# Blink Ledger Systems

**Canonical:** https://apis.io/providers/blink-ledger-systems/  
**Website:** https://blink.net  
**APIs profiled:** 5

Blink (Blink Ledger Systems Inc.) builds online identity and payment technologies for digital publishers. A single Blink account works across publishers, giving readers one universal login and frictionless payment so they can subscribe, donate, or buy an individual article or podcast with one click, or enable autopay for small frequent purchases. Publishers integrate three products — Blink Identity, Blink Pay and Blink Donate — through one hosted JavaScript SDK that places Blink-managed panels into the page, a dashboard-configured User Journeys rules engine, four server-side JSON endpoints for OAuth2 login, and a signed webhook notification stream covering subscription, payment and donation events. Founded 2017; incorporated in the US in 2018 and surfaced in the API Evangelist network as a Polychain portfolio company.

## Kin Score — 31.2 / 100 (thin)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 31.2).

| Facet | Score |
|---|---|
| Discoverability | 92.6 |
| Contract Quality | 21.9 |
| Governance | 16.7 |
| Contract Governance | 16.7 |
| Operational Transparency | 23.7 |
| Developer Ergonomics | 61.3 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

Regulatory layer — **Payments**: 26.6 (matched via tags).

## Agent readiness — 37.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | yes |
| Agent Skills | derived |
| Well Known Catalog | yes |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (5)

- **Blink SDK for JavaScript** — Browser SDK exposing window.blinkSDK. Provides Login with Blink (getAuthorizationCode), subscription entitlement checks (isSubscribed, getSubscription, onSubscriptionChange), si...
- **Blink Notifications (Webhooks)** — Outbound webhook stream delivering signed JSON notifications for subscription, payment and donation lifecycle events. Every payload is signed with ed25519 over the canonicalized...
- **Blink Ledger Systems Authentication API** — Client account login and bearer token issuance.
- **Blink Ledger Systems OAuth Applications API** — Registration and retrieval of OAuth application credentials.
- **Blink Ledger Systems Users API** — Blink user profile exchange.

## MCP servers (1)

- **Blink Ledger Systems MCP Server**

## Security (2)

- **Blink Ledger Systems Authentication** — 6 schemes
- **Blink Ledger Systems Domain Security** — TLSv1.3

## Tags

Company, Infrastructure, Payments, Identity, Authentication, Publishing, Media, Subscription, Donations, Micropayments, Paywall, Webhook

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/blink-ledger-systems/). Scores are computed from the provider's own public artifacts under a published rubric.