550wai-cn

550W AI (550W AI实验室) provides AI‑powered tools for content creators to automatically remove subtitles from videos, erase watermarks from images and videos, compress images, and more. The platform offers a public Open API that enables developers to integrate subtitle removal, watermark removal, image compression, asynchronous task polling, and webhook callbacks into their applications. Services are accessible via web, WeChat mini‑program, and desktop clients for macOS and Windows, supporting both single‑image and batch processing with before‑after comparison and automated workflows.

550wai-cn is listed with 1 API on the APIs.io network. Tagged areas include AI, VideoProcessing, ImageProcessing, WatermarkRemoval, and SubtitleRemoval.

550wai-cn’s developer surface includes authentication, documentation, API reference, getting-started guide, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

16.0/100 emerging Agent 18/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 API

AIVideoProcessingImageProcessingWatermarkRemovalSubtitleRemoval

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 16.0/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 8.4 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 5.8 / 9

Regulatory Posture 1.6 / 15

Agent readiness — 18/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

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. If this regime is wrong for your business, say so on your provider repo — the 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 Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

9 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points
Access Clarity scores 0.0 — up to +20.0 composite points
Operational Transparency scores 0.0 — up to +13.0 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/550wai-cn/apis.yml: open an issue on github.com/api-evangelist/550wai-cn to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

550W AI Open API

Public Open API for subtitle removal, watermark removal, image compression, async tasks and webhooks.

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

550Wai Cn Authentication

2 schemes

SECURITY

550Wai Cn Domain Security

TLSv1.3 · DNSSEC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conventions

Conventions

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Leadership

Leadership

Source (apis.yml)

aid: 550wai-cn
name: 550wai-cn
description: 550W AI (550W AI实验室) provides AI‑powered tools for content creators to automatically remove subtitles from videos,
  erase watermarks from images and videos, compress images, and more. The platform offers a public Open API that enables developers
  to integrate subtitle removal, watermark removal, image compression, asynchronous task polling, and webhook callbacks into
  their applications. Services are accessible via web, WeChat mini‑program, and desktop clients for macOS and Windows, supporting
  both single‑image and batch processing with before‑after comparison and automated workflows.
image: https://www.550wai.cn/static2/og_cover.jpg
url: https://artifacts.apis.io/550wai-cn/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-29 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-29'
modified: '2026-10-29'
tags:
- AI
- VideoProcessing
- ImageProcessing
- WatermarkRemoval
- SubtitleRemoval
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgentSkill
  url: skills/_index.yml
- type: Conventions
  url: conventions/550wai-cn-conventions.yml
- type: Authentication
  url: authentication/550wai-cn-authentication.yml
- type: LLMsTxt
  url: llms/550wai-cn-llms.txt
- type: WellKnown
  url: well-known/550wai-cn-well-known.yml
- type: Hosts
  url: hosts/550wai-cn-hosts.yml
- type: Leadership
  url: https://qzm.550wai.cn/team
- type: DomainSecurity
  url: security/550wai-cn-domain-security.yml
- type: Website
  url: https://550wai.cn/
- type: Documentation
  url: https://qzm.550wai.cn/api-open/
- type: APIReference
  url: https://qzm.550wai.cn/api-open/
- type: GettingStarted
  url: https://www.550wai.cn/qsy.html
- type: Blog
  url: https://www.550wai.cn/blog/
apis:
- name: 550W AI Open API
  humanURL: https://qzm.550wai.cn/api-open/
  baseURL: https://qzm.550wai.cn/
  description: Public Open API for subtitle removal, watermark removal, image compression, async tasks and webhooks.
  version: '2026-10-08'
  tags:
  - AI
  - VideoProcessing
  - ImageProcessing
  aid: 550wai-cn:550w-ai-open-api
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: All attempted OpenAPI spec URLs on the API host returned 404, and no documentation provides a machine‑readable contract.
  evidence:
  - url: https://api.550wai.cn/openapi.json
    status: 404
  - url: https://api.550wai.cn/openapi.yaml
    status: 404
  - url: https://api.550wai.cn/swagger.json
    status: 404
  - url: https://api.550wai.cn/v1/openapi.json
    status: 404
  - url: https://api.550wai.cn/api-docs
    status: 404
  - url: https://api.550wai.cn/docs
    status: 404
  - url: https://api.550wai.cn/redoc
    status: 404
  checked: '2026-10-30'
x-enrichment:
  date: '2026-10-29'
  status: enriched
  artifacts_added: 18
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

550wai-cn API — frequently asked questions

Does 550wai-cn have an API?

Yes. APIs.io lists 1 API from 550wai-cn, including 550W AI Open API.

How do I authenticate with the 550wai-cn API?

550wai-cn documents its authentication (2 schemes). The details are profiled on APIs.io as 550Wai Cn Authentication.

Is the 550wai-cn API ready for AI agents?

550wai-cn has a Kin Score of 16.0 out of 100 (emerging) and an Agent Readiness score of 18.3 (agent-aware), scored by API Evangelist on 2026-10-31.

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