Angle

Angle (Angle Labs, Inc.) is a decentralized, over-collateralized stablecoin protocol that issued the euro-pegged EURA and dollar-pegged USDA stablecoins, along with yield-bearing staked versions of each. Its on-chain modules included the Transmuter basket-and-dynamic-fee minting system, a borrowing module for depositing collateral against stablecoin debt, a native savings system, and cross-chain liquidity infrastructure. The protocol is open source under the AngleProtocol GitHub organization and ships a TypeScript SDK for building applications on top of it. Angle has announced the end of its operations — the protocol remains fully collateralized and every USDA and EURA is redeemable 1:1 until 1 March 2027 — and the team's ongoing work has moved to Merkl. Angle exposes smart contracts and a client SDK rather than a documented public REST API.

Angle publishes 20 API contracts indexed on the APIs.io network, including Allowances API, Protocol Data API, App API, and 17 more. Tagged areas include Company, Stablecoins, Decentralized Finance, Blockchain, and Cryptocurrency.

The Angle catalog on APIs.io includes 1 Spectral governance ruleset.

Angle’s developer surface includes engineering blog, authentication, documentation, and 24 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

31.5/100 thin ▬ flat Agent 26/100 agent aware Front door AI 1/6 silent Heartbeat 100/100 alive open core · GPL-3.0 Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

2 published contracts 3 Agent Skills

Company Stablecoins Decentralized Finance Blockchain Cryptocurrency Smart Contracts Ethereum SDK

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 31.5/100 · thin

Contract Quality 8.6 / 19

Developer Ergonomics 6.0 / 15

Access Clarity 0.0 / 15

Operational Transparency 1.0 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 2.5 / 15

Open Source Surface 4.0 / 10

Agent readiness — 26/100 · 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 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 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

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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.

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 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 75 points between them, because both conditional facets apply and carry 25 points together. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

5 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 0.0 — up to +20.0 composite points
Contract Quality scores 45.6 — up to +13.6 composite points
Developer Ergonomics scores 39.9 — up to +12.0 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/angle/apis.yml: open an issue on github.com/api-evangelist/angle to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Stablecoins and Tokenization (stablecoin issuers, tokenized assets)	mixed	44.1	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 20

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

Angle Allowances API

The Allowances API from Angle — 1 operation(s) for allowances.

Angle Protocol Data API

The Angle Protocol Data API from Angle — 3 operation(s) for angle protocol data.

Angle App API

The App API from Angle — 1 operation(s) for app.

Angle Apr API

The Apr API from Angle — 1 operation(s) for apr.

Angle Balances API

The Balances API from Angle — 1 operation(s) for balances.

Angle Borrow API

The Borrow API from Angle — 4 operation(s) for borrow.

Angle Bridge API

The Bridge API from Angle — 1 operation(s) for bridge.

Angle Dao API

The Dao API from Angle — 1 operation(s) for dao.

Angle Helpers API

The Helpers API from Angle — 5 operation(s) for helpers.

Angle Incentives API

The Incentives API from Angle — 1 operation(s) for incentives.

Angle Integrators API

The Integrators API from Angle — 6 operation(s) for integrators.

Angle Perpetuals API

The Perpetuals API from Angle — 1 operation(s) for perpetuals.

Angle Pools API

The Pools API from Angle — 1 operation(s) for pools.

Angle Prices API

The Prices API from Angle — 1 operation(s) for prices.

Angle Savings API

The Savings API from Angle — 3 operation(s) for savings.

Angle Tvl API

The Tvl API from Angle — 1 operation(s) for tvl.

Angle User related information API

The User related information API from Angle — 3 operation(s) for user related information.

Angle VaultManagers API

The VaultManagers API from Angle — 1 operation(s) for vaultmanagers.

Angle Vaults API

The Vaults API from Angle — 1 operation(s) for vaults.

Angle Volume API

The Volume API from Angle — 1 operation(s) for volume.

Scroll for all 20

Open Collections 20

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

Angle Allowances API

OPEN COLLECTION

Angle Allowances Angle Protocol Data API

OPEN COLLECTION

Angle Allowances App API

OPEN COLLECTION

Angle Allowances Apr API

OPEN COLLECTION

Angle Allowances Balances API

OPEN COLLECTION

Angle Allowances Borrow API

OPEN COLLECTION

Angle Allowances Bridge API

OPEN COLLECTION

Angle Allowances Dao API

OPEN COLLECTION

Angle Allowances Helpers API

OPEN COLLECTION

Angle Allowances Incentives API

OPEN COLLECTION

Angle Allowances Integrators API

OPEN COLLECTION

Angle Allowances Perpetuals API

OPEN COLLECTION

Angle Allowances Pools API

OPEN COLLECTION

Angle Allowances Prices API

OPEN COLLECTION

Angle Allowances Savings API

OPEN COLLECTION

Angle Allowances Tvl API

OPEN COLLECTION

Angle Allowances User related information API

OPEN COLLECTION

Angle Allowances VaultManagers API

OPEN COLLECTION

Angle Allowances Vaults API

OPEN COLLECTION

Angle Allowances Volume API

OPEN COLLECTION

Scroll for all 20

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

angle-build-borrow-transaction

AGENT SKILL

angle-monitor-borrow-vaults

AGENT SKILL

angle-track-savings-yield

AGENT SKILL

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Angle API Rules

48 rules · 40 errors 7 warnings 1 info

SPECTRAL

OpenAPI Overlays 2

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Angle Api Openapi Github Overlay

1 action · update · angle-api-openapi-github.yaml

DERIVED

Angle Api Openapi Overlay

1 action · update · angle-api-openapi.json

DERIVED

Security Posture 2

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

Angle Authentication

1 scheme

SECURITY

Angle Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Resources

Documentation 3

Reference material describing how the API behaves

ContributionGuide

ContributionGuide

OpenAPI

OpenAPI

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Lifecycle

Conventions

ErrorCatalog

DataModel

Conformance

Build 5

SDKs, sample code, and the tooling you integrate with

CodeOfConduct

CodeOfConduct

GitHubOrganization

SourceCode

Packages

SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

IssueTracker

IssueTracker

Deprecation

Deprecation

Commercial 3

Pricing, plans, and the legal terms of use

License

License

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Overlay

Overlay

Overlay

Overlay

Source (apis.yml)

aid: angle
deliveryModel:
  model: open-core
  license: GPL-3.0
  open_source: true
  commercial: true
  callable_host: true
  label: Open core · an OSS project plus a commercial hosted product
  confidence: high
  source:
  - license
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/angle.png
name: Angle
description: Angle (Angle Labs, Inc.) is a decentralized, over-collateralized stablecoin protocol that issued the euro-pegged
  EURA and dollar-pegged USDA stablecoins, along with yield-bearing staked versions of each. Its on-chain modules included
  the Transmuter basket-and-dynamic-fee minting system, a borrowing module for depositing collateral against stablecoin debt,
  a native savings system, and cross-chain liquidity infrastructure. The protocol is open source under the AngleProtocol GitHub
  organization and ships a TypeScript SDK for building applications on top of it. Angle has announced the end of its operations
  — the protocol remains fully collateralized and every USDA and EURA is redeemable 1:1 until 1 March 2027 — and the team's
  ongoing work has moved to Merkl. Angle exposes smart contracts and a client SDK rather than a documented public REST API.
url: https://raw.githubusercontent.com/api-evangelist/angle/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
tags:
- Company
- Stablecoins
- Decentralized Finance
- Blockchain
- Cryptocurrency
- Smart Contracts
- Ethereum
- SDK
apis:
- aid: angle:angle-allowances-api
  name: Angle Allowances API
  description: The Allowances API from Angle — 1 operation(s) for allowances.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - Allowances
  properties:
  - type: OpenAPI
    url: openapi/angle-allowances-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-angle-protocol-data-api
  name: Angle Protocol Data API
  description: The Angle Protocol Data API from Angle — 3 operation(s) for angle protocol data.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - Angle Protocol Data
  properties:
  - type: OpenAPI
    url: openapi/angle-angle-protocol-data-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-app-api
  name: Angle App API
  description: The App API from Angle — 1 operation(s) for app.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - App
  properties:
  - type: OpenAPI
    url: openapi/angle-app-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-apr-api
  name: Angle Apr API
  description: The Apr API from Angle — 1 operation(s) for apr.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - APR
  tags_raw:
  - Apr
  properties:
  - type: OpenAPI
    url: openapi/angle-apr-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-balances-api
  name: Angle Balances API
  description: The Balances API from Angle — 1 operation(s) for balances.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - Balances
  properties:
  - type: OpenAPI
    url: openapi/angle-balances-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-borrow-api
  name: Angle Borrow API
  description: The Borrow API from Angle — 4 operation(s) for borrow.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - Borrow
  properties:
  - type: OpenAPI
    url: openapi/angle-borrow-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-bridge-api
  name: Angle Bridge API
  description: The Bridge API from Angle — 1 operation(s) for bridge.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - Bridge
  properties:
  - type: OpenAPI
    url: openapi/angle-bridge-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-dao-api
  name: Angle Dao API
  description: The Dao API from Angle — 1 operation(s) for dao.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - DAO
  tags_raw:
  - Dao
  properties:
  - type: OpenAPI
    url: openapi/angle-dao-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-helpers-api
  name: Angle Helpers API
  description: The Helpers API from Angle — 5 operation(s) for helpers.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - Helpers
  properties:
  - type: OpenAPI
    url: openapi/angle-helpers-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-incentives-api
  name: Angle Incentives API
  description: The Incentives API from Angle — 1 operation(s) for incentives.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - Incentives
  properties:
  - type: OpenAPI
    url: openapi/angle-incentives-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-integrators-api
  name: Angle Integrators API
  description: The Integrators API from Angle — 6 operation(s) for integrators.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - Integrators
  properties:
  - type: OpenAPI
    url: openapi/angle-integrators-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-perpetuals-api
  name: Angle Perpetuals API
  description: The Perpetuals API from Angle — 1 operation(s) for perpetuals.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - Perpetuals
  properties:
  - type: OpenAPI
    url: openapi/angle-perpetuals-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-pools-api
  name: Angle Pools API
  description: The Pools API from Angle — 1 operation(s) for pools.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - Pools
  properties:
  - type: OpenAPI
    url: openapi/angle-pools-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-prices-api
  name: Angle Prices API
  description: The Prices API from Angle — 1 operation(s) for prices.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - Prices
  properties:
  - type: OpenAPI
    url: openapi/angle-prices-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-savings-api
  name: Angle Savings API
  description: The Savings API from Angle — 3 operation(s) for savings.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - Savings
  properties:
  - type: OpenAPI
    url: openapi/angle-savings-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-tvl-api
  name: Angle Tvl API
  description: The Tvl API from Angle — 1 operation(s) for tvl.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - TVL
  tags_raw:
  - Tvl
  properties:
  - type: OpenAPI
    url: openapi/angle-tvl-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-user-related-information-api
  name: Angle User related information API
  description: The User related information API from Angle — 3 operation(s) for user related information.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - User related information
  properties:
  - type: OpenAPI
    url: openapi/angle-user-related-information-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-vaultmanagers-api
  name: Angle VaultManagers API
  description: The VaultManagers API from Angle — 1 operation(s) for vaultmanagers.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - VaultManagers
  properties:
  - type: OpenAPI
    url: openapi/angle-vaultmanagers-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-vaults-api
  name: Angle Vaults API
  description: The Vaults API from Angle — 1 operation(s) for vaults.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - Vault
  tags_raw:
  - Vaults
  properties:
  - type: OpenAPI
    url: openapi/angle-vaults-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
- aid: angle:angle-volume-api
  name: Angle Volume API
  description: The Volume API from Angle — 1 operation(s) for volume.
  humanURL: https://angle.money
  baseURL: https://api.angle.money
  tags:
  - Volume
  properties:
  - type: OpenAPI
    url: openapi/angle-volume-api-openapi.yml
  - type: Authentication
    url: authentication/angle-authentication.yml
  - type: Conventions
    url: conventions/angle-conventions.yml
  - type: ErrorCatalog
    url: errors/angle-problem-types.yml
  - type: APIReference
    url: https://api.angle.money/api-docs/
  - type: DataModel
    url: data-model/angle-data-model.yml
common:
- url: https://angle.money/news/
  type: Blog
- type: X-MCPServerCandidate
  url: mcp/angle-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: IssueTracker
  url: https://github.com/AngleProtocol/angle-core/issues
- type: CodeOfConduct
  url: https://github.com/AngleProtocol/angle-core/blob/main/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/AngleProtocol/angle-core/blob/main/CONTRIBUTING.md
- type: License
  name: GPL-3.0
  url: https://github.com/AngleProtocol/angle-core/blob/main/LICENSE
- type: Authentication
  url: authentication/angle-authentication.yml
- type: DomainSecurity
  url: security/angle-domain-security.yml
- type: Website
  url: https://angle.money
- type: GitHubOrganization
  url: https://github.com/AngleProtocol
- type: SourceCode
  url: https://github.com/AngleProtocol/angle-core
- type: Packages
  url: packages/angle-packages.yml
- type: SDKs
  url: packages/angle-packages.yml
- type: Lifecycle
  url: lifecycle/angle-lifecycle.yml
- type: Deprecation
  url: lifecycle/angle-lifecycle.yml
- type: Conventions
  url: conventions/angle-conventions.yml
- type: ErrorCatalog
  url: errors/angle-problem-types.yml
- type: DataModel
  url: data-model/angle-data-model.yml
- type: Conformance
  url: conformance/angle-conformance.yml
- type: Overlay
  url: overlays/angle-api-openapi-overlay.yaml
- type: Overlay
  url: overlays/angle-api-openapi-github-overlay.yaml
- type: LLMsTxt
  url: llms/angle-llms.txt
- type: OpenAPI
  url: openapi/_original/angle-api-openapi.json
- type: AgentSkill
  url: skills/_index.yml
- type: Documentation
  url: https://github.com/AngleProtocol/angle-docs
- type: TermsOfService
  url: https://angle.money/terms
- type: PrivacyPolicy
  url: https://angle.money/privacy
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: enriched
  artifacts_added: 22
  pass: local-v1

Angle API — frequently asked questions

Does Angle have an API?

Yes. APIs.io lists 20 APIs from Angle, including Angle Allowances API, Angle Protocol Data API and Angle App API, and 17 more.

Is there an OpenAPI specification for the Angle API?

Yes. APIs.io indexes 20 OpenAPI specifications for Angle, each linked for download from this page.

How do I authenticate with the Angle API?

Angle uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Angle Authentication.

Is the Angle API ready for AI agents?

Angle has a Kin Score of 31.5 out of 100 (thin) and an Agent Readiness score of 25.6 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/angle"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/angle/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/angle/evidence"

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