Linen App

Linen Wallet, operated by Linen Mobile, Inc., was a mobile self-custody cryptocurrency wallet that used multi-signature protection built on Safe (formerly Gnosis Safe) smart-contract accounts instead of the single seed phrase used by most wallets. It began as a DeFi savings wallet earning yield on stablecoins through Compound, later adding Ethereum staking and Polygon support, and grew out of Bloqboard, a non-custodial digital-asset lending platform built on the Dharma, Compound and MakerDAO protocols. Linen was backed by Polychain, Coinbase Ventures, HashKey and Wyre, and won Aave and Polygon grants. The product is discontinued — since late 2023 every path on linen.app has returned a site-wide redirect to a single X post, and no documentation, developer portal, API or specification was ever published publicly. See lifecycle/linen-app-lifecycle.yml for the probed wind-down evidence.

Linen App is profiled on the APIs.io network. Tagged areas include Company, Wallet, Cryptocurrency, Ethereum, and DeFi.

🌐 Visit website 📡 Source on GitHub

8.3/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyWalletCryptocurrencyEthereumDeFiSelf CustodyMultisigBlockchainDiscontinued

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 8.3/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.0 / 20

Commercial Clarity 0.0 / 20

Operational Transparency 0.7 / 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/linen-app: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

SourceCode

SourceCode

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: linen-app
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/linen-app.png
name: Linen App
description: Linen Wallet, operated by Linen Mobile, Inc., was a mobile self-custody cryptocurrency wallet that used multi-signature
  protection built on Safe (formerly Gnosis Safe) smart-contract accounts instead of the single seed phrase used by most wallets.
  It began as a DeFi savings wallet earning yield on stablecoins through Compound, later adding Ethereum staking and Polygon
  support, and grew out of Bloqboard, a non-custodial digital-asset lending platform built on the Dharma, Compound and MakerDAO
  protocols. Linen was backed by Polychain, Coinbase Ventures, HashKey and Wyre, and won Aave and Polygon grants. The product
  is discontinued — since late 2023 every path on linen.app has returned a site-wide redirect to a single X post, and no documentation,
  developer portal, API or specification was ever published publicly. See lifecycle/linen-app-lifecycle.yml for the probed
  wind-down evidence.
url: https://raw.githubusercontent.com/api-evangelist/linen-app/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- polychain
x-tier: stub
x-tier-reason: defunct-no-public-api
x-status: discontinued
x-legal-entity: Linen Mobile, Inc.
x-formerly: Bloqboard
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Wallet
- Cryptocurrency
- Ethereum
- DeFi
- Self Custody
- Multisig
- Blockchain
- Discontinued
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://linen.app
- type: GitHubOrganization
  url: https://github.com/linen-app
- type: SourceCode
  name: Bloqboard Lending Wallet
  url: https://github.com/linen-app/bloqboard-lending-wallet
- type: X
  url: https://x.com/GetLinen
- type: Lifecycle
  url: lifecycle/linen-app-lifecycle.yml
- type: DomainSecurity
  url: security/linen-app-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence