# Sound.xyz

**Canonical:** https://apis.io/providers/soundxyz/  
**Website:** https://www.sound.xyz  
**APIs profiled:** 0

Sound.xyz was a web3 music platform and suite of on-chain tools that let artists release music as digital collectibles and host listening parties for new releases, building direct economic relationships with their communities. The consumer platform went offline on 2026-01-16 (with a successor project, Vault.fm), but Sound.xyz's first-party developer surface remains publicly published: the open-source Sound protocol (a permissionless Solidity smart-contract framework for music collectibles) and the official @soundxyz npm SDK ecosystem (@soundxyz/sdk, sdk-viem, legacy-sdk) for on-chain development, alongside GraphQL and caching infrastructure libraries. Added to the API Evangelist network as an a16z portfolio company; this profile now reflects the enrichment pipeline's findings.

## Kin Score — 7.7 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 7.7).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 11.9 |
| 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 |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (1)

- **Soundxyz Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Music, Web3, Blockchain, NFT, Smart Contracts, Creator Economy, SDK, Ethereum, Digital Collectibles

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