Sommelier

Sommelier (rebranding to "Somm") is a decentralized asset-management and DeFi vault protocol whose smart-contract "cellars" run automated yield strategies on Ethereum. It publishes a public, read-only HTTP API that exposes on-chain vault performance data — daily and hourly snapshots (APY, TVL, share price, total assets), protocol-wide total value locked, per-cellar snapshots, and integration datasets for Kelp and ether.fi points and balances. All endpoints are unauthenticated GET requests with path-based parameters and a { "Response": ... } envelope; the API currently serves the ethereum network. Backed by Multicoin Capital.

Sommelier publishes 3 APIs on the APIs.io network: Integrations API, Protocol API, and Vault Data API. Tagged areas include Company, Crypto Web3, DeFi, Blockchain, and Ethereum.

Sommelier’s developer surface includes authentication and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

27.4/100 thin ▬ flat Agent 22/100 agent aware Front door AI 2/6 trace Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

3 APIs

Company Crypto Web3 DeFi Blockchain Ethereum Vault Yield Analytics

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 27.4/100 · thin

Contract Quality 9.2 / 21

Developer Ergonomics 6.8 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.5 / 10

Discoverability 6.7 / 9

Regulatory Posture 2.5 / 15

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 4 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/sommelier: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

Sommelier Integrations API

Integration-specific datasets (Kelp, ether.fi).

Sommelier Protocol API

Protocol-wide metrics such as total value locked.

Sommelier Vault Data API

Daily and hourly performance snapshots of Sommelier vaults (cellars).

Open Collections 4

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Sommelier Finance Integrations API

OPEN COLLECTION

Sommelier Finance Integrations Protocol API

OPEN COLLECTION

Sommelier Finance Integrations Vault Data API

OPEN COLLECTION

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Sommelier Authentication

none · 0 schemes

SECURITY

Sommelier Domain Security

TLSv1.3 · HSTS · DNSSEC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Conventions

Conventions

DataModel

DataModel

Conformance

Conformance

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: sommelier
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/sommelier.png
name: Sommelier
description: 'Sommelier (rebranding to "Somm") is a decentralized asset-management and DeFi vault protocol whose smart-contract
  "cellars" run automated yield strategies on Ethereum. It publishes a public, read-only HTTP API that exposes on-chain vault
  performance data — daily and hourly snapshots (APY, TVL, share price, total assets), protocol-wide total value locked, per-cellar
  snapshots, and integration datasets for Kelp and ether.fi points and balances. All endpoints are unauthenticated GET requests
  with path-based parameters and a { "Response": ... } envelope; the API currently serves the ethereum network. Backed by
  Multicoin Capital.'
url: https://raw.githubusercontent.com/api-evangelist/sommelier/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- multicoin-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Crypto Web3
- DeFi
- Blockchain
- Ethereum
- Vault
- Yield
- Analytics
tags_raw:
- Company
- Crypto Web3
- DeFi
- Blockchain
- Ethereum
- Vaults
- Yield
- Analytics
apis:
- aid: sommelier:sommelier-integrations-api
  name: Sommelier Integrations API
  description: Integration-specific datasets (Kelp, ether.fi).
  humanURL: https://api.sommelier.finance/
  baseURL: https://api.sommelier.finance
  tags:
  - Integration
  tags_raw:
  - Integrations
  properties:
  - type: OpenAPI
    url: openapi/sommelier-integrations-api-openapi.yml
  - type: Documentation
    url: https://api.sommelier.finance/
  - type: APIReference
    url: https://api.sommelier.finance/
- aid: sommelier:sommelier-protocol-api
  name: Sommelier Protocol API
  description: Protocol-wide metrics such as total value locked.
  humanURL: https://api.sommelier.finance/
  baseURL: https://api.sommelier.finance
  tags:
  - Protocol
  properties:
  - type: OpenAPI
    url: openapi/sommelier-protocol-api-openapi.yml
  - type: Documentation
    url: https://api.sommelier.finance/
  - type: APIReference
    url: https://api.sommelier.finance/
- aid: sommelier:sommelier-vault-data-api
  name: Sommelier Vault Data API
  description: Daily and hourly performance snapshots of Sommelier vaults (cellars).
  humanURL: https://api.sommelier.finance/
  baseURL: https://api.sommelier.finance
  tags:
  - Vault Data
  properties:
  - type: OpenAPI
    url: openapi/sommelier-vault-data-api-openapi.yml
  - type: Documentation
    url: https://api.sommelier.finance/
  - type: APIReference
    url: https://api.sommelier.finance/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.somm.finance
- type: DeveloperPortal
  url: https://api.sommelier.finance/
- type: DomainSecurity
  url: security/sommelier-domain-security.yml
- type: Authentication
  url: authentication/sommelier-authentication.yml
- type: Conventions
  url: conventions/sommelier-conventions.yml
- type: DataModel
  url: data-model/sommelier-data-model.yml
- type: Conformance
  url: conformance/sommelier-conformance.yml
- type: X-MCPServerCandidate
  url: mcp/sommelier-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: LLMsTxt
  url: llms/sommelier-llms.txt
- type: Overlay
  url: overlays/sommelier-api-overlay.yaml
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 12
  pass: local-v1

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