 it launched VARK, a VR live platform on which VTuber and virtual-artist performances — most visibly the long-running "Cinderella switch" series with hololive — were staged as ticketed, seat-based concerts for Meta Quest, Android and iOS, paid for with in-app VARK Coin. The company took strategic investment from KLab Inc. in August 2019, renamed itself VARK Inc. (株式会社VARK) on 1 May 2020 alongside a roughly ¥200M round from ANRI, raised a further ¥600M in May 2021, and diversified into the VARK SHORTS 3D animation tool and the STAR BLOOM liver-management agency, producing metaverse events for ANYCOLOR, Avex, KADOKAWA, COVER, Dwango, Shochiku and Meta. VARK was a consumer entertainment app rather than a platform business: it never operated a developer program, and no public API, SDK, webhook catalogue or machine-readable specification (OpenAPI, AsyncAPI, GraphQL SDL, MCP manifest, agent card) was published on any of its hosts at any point — 1,812 archived URLs across vark.co.jp and its subdomains contain no /api, /developers, /docs, /openapi or /graphql path of any kind. The VARK metaverse service shut down on 4 March 2024 with same-day notice, refunding unused VARK Coin until 5 May 2024 under Japan's Payment Services Act; the free tier of VARK SHORTS ended on 30 September 2024; and in March 2025 the entire company was sold in an all-share transaction whose acquirer and terms were kept confidential, with founder Takuya Kato stepping down as representative director. This profile is retained as a historical record — there is no API surface to enrich.
ActEvolve is profiled on the APIs.io network. Tagged areas include Company, Defunct, Acquired, Virtual Reality, and Metaverse.
Regulatory Posture applies to this provider. Its tags matched the
Horizontal (data, software, accessibility, platform) regime, so
Regulatory Posture carries 15 points of the composite.
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applicability map is public and we will correct it.
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for
this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero:
never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and
several others — scorable at all.
The six quality facets above are damped to 85 points between them,
because the conditional facet above carries the other
15. That is why each facet's contribution is shown against a damped
maximum: raising a quality facet moves the composite by 85% of its nominal
weight, not 100%. The full arithmetic is at apis.io/rating/.
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Agent readiness — checks not met, largest first (exact, from this profile):
Machine-Readable Auth+10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency+9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics+8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
13 more unmet checks in the Agent Readiness table above.
Kin Score — facets with the most composite points still available (weight × headroom):
The Kin Score Market layer reads a provider inside its market:
its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted:
not part of the Kin Score or agent readiness.
Registered MCP server and declares compatibility are report only — not weighted.
Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
aid: actevolve
name: ActEvolve
description: 'ActEvolve Inc. (株式会社ActEvolve) was a Tokyo virtual-reality entertainment company incorporated on 9 August 2017
by Takuya Kato, a former Capcom game developer, together with other ex-game-industry engineers. In November 2018 it launched
VARK, a VR live platform on which VTuber and virtual-artist performances — most visibly the long-running "Cinderella switch"
series with hololive — were staged as ticketed, seat-based concerts for Meta Quest, Android and iOS, paid for with in-app
VARK Coin. The company took strategic investment from KLab Inc. in August 2019, renamed itself VARK Inc. (株式会社VARK) on 1
May 2020 alongside a roughly ¥200M round from ANRI, raised a further ¥600M in May 2021, and diversified into the VARK SHORTS
3D animation tool and the STAR BLOOM liver-management agency, producing metaverse events for ANYCOLOR, Avex, KADOKAWA, COVER,
Dwango, Shochiku and Meta. VARK was a consumer entertainment app rather than a platform business: it never operated a developer
program, and no public API, SDK, webhook catalogue or machine-readable specification (OpenAPI, AsyncAPI, GraphQL SDL, MCP
manifest, agent card) was published on any of its hosts at any point — 1,812 archived URLs across vark.co.jp and its subdomains
contain no /api, /developers, /docs, /openapi or /graphql path of any kind. The VARK metaverse service shut down on 4 March
2024 with same-day notice, refunding unused VARK Coin until 5 May 2024 under Japan''s Payment Services Act; the free tier
of VARK SHORTS ended on 30 September 2024; and in March 2025 the entire company was sold in an all-share transaction whose
acquirer and terms were kept confidential, with founder Takuya Kato stepping down as representative director. This profile
is retained as a historical record — there is no API surface to enrich.'
url: https://raw.githubusercontent.com/api-evangelist/actevolve/refs/heads/main/apis.yml
accessModel:
pricing: unknown
onboarding: unknown
trial: false
try_now: false
public: false
label: Unknown
confidence: low
probe_state: none
source: []
generated: '2026-11-06'
method: derived
image: https://web.archive.org/web/20250209054433id_/https://corp.vark.co.jp/wp-content/themes/vark/assets/images/common/logo.svg
x-image-note: 'The company logo is served only from the Wayback Machine''s 2025-02-09 capture of the now-offline corporate
site; the live origin publishes no address record. Verified 2026-09-06: HTTP 200, image/svg+xml, 32,782 bytes.'
x-type: company
x-source: harvest:secondary-market
x-harvest-source-url: https://equityzen.com/company/actevolve/
x-tier: stub
x-tier-reason: defunct-no-api-surface
x-status: defunct
x-founded: '2017-08-09'
x-renamed:
date: '2020-05-01'
from: 株式会社ActEvolve (ActEvolve Inc.)
to: 株式会社VARK (VARK Inc.)
source: https://corp.vark.co.jp/company
x-shutdown-date: '2024-03-04'
x-shutdown-note: The VARK entertainment-metaverse service was announced and terminated the same day, 4 March 2024, with unused
VARK Coin refundable until 5 May 2024 under Japan's Payment Services Act. VARK SHORTS lost its free tier on 30 September
2024. In March 2025 all shares in the company were transferred to an undisclosed buyer and the founder stepped down; the
surviving entity says it will pursue new service development and consulting.
x-domain-status: offline
x-domain-note: vark.co.jp is still registered to 株式会社VARK at JPRS (created 2018-09-10, Connected through 2026-09-30, record
last updated 2025-10-17) and actevolve.com is still registered via GoDaddy on Route 53 name servers (created 2017-05-31,
expiring 2027-05-31), but neither zone publishes an A, AAAA or CNAME record for any web hostname — authoritative queries
return NOERROR/NODATA and curl exits 6 on every request. The vark.co.jp SOA serial decodes to 2025-03-06, the month the
sale closed, and the only surviving record is an MX pointing at Google Workspace. corp.vark.co.jp (the corporate site) was
last captured by the Wayback Machine on 2025-02-09. No host is wired as a Website pointer because none of them serves anything,
and the EquityZen page this company was harvested from is a trading venue's listing, not a company web presence (roadmap#56).
specificationVersion: '0.20'
created: '2026-09-06'
modified: '2026-09-06'
tags:
- Company
- Defunct
- Acquired
- Virtual Reality
- Metaverse
- Entertainment
- Live Events
- VTuber
- Consumer
- Japan
tags_raw:
- Company
- Defunct
- Acquired
- Virtual Reality
- Metaverse
- Entertainment
- Live Events
- VTuber
- Consumer
- Japan
apis: []
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
- FN: APIs.json
email: info@apis.io
common: []
x-coverage:
state: none
reason: defunct
detail: ActEvolve/VARK shut its VR platform down on 4 March 2024 and was sold outright in March 2025; vark.co.jp, corp.vark.co.jp
and actevolve.com are all still registered to the company but publish no A/AAAA/CNAME record, so curl exits 6 ("could
not resolve host") before any HTTP request can be made, and 1,812 archived URLs from when the sites were live contain
no /api, /developers or specification path of any kind.
evidence:
- url: https://vark.co.jp/
status: 0
- url: https://corp.vark.co.jp/company
status: 0
- url: https://actevolve.com/
status: 0
- url: https://play.google.com/store/apps/details?id=jp.actevolve.vrpf_sp
status: 404
- url: https://pypi.org/pypi/actevolve/json
status: 404
- url: https://registry.npmjs.org/-/v1/search?text=actevolve
status: 200
- url: https://equityzen.com/company/actevolve/
status: 200
checked: '2026-09-06'
x-enrichment:
date: '2026-09-06'
status: nochange
artifacts_added: 1
pass: local-v3
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