Element

Element (Element Finance) is an Andreessen Horowitz-backed decentralized finance protocol for fixed and variable yield on crypto assets. The protocol splits an interest-bearing position into tradable Principal Tokens (PTs) and Yield Tokens (YTs) so users can lock in a fixed rate by buying discounted principal, or take variable-rate exposure, redeeming at face value on maturity via on-chain AMMs. It also ships the Council governance framework (voting vaults, delegation, the Governance Steering Council) that powers the Element DAO. Element is a smart-contract protocol on Ethereum rather than a hosted REST API: developers integrate through the on-chain contracts, the elf-sdk TypeScript library, and the published contract reference. The team has since rebranded to DELV (delvtech).

Element is profiled on the APIs.io network. Tagged areas include Company, DeFi, Decentralized Finance, Fixed Income, and Yield.

Element’s developer surface includes documentation, API reference, getting-started guide, changelog, and 14 more developer resources.

🌐 Visit website 📡 Source on GitHub

21.7/100 emerging ▬ flat Agent 0/100 human only self hosted · Apache-2.0 Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company DeFi Decentralized Finance Fixed Income Yield Ethereum Smart Contracts Cryptocurrency Governance DAO

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 21.7/100 · emerging

Contract Quality 0.0 / 23

Developer Ergonomics 8.1 / 18

Access Clarity 0.0 / 18

Operational Transparency 3.4 / 12

Contract Governance 0.0 / 11

Discoverability 5.2 / 9

Open Source Surface 5.0 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 90 points between them, because the conditional facet above carries the other 10. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 90% 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/element: 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 →

Security Posture 1

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

Element Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 3

Reference material describing how the API behaves

ContributionGuide

ContributionGuide

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

SourceCode

Packages

SDKs

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Security

Security

Operate 3

Status, limits, changes, and where to get help

IssueTracker

IssueTracker

Releases

Releases

ChangeLog

ChangeLog

Commercial 1

Pricing, plans, and the legal terms of use

License

License

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: element
deliveryModel:
  model: self-hosted
  license: Apache-2.0
  open_source: true
  commercial: false
  callable_host: false
  label: Self-hosted open source · you run it yourself
  confidence: high
  source:
  - license
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/element.png
name: Element
description: 'Element (Element Finance) is an Andreessen Horowitz-backed decentralized finance protocol for fixed and variable
  yield on crypto assets. The protocol splits an interest-bearing position into tradable Principal Tokens (PTs) and Yield
  Tokens (YTs) so users can lock in a fixed rate by buying discounted principal, or take variable-rate exposure, redeeming
  at face value on maturity via on-chain AMMs. It also ships the Council governance framework (voting vaults, delegation,
  the Governance Steering Council) that powers the Element DAO. Element is a smart-contract protocol on Ethereum rather than
  a hosted REST API: developers integrate through the on-chain contracts, the elf-sdk TypeScript library, and the published
  contract reference. The team has since rebranded to DELV (delvtech).'
url: https://raw.githubusercontent.com/api-evangelist/element/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: stub
x-tier-reason: portfolio-lead
x-successor: DELV (delvtech)
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- DeFi
- Decentralized Finance
- Fixed Income
- Yield
- Ethereum
- Smart Contracts
- Cryptocurrency
- Governance
- DAO
apis: []
common:
- type: IssueTracker
  url: https://github.com/delvtech/elf-contracts/issues
- type: Releases
  url: https://github.com/delvtech/elf-contracts/releases
- type: ContributionGuide
  url: https://github.com/delvtech/elf-contracts/blob/main/CONTRIBUTING.md
- type: License
  name: Apache-2.0
  url: https://github.com/delvtech/elf-contracts/blob/main/LICENSE
- type: DomainSecurity
  url: security/element-domain-security.yml
- type: Website
  url: https://element.fi
- type: DeveloperPortal
  url: https://docs.element.fi
- type: Documentation
  url: https://docs.element.fi
- type: APIReference
  name: Element Protocol Smart Contracts
  url: https://docs-delv.gitbook.io/element-protocol-developer-docs/element/element-smart-contracts.md
- type: GettingStarted
  url: https://docs-delv.gitbook.io/element-protocol-developer-docs/getting-started/buying-fixed-rates.md
- type: GitHubOrganization
  url: https://github.com/element-fi
- type: SourceCode
  name: elf-contracts (core protocol)
  url: https://github.com/delvtech/elf-contracts
- type: ChangeLog
  name: Public Releases
  url: https://docs-delv.gitbook.io/element-protocol-developer-docs/developers/public-releases.md
- type: Security
  name: Element Protocol Security & Audits
  url: https://docs-delv.gitbook.io/element-protocol-developer-docs/developers/security.md
- type: Packages
  url: packages/element-packages.yml
- type: SDKs
  name: elf-sdk (TypeScript)
  url: packages/element-packages.yml
- type: LLMsTxt
  url: llms/element-llms.txt
- type: WellKnown
  url: well-known/element-well-known.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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