# SJSemi

**Canonical:** https://apis.io/providers/sjsemi/  
**Website:** https://en.sjsemi.com/  
**APIs profiled:** 0

SJSemi (SJSemiconductor (Jiangyin) Corp.) is a Chinese semiconductor Middle-End-Of-Line (MEOL) pure-play foundry and outsourced assembly and test (OSAT) provider, founded in 2014 as a joint venture between JCET and SMIC and headquartered in the Jiangyin High-Tech Industrial Development Zone, Jiangsu, with offices in Shanghai and Santa Clara, California. The company operates a 12-inch wafer bumping, wafer-level chip-scale packaging, chip probing and final-test line, and supplies advanced packaging and 3D multi-die integration services — Cu pillar, RDL, fan-out, TSV and silicon interposer 2.5D — into smartphone, 5G communications, high-performance computing, data-center and automotive electronics supply chains. It is a contract manufacturer of physical semiconductor packaging services and publishes no public developer program, API, or machine-readable interface contract.

## Kin Score — 5.4 / 100 (minimal)

Scored 2026-09-01 under rubric 0.17.2. Trend: flat (+0.0 from 5.4).

| Facet | Score |
|---|---|
| Discoverability | 53.7 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 0.0 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Security (1)

- **Sjsemi Domain Security** — TLSv1.3 · HSTS

## Tags

Company, Semiconductors, Hardware, Manufacturing, Advanced Packaging, Wafer Test, OSAT, China

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