400860 x402 Growth and Safety Catalog

400860 x402 Growth and Safety Catalog is the name under which a single A2A agent is listed on a2aregistry.org, with its agent card declared at https://api.400860.xyz/.well-known/agent-card.json. The registry copy of the card describes five skills for agents that buy and sell over the x402 payment protocol: an agent security policy pack, x402 market intel, a paid MCP launch pack, a seller checkout repair pack, and an agent spend firewall pack. As of 2026-09-19 the api.400860.xyz origin answers Cloudflare 521 on every path, the registry's own health checks record 0% uptime and a failed message/send smoke test, and www.400860.xyz serves a stock NextChat chat interface with no company, documentation, pricing or legal pages. The operator is not identified anywhere on its own hosts.

400860 x402 Growth and Safety Catalog is profiled on the APIs.io network. Tagged areas include AI Agents, A2A, x402, Agentic Payments, and MCP.

🌐 Visit website 📡 Profile data on GitHub

2.3/100 minimal ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-11-02 · rubric v0.26.0 · Show this score on your site →

0 APIs

AI Agents A2A x402 Agentic Payments MCP Agent SecurityAgent Marketplaces

Kin Score

Kin Score How this is scored →
scored 2026-11-02 · rubric v0.26.0

Composite quality — 2.3/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 3.8 / 9

Regulatory Posture 0.8 / 15

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 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 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Payments 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
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

12 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
Developer Ergonomics scores 0.0 — up to +20.0 composite points
Access Clarity scores 0.0 — up to +20.0 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/400860-xyz/apis.yml: open an issue on github.com/api-evangelist/400860-xyz 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 →

Standards implemented 3

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Agent2Agent

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

Model Context Protocol (MCP)

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

x402

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

Pricing Plans 1

Published pricing tiers and plan structures.

400860 Xyz Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

400860 Xyz Rate Limits

0 limits

RATE LIMITS

Security Posture 1

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

400860 Xyz Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 1

Pricing, plans, and the legal terms of use

Plans

Plans

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: 400860-xyz
name: 400860 x402 Growth and Safety Catalog
description: '400860 x402 Growth and Safety Catalog is the name under which a single A2A agent is listed on a2aregistry.org,
  with its agent card declared at https://api.400860.xyz/.well-known/agent-card.json. The registry copy of the card describes
  five skills for agents that buy and sell over the x402 payment protocol: an agent security policy pack, x402 market intel,
  a paid MCP launch pack, a seller checkout repair pack, and an agent spend firewall pack. As of 2026-09-19 the api.400860.xyz
  origin answers Cloudflare 521 on every path, the registry''s own health checks record 0% uptime and a failed message/send
  smoke test, and www.400860.xyz serves a stock NextChat chat interface with no company, documentation, pricing or legal pages.
  The operator is not identified anywhere on its own hosts.'
url: https://raw.githubusercontent.com/api-evangelist/400860-xyz/refs/heads/main/apis.yml
x-type: company
x-source: harvest:a2a-registry
x-tier: stub
x-tier-reason: harvest
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  probe_state: none
  source:
  - rate-limits
  - security
  generated: '2026-11-02'
  method: derived
specificationVersion: '0.20'
created: '2026-09-19'
modified: '2026-09-19'
tags:
- AI Agents
- A2A
- x402
- Agentic Payments
- MCP
- Agent Security
- Agent Marketplaces
tags_raw:
- AI Agents
- A2A
- x402
- Agent Payments
- MCP
- Agent Security
- Agent Marketplaces
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/400860-xyz-domain-security.yml
- type: Website
  url: https://400860.xyz/
- type: Plans
  url: plans/400860-xyz-plans-pricing.yml
- type: RateLimits
  url: rate-limits/400860-xyz-rate-limits.yml
- type: LLMsTxt
  url: llms/400860-xyz-llms.txt
x-coverage:
  state: none
  reason: defunct
  detail: 'The only API host, api.400860.xyz, answers Cloudflare 521 (origin down) on every path including the agent card
    a2aregistry.org indexed (whose own record shows 0% uptime and a failed message/send smoke test), and www.400860.xyz is
    a stock NextChat chatbot shell with robots Disallow: / and no company, docs, pricing or legal pages.'
  evidence:
  - url: https://api.400860.xyz/.well-known/agent-card.json
    status: 521
  - url: https://api.400860.xyz/
    status: 521
  - url: https://www.400860.xyz/.well-known/agent-card.json
    status: 404
  - url: https://www.400860.xyz/
    status: 200
  - url: https://400860.xyz/
    status: 307
  checked: '2026-09-19'
x-enrichment:
  date: '2026-09-19'
  status: minimal
  artifacts_added: 6
  pass: local-v3

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