X1

X1 was a San Francisco fintech behind the X1 Card, a smart Visa credit card that set limits based on income rather than credit score, backed by Craft Ventures. Robinhood acquired X1 in 2023 and folded the product into what is now the Robinhood Gold Card; x1creditcard.com and api.x1creditcard.com redirect to robinhood.com (probed 2026-07-21). X1 never published a public developer API, ships no SDK packages, and has no GitHub organization, so this profile records the acquisition and the domain-security posture of the remaining domain and points to the Robinhood profile in the API Evangelist network.

X1 is profiled on the APIs.io network. Tagged areas include Company, Fintech, Credit Cards, Consumer Finance, and Payments.

🌐 Visit website 📡 Source on GitHub
7.7/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyFintechCredit CardsConsumer FinancePaymentsAcquired

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 7.7/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.0 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
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 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/x1: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 1

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

X1 Domain Security

TLSv1.3 · HSTS · DMARC

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

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: x1
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/x1.png
name: X1
description: X1 was a San Francisco fintech behind the X1 Card, a smart Visa credit card that set limits based on income rather
  than credit score, backed by Craft Ventures. Robinhood acquired X1 in 2023 and folded the product into what is now the Robinhood
  Gold Card; x1creditcard.com and api.x1creditcard.com redirect to robinhood.com (probed 2026-07-21). X1 never published a
  public developer API, ships no SDK packages, and has no GitHub organization, so this profile records the acquisition and
  the domain-security posture of the remaining domain and points to the Robinhood profile in the API Evangelist network.
url: https://raw.githubusercontent.com/api-evangelist/x1/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- craft-ventures
x-tier: stub
x-tier-reason: portfolio-lead
x-status: acquired
x-acquired-by: robinhood
x-acquired-date: '2023'
specificationVersion: '0.20'
x-enrichment:
  date: '2026-07-21'
  status: minimal
  artifacts_added: 2
  pass: local-v1
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Fintech
- Credit Cards
- Consumer Finance
- Payments
- Acquired
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/x1-domain-security.yml
- type: LLMsTxt
  url: llms/x1-llms.txt
- type: Website
  url: https://x1creditcard.com