Frax Finance website screenshot

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, Stablecoin, 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
33.1/100 thin ▬ flat Agent 25/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreeOpen⚡ Free to try
17 APIs
DeFiStablecoinFractional-AlgorithmicEthereumfrxETHLiquid StakingAMOCollateral

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 33.1/100 · thin
Contract Quality 12.0 / 25
Developer Ergonomics 3.0 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 0.7 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 25/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
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.

Frax Finance v1-gauge API

The v1-gauge API from Frax Finance — 2 operation(s) for v1-gauge.

Frax Finance v1-prices API

The v1-prices API from Frax Finance — 7 operation(s) for v1-prices.

Frax Finance v1-protocol API

The v1-protocol API from Frax Finance — 4 operation(s) for v1-protocol.

Frax Finance v1-staking API

The v1-staking API from Frax Finance — 6 operation(s) for v1-staking.

Frax Finance v1-vefpis API

The v1-vefpis API from Frax Finance — 2 operation(s) for v1-vefpis.

Frax Finance v1-vefxs API

The v1-vefxs API from Frax Finance — 2 operation(s) for v1-vefxs.

Frax Finance v2-fpifpis API

The v2-fpifpis API from Frax Finance — 7 operation(s) for v2-fpifpis.

Frax Finance v2-frax API

The v2-frax API from Frax Finance — 6 operation(s) for v2-frax.

Frax Finance v2-fraxferry API

The v2-fraxferry API from Frax Finance — 7 operation(s) for v2-fraxferry.

Frax Finance v2-fraxswap API

The v2-fraxswap API from Frax Finance — 12 operation(s) for v2-fraxswap.

Frax Finance v2-frxeth API

The v2-frxeth API from Frax Finance — 12 operation(s) for v2-frxeth.

Frax Finance v2-frxusd API

The v2-frxusd API from Frax Finance — 4 operation(s) for v2-frxusd.

Frax Finance v2-fxb API

The v2-fxb API from Frax Finance — 6 operation(s) for v2-fxb.

Frax Finance v2-gauges API

The v2-gauges API from Frax Finance — 8 operation(s) for v2-gauges.

Frax Finance v2-gov API

The v2-gov API from Frax Finance — 5 operation(s) for v2-gov.

Frax Finance v2-lfrax API

The v2-lfrax API from Frax Finance — 2 operation(s) for v2-lfrax.

Frax Finance v2-sfrxusd API

The v2-sfrxusd API from Frax Finance — 4 operation(s) for v2-sfrxusd.

Scroll for all 17

Pricing Plans 1

Published pricing tiers and plan structures.

Plans

1 plans

PLANS

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.

Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Frax Finance Context

0 classes · 0 properties

JSON-LD

Security Posture 1

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

Frax Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Frax Agentic Access

96 operations · 3 acting

96 operations · 3 acting

AGENTIC

Resources

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
TermsOfService
 Pricing
Pricing
 Plans
Plans
 FinOps
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
Telegram

Source (apis.yml)

apis.yml Raw ↑ 
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: '0.19'
tags:
- 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