Frax Finance

Frax Finance is a fractional-algorithmic stablecoin protocol offering FRAX (USD-pegged stablecoin), FPI (Frax Price Index stablecoin pegged to a consumer goods basket), frxETH (liquid ETH staking derivative), and supporting DeFi infrastructure including Fraxswap, Fraxlend, and Fraxtal L2. The protocol operates Algorithmic Market Operations (AMOs) to manage collateral and generate revenue, and exposes public REST APIs for querying token supply, collateral ratios, AMO positions, pool APRs, and frxETH staking analytics.

Frax Finance publishes 17 APIs on the APIs.io network, including v1-gauge API, v1-prices API, v1-protocol API, and 14 more. Tagged areas include DeFi, Stablecoins, Fractional-Algorithmic, Ethereum, and frxETH.

The Frax Finance catalog on APIs.io includes 1 JSON-LD context.

Frax Finance’s developer surface includes documentation, GitHub presence, pricing, and 15 more developer resources.

🌐 Visit website 📡 Source on GitHub

30.3/100 thin ▬ flat Agent 24/100 agent aware Full breakdown ↓
scored 2026-08-21 · rubric v0.12.0

AccessFreeOpen⚡ Free to try

17 APIs

DeFi StablecoinsFractional-AlgorithmicEthereumfrxETHLiquid StakingAMOCollateral

Kin Score

Kin Score How this is scored →
scored 2026-08-21 · rubric v0.12.0

Composite quality — 30.3/100 · thin

Contract Quality 12.2 / 25

Developer Ergonomics 4.3 / 20

Access Clarity 5.8 / 20

Operational Transparency 0.7 / 13

Contract Governance 0.0 / 12

Discoverability 7.4 / 10

Agent readiness — 24/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 7 / 7

Rate-Limit Signaling 7 / 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

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/frax: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 17

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

Open Collections 18

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

Rate Limits 1

Documented rate limits and quota policies.

Rate Limits

0 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Documentation 4

Reference material describing how the API behaves

Documentation

Documentation

API Documentation

API Documentation

OpenAPI

OpenAPI

OpenAPI

OpenAPI

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub

GitHub

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Discord

Discord

RateLimits

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

TermsOfService

Pricing

Plans

FinOps

Company 2

The organization behind the API

Website

Website

Twitter

Twitter

Other 3

Properties that don't map to a standard resource type

Subgraphs

Subgraphs

Governance

Governance

Telegram

Source (apis.yml)

name: Frax Finance
description: 'Frax Finance is a fractional-algorithmic stablecoin protocol offering FRAX (USD-pegged stablecoin), FPI (Frax
  Price Index stablecoin pegged to a consumer goods basket), frxETH (liquid ETH staking derivative), and supporting DeFi infrastructure
  including Fraxswap, Fraxlend, and Fraxtal L2. The protocol operates Algorithmic Market Operations (AMOs) to manage collateral
  and generate revenue, and exposes public REST APIs for querying token supply, collateral ratios, AMO positions, pool APRs,
  and frxETH staking analytics.

  '
accessModel:
  pricing: free
  onboarding: open
  trial: false
  try_now: true
  public: true
  label: Free · Open access
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/frax.png
url: https://raw.githubusercontent.com/api-evangelist/frax/refs/heads/main/apis.yml
created: '2026-06-14'
modified: '2026-06-14'
specificationVersion: '0.23'
tags:
- DeFi
- Stablecoins
- Fractional-Algorithmic
- Ethereum
- frxETH
- Liquid Staking
- AMO
- Collateral
tags_raw:
- DeFi
- Stablecoin
- Fractional-Algorithmic
- Ethereum
- frxETH
- Liquid Staking
- AMO
- Collateral
apis:
- aid: frax:frax-v1-gauge-api
  name: Frax Finance v1-gauge API
  description: The v1-gauge API from Frax Finance — 2 operation(s) for v1-gauge.
  humanURL: https://docs.frax.finance/smart-contracts/api
  baseURL: https://api.frax.finance
  tags:
  - v1-gauge
  properties:
  - type: OpenAPI
    url: openapi/frax-v1-gauge-api-openapi.yml
  - type: Documentation
    url: https://docs.frax.finance/smart-contracts/api
- aid: frax:frax-v1-prices-api
  name: Frax Finance v1-prices API
  description: The v1-prices API from Frax Finance — 7 operation(s) for v1-prices.
  humanURL: https://docs.frax.finance/smart-contracts/api
  baseURL: https://api.frax.finance
  tags:
  - v1-prices
  properties:
  - type: OpenAPI
    url: openapi/frax-v1-prices-api-openapi.yml
  - type: Documentation
    url: https://docs.frax.finance/smart-contracts/api
- aid: frax:frax-v1-protocol-api
  name: Frax Finance v1-protocol API
  description: The v1-protocol API from Frax Finance — 4 operation(s) for v1-protocol.
  humanURL: https://docs.frax.finance/smart-contracts/api
  baseURL: https://api.frax.finance
  tags:
  - v1-protocol
  properties:
  - type: OpenAPI
    url: openapi/frax-v1-protocol-api-openapi.yml
  - type: Documentation
    url: https://docs.frax.finance/smart-contracts/api
- aid: frax:frax-v1-staking-api
  name: Frax Finance v1-staking API
  description: The v1-staking API from Frax Finance — 6 operation(s) for v1-staking.
  humanURL: https://docs.frax.finance/smart-contracts/api
  baseURL: https://api.frax.finance
  tags:
  - v1-staking
  properties:
  - type: OpenAPI
    url: openapi/frax-v1-staking-api-openapi.yml
  - type: Documentation
    url: https://docs.frax.finance/smart-contracts/api
- aid: frax:frax-v1-vefpis-api
  name: Frax Finance v1-vefpis API
  description: The v1-vefpis API from Frax Finance — 2 operation(s) for v1-vefpis.
  humanURL: https://docs.frax.finance/smart-contracts/api
  baseURL: https://api.frax.finance
  tags:
  - v1-vefpis
  properties:
  - type: OpenAPI
    url: openapi/frax-v1-vefpis-api-openapi.yml
  - type: Documentation
    url: https://docs.frax.finance/smart-contracts/api
- aid: frax:frax-v1-vefxs-api
  name: Frax Finance v1-vefxs API
  description: The v1-vefxs API from Frax Finance — 2 operation(s) for v1-vefxs.
  humanURL: https://docs.frax.finance/smart-contracts/api
  baseURL: https://api.frax.finance
  tags:
  - v1-vefxs
  properties:
  - type: OpenAPI
    url: openapi/frax-v1-vefxs-api-openapi.yml
  - type: Documentation
    url: https://docs.frax.finance/smart-contracts/api
- aid: frax:frax-v2-fpifpis-api
  name: Frax Finance v2-fpifpis API
  description: The v2-fpifpis API from Frax Finance — 7 operation(s) for v2-fpifpis.
  humanURL: https://docs.frax.finance/smart-contracts/api
  baseURL: https://api.frax.finance
  tags:
  - v2-fpifpis
  properties:
  - type: OpenAPI
    url: openapi/frax-v2-fpifpis-api-openapi.yml
  - type: Documentation
    url: https://docs.frax.finance/smart-contracts/api
- aid: frax:frax-v2-frax-api
  name: Frax Finance v2-frax API
  description: The v2-frax API from Frax Finance — 6 operation(s) for v2-frax.
  humanURL: https://docs.frax.finance/smart-contracts/api
  baseURL: https://api.frax.finance
  tags:
  - v2-frax
  properties:
  - type: OpenAPI
    url: openapi/frax-v2-frax-api-openapi.yml
  - type: Documentation
    url: https://docs.frax.finance/smart-contracts/api
- aid: frax:frax-v2-fraxferry-api
  name: Frax Finance v2-fraxferry API
  description: The v2-fraxferry API from Frax Finance — 7 operation(s) for v2-fraxferry.
  humanURL: https://docs.frax.finance/smart-contracts/api
  baseURL: https://api.frax.finance
  tags:
  - v2-fraxferry
  properties:
  - type: OpenAPI
    url: openapi/frax-v2-fraxferry-api-openapi.yml
  - type: Documentation
    url: https://docs.frax.finance/smart-contracts/api
- aid: frax:frax-v2-fraxswap-api
  name: Frax Finance v2-fraxswap API
  description: The v2-fraxswap API from Frax Finance — 12 operation(s) for v2-fraxswap.
  humanURL: https://docs.frax.finance/smart-contracts/api
  baseURL: https://api.frax.finance
  tags:
  - v2-fraxswap
  properties:
  - type: OpenAPI
    url: openapi/frax-v2-fraxswap-api-openapi.yml
  - type: Documentation
    url: https://docs.frax.finance/smart-contracts/api
- aid: frax:frax-v2-frxeth-api
  name: Frax Finance v2-frxeth API
  description: The v2-frxeth API from Frax Finance — 12 operation(s) for v2-frxeth.
  humanURL: https://docs.frax.finance/smart-contracts/api
  baseURL: https://api.frax.finance
  tags:
  - v2-frxeth
  properties:
  - type: OpenAPI
    url: openapi/frax-v2-frxeth-api-openapi.yml
  - type: Documentation
    url: https://docs.frax.finance/smart-contracts/api
- aid: frax:frax-v2-frxusd-api
  name: Frax Finance v2-frxusd API
  description: The v2-frxusd API from Frax Finance — 4 operation(s) for v2-frxusd.
  humanURL: https://docs.frax.finance/smart-contracts/api
  baseURL: https://api.frax.finance
  tags:
  - v2-frxusd
  properties:
  - type: OpenAPI
    url: openapi/frax-v2-frxusd-api-openapi.yml
  - type: Documentation
    url: https://docs.frax.finance/smart-contracts/api
- aid: frax:frax-v2-fxb-api
  name: Frax Finance v2-fxb API
  description: The v2-fxb API from Frax Finance — 6 operation(s) for v2-fxb.
  humanURL: https://docs.frax.finance/smart-contracts/api
  baseURL: https://api.frax.finance
  tags:
  - v2-fxb
  properties:
  - type: OpenAPI
    url: openapi/frax-v2-fxb-api-openapi.yml
  - type: Documentation
    url: https://docs.frax.finance/smart-contracts/api
- aid: frax:frax-v2-gauges-api
  name: Frax Finance v2-gauges API
  description: The v2-gauges API from Frax Finance — 8 operation(s) for v2-gauges.
  humanURL: https://docs.frax.finance/smart-contracts/api
  baseURL: https://api.frax.finance
  tags:
  - v2-gauges
  properties:
  - type: OpenAPI
    url: openapi/frax-v2-gauges-api-openapi.yml
  - type: Documentation
    url: https://docs.frax.finance/smart-contracts/api
- aid: frax:frax-v2-gov-api
  name: Frax Finance v2-gov API
  description: The v2-gov API from Frax Finance — 5 operation(s) for v2-gov.
  humanURL: https://docs.frax.finance/smart-contracts/api
  baseURL: https://api.frax.finance
  tags:
  - v2-gov
  properties:
  - type: OpenAPI
    url: openapi/frax-v2-gov-api-openapi.yml
  - type: Documentation
    url: https://docs.frax.finance/smart-contracts/api
- aid: frax:frax-v2-lfrax-api
  name: Frax Finance v2-lfrax API
  description: The v2-lfrax API from Frax Finance — 2 operation(s) for v2-lfrax.
  humanURL: https://docs.frax.finance/smart-contracts/api
  baseURL: https://api.frax.finance
  tags:
  - v2-lfrax
  properties:
  - type: OpenAPI
    url: openapi/frax-v2-lfrax-api-openapi.yml
  - type: Documentation
    url: https://docs.frax.finance/smart-contracts/api
- aid: frax:frax-v2-sfrxusd-api
  name: Frax Finance v2-sfrxusd API
  description: The v2-sfrxusd API from Frax Finance — 4 operation(s) for v2-sfrxusd.
  humanURL: https://docs.frax.finance/smart-contracts/api
  baseURL: https://api.frax.finance
  tags:
  - v2-sfrxusd
  properties:
  - type: OpenAPI
    url: openapi/frax-v2-sfrxusd-api-openapi.yml
  - type: Documentation
    url: https://docs.frax.finance/smart-contracts/api
common:
- type: AgenticAccess
  url: agentic-access/frax-agentic-access.yml
- type: DomainSecurity
  url: security/frax-domain-security.yml
- type: Website
  url: https://frax.finance
- type: Documentation
  url: https://docs.frax.finance
- type: API Documentation
  url: https://docs.frax.finance/smart-contracts/api
- type: OpenAPI
  url: https://api.frax.finance/v1/docs
- type: OpenAPI
  url: https://api.frax.finance/v2/docs
- type: Subgraphs
  url: https://thegraph.com/explorer/profile/0x6e74053a3798e0fc9a9775f7995316b27f21c4d2?view=Subgraphs
- type: GitHub
  url: https://github.com/FraxFinance
- type: Governance
  url: https://gov.frax.finance
- type: Discord
  url: https://discord.com/invite/fraxfinance
- type: Twitter
  url: https://twitter.com/fraxfinance
- type: Telegram
  url: https://t.me/fraxfinance
- type: TermsOfService
  url: https://frax.finance
- type: Pricing
  url: https://frax.finance
- type: RateLimits
  url: https://raw.githubusercontent.com/api-evangelist/frax/refs/heads/main/rate-limits/rate-limits.yml
- type: Plans
  url: https://raw.githubusercontent.com/api-evangelist/frax/refs/heads/main/plans/plans.yml
- type: FinOps
  url: https://raw.githubusercontent.com/api-evangelist/frax/refs/heads/main/finops/finops.yml
maintainers:
- FN: API Evangelist
  url: https://apievangelist.com
  email: info@apievangelist.com

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