# SIX

**Canonical:** https://apis.io/providers/six-group/  
**Website:** https://www.six-group.com/  
**APIs profiled:** 9

SIX operates the financial market infrastructure of Switzerland and Spain, including SIX Swiss Exchange, BME, and Swiss interbank clearing and securities services, alongside SIX Financial Information, one of the largest global market data vendors. It sells real-time, intraday, end-of-day, and historical pricing, reference data, corporate actions, and regulatory/ESG datasets from more than 900 price sources, delivered via the SIX Web API (REST/JSON, GraphQL, WebSocket), the SIX Bulk API, streaming Market Data Feed, SIX Flex and Valordata Feed files, and Snowflake cloud shares. A public developer portal at developer.six-group.com fronts the bLink open banking platform, the debiX debit card API, and a shared Kong-based API catalog with Swiss interbank clearing and settlement APIs. Financial data access is enterprise and sales-gated with MTLS certificate authentication, while several Swiss payment infrastructure APIs are publicly documented with downloadable OpenAPI.

## Kin Score — 51.0 / 100 (developing)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 51.0).

| Facet | Score |
|---|---|
| Discoverability | 83.3 |
| Contract Quality | 63.8 |
| Governance | 20.8 |
| Operational Transparency | 47.4 |
| Developer Ergonomics | 66.8 |
| Commercial Clarity | 34.2 |

Regulatory layer — **Banking & Open Finance**: 39.2 (matched via tags).

## Agent readiness — 53.8 (agent-ready)

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

## Access

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

## APIs (9)

- **SIX Web API** — Single API onto the SIX financial data universe - real-time, intraday, end-of-day, and historical pricing across asset classes, reference data, corporate actions, tax, and ESG d...
- **SIX Bulk API** — REST/JSON bulk retrieval of the entire SIX financial data catalog - corporate actions, equities and fixed income reference data, and end-of-day pricing - as full extracts or del...
- **SIX bLink API** — Switzerland's open banking platform connecting banks and third-party service providers over RESTful JSON/XML APIs with OAuth consent flows - Account Information Services (AIS), ...
- **SIX debiX API** — REST API for card issuers on the debiX debit and mobile payment platform - transaction processing, card token lifecycle, push notifications, and bulk operations - with publicly ...
- **SIX debiX Auth Provider API** — Bidirectional authentication API pair between SIX and auth providers supporting the 3DS out-of-band (OOB) authentication flow for debiX debit cards, with publicly downloadable O...
- **Swiss Bank Master API** — Master data required for electronic payments in Switzerland - bank master records in JSON and CSV plus IBAN tooling - published openly on the SIX API portal; the documented prod...
- **SIC Service Status API** — Current operational status of the electronic payment services run by SIX Interbank Clearing Ltd, publicly documented with downloadable OpenAPI; GET /servicestatus on the documen...
- **SIC Clearing Day Calendar API** — Scheduling information for the electronic payment services provided by SIX Interbank Clearing Ltd - clearing day calendar lookups - publicly documented on the SIX API portal wit...
- **Settlement Info Reporting API** — Security settlement information reporting from the SIX custody cockpit for the Swiss market, publicly documented on the SIX API portal with a downloadable OpenAPI 3.0 definition...

## MCP servers (1)

- **six-group-mcp.yml**

## Security (3)

- **Six Group Authentication** — mutualTLS/oauth2/none · 6 schemes
- **Six Group Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC
- **Six Group Vulnerability Disclosure** — Hackerone · security.txt · contact published

## Tags

Financial, Market Data, Stocks, Reference Data, Corporate Actions, Real-Time, Exchange, Open Banking, Payments, Switzerland

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