1inch

1inch is the leading DEX aggregator. The 1inch Developer Portal exposes 13+ APIs covering Swap (classic, Fusion intent, cross-chain), Orderbook, Balance, Spot Price, Token, Token Details, Portfolio, Gas Price, NFT, Traces, History, Transaction Gateway, Web3 RPC, Charts, and Domains. APIs serve 12+ EVM chains. Authentication via Authorization Bearer header.

1inch publishes 14 API contracts indexed on the APIs.io network, including Balance API, Orderbook API, Portfolio API, and 11 more. Tagged areas include Web3, DeFi, Decentralized Exchange, Aggregator, and Swap.

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

1inch’s developer surface includes engineering blog, authentication, developer portal, documentation, pricing, GitHub presence, and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

28.9/100 thin ▬ flat Agent 20/100 agent aware Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Web3 DeFi Decentralized Exchange Aggregator Swap Multi-Chain Limit Orders Fusion Cross-Chain

Kin Score

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

Composite quality — 28.9/100 · thin

Contract Quality 8.5 / 19

Developer Ergonomics 5.0 / 15

Access Clarity 1.2 / 15

Operational Transparency 1.3 / 10

Contract Governance 1.2 / 9

Discoverability 5.5 / 8

Regulatory Posture 2.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. 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
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

9 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 7.9 — up to +18.4 composite points
Contract Quality scores 45.3 — up to +13.7 composite points
Developer Ergonomics scores 33.3 — up to +13.3 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/one-inch/apis.yml: open an issue on github.com/api-evangelist/one-inch 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 →

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 14

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

1inch Swap API

Quote and swap endpoints supporting classic aggregation, Fusion intent-based swaps, and cross-chain (Fusion+).

1inch Orderbook API

Limit-order placement, query, fill, and cancellation endpoints.

1inch Balance API

Wallet balance lookup across supported EVM chains.

1inch Spot Price API

On-chain spot price feeds for tokens across supported EVM chains.

1inch Token API

Token metadata and discovery endpoints.

1inch Portfolio API

Portfolio composition, P&L, and historical valuation across supported networks.

1inch Gas Price API

Gas price estimates for EIP-1559 across supported EVM chains.

1inch Balance API

The Balance API from 1inch — 1 operation(s) for balance.

1inch Orderbook API

The Orderbook API from 1inch — 2 operation(s) for orderbook.

1inch Portfolio API

The Portfolio API from 1inch — 1 operation(s) for portfolio.

1inch SpotPrice API

The SpotPrice API from 1inch — 1 operation(s) for spotprice.

1inch Swap API

The Swap API from 1inch — 8 operation(s) for swap.

1inch Token API

The Token API from 1inch — 1 operation(s) for token.

1inch Gas Price API

The Gas Price API from 1inch — 1 operation(s) for gas price.

Scroll for all 14

Open Collections 8

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

1inch Developer Portal APIs Balance API

OPEN COLLECTION

1inch Developer Portal APIs Balance GasPrice API

OPEN COLLECTION

1inch Developer Portal APIs Balance Orderbook API

OPEN COLLECTION

1inch Developer Portal APIs Balance Portfolio API

OPEN COLLECTION

1inch Developer Portal APIs Balance SpotPrice API

OPEN COLLECTION

1inch Developer Portal APIs Balance Swap API

OPEN COLLECTION

1inch Developer Portal APIs Balance Token API

OPEN COLLECTION

1inch Developer Portal APIs

OPEN COLLECTION

Scroll for all 8

1inch API pricing

Not yet checked against 1inch's own pricing page. Compiled by API Evangelist on 2026-05-08 from business.1inch.com/pricing; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Developer (Free) freemium	Free
Startup subscription	—
Business subscription	—
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Developer (Free): 1 requests per second
Startup: 10 requests per second
Business: 30 requests per second

Compiled by API Evangelist, not yet checked against 1inch's documentation. All 4 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

One Inch Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

One Inch Rate Limits

4 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

1inch

SLA

FinOps 1

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

One Inch Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

1inch API Rules

51 rules · 49 errors 1 warnings 1 info

SPECTRAL

Security Posture 2

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

One Inch Authentication

http · 1 scheme

SECURITY

One Inch Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

One Inch Agentic Access

15 operations · 1 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Portal

Portal

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LlmsText

LlmsText

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub

GitHub

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Blog

Blog

Website

Website

LinkedIn

Source (apis.yml)

aid: one-inch
url: https://raw.githubusercontent.com/api-evangelist/one-inch/refs/heads/main/apis.yml
name: 1inch
kind: company
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/one-inch.png
tags:
- Web3
- DeFi
- Decentralized Exchange
- Aggregator
- Swap
- Multi-Chain
- Limit Orders
- Fusion
- Cross-Chain
tags_raw:
- Web3
- DeFi
- DEX
- Aggregator
- Swap
- Multi-chain
- Limit Orders
- Fusion
- Cross-chain
created: '2026-05-08'
modified: '2026-10-06'
specificationVersion: '0.23'
description: 1inch is the leading DEX aggregator. The 1inch Developer Portal exposes 13+ APIs covering Swap (classic, Fusion
  intent, cross-chain), Orderbook, Balance, Spot Price, Token, Token Details, Portfolio, Gas Price, NFT, Traces, History,
  Transaction Gateway, Web3 RPC, Charts, and Domains. APIs serve 12+ EVM chains. Authentication via Authorization Bearer header.
apis:
- aid: one-inch:swap-api
  name: 1inch Swap API
  tags:
  - Swap
  - Aggregator
  - Fusion
  - Cross-Chain
  tags_raw:
  - Swap
  - Aggregator
  - Fusion
  - Cross-chain
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://api.1inch.dev/swap/v6.0
  humanURL: https://business.1inch.com/portal/documentation/swap-api
  description: Quote and swap endpoints supporting classic aggregation, Fusion intent-based swaps, and cross-chain (Fusion+).
  properties:
  - type: Documentation
    url: https://business.1inch.com/portal/documentation/swap-api
  x-features:
  - Classic aggregation across 600+ liquidity sources
  - Fusion intent-based swaps (gas-free)
  - Cross-chain Fusion+
  x-use-cases:
  - DeFi wallet swap UI
  - Bot-driven aggregator routes
- aid: one-inch:orderbook-api
  name: 1inch Orderbook API
  tags:
  - Limit Orders
  - Order Book
  tags_raw:
  - Limit Orders
  - Orderbook
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://api.1inch.dev/orderbook/v4.0
  humanURL: https://business.1inch.com/portal/documentation/orderbook-api
  description: Limit-order placement, query, fill, and cancellation endpoints.
  properties:
  - type: Documentation
    url: https://business.1inch.com/portal/documentation/orderbook-api
  x-features:
  - Place / query / cancel limit orders
  - On-chain settlement
  x-use-cases:
  - Limit-order DEX UI
  - Algorithmic bots
- aid: one-inch:balance-api
  name: 1inch Balance API
  tags:
  - Balances
  - Wallets
  tags_raw:
  - Balances
  - Wallet
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://api.1inch.dev/balance/v1.2
  humanURL: https://business.1inch.com/portal/documentation/balance-api
  description: Wallet balance lookup across supported EVM chains.
  properties:
  - type: Documentation
    url: https://business.1inch.com/portal/documentation/balance-api
  x-features:
  - Multi-chain balance queries
  - Token allowances
  x-use-cases:
  - Wallet UIs
  - Pre-swap allowance checks
- aid: one-inch:spot-price-api
  name: 1inch Spot Price API
  tags:
  - Prices
  - Spot
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://api.1inch.dev/price/v1.1
  humanURL: https://business.1inch.com/portal/documentation/spot-price-api
  description: On-chain spot price feeds for tokens across supported EVM chains.
  properties:
  - type: Documentation
    url: https://business.1inch.com/portal/documentation/spot-price-api
  x-features:
  - On-chain TWAP-aware prices
  - Multi-chain
  x-use-cases:
  - Pricing widgets
  - Risk monitoring
- aid: one-inch:token-api
  name: 1inch Token API
  tags:
  - Tokens
  - Metadata
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://api.1inch.dev/token/v1.2
  humanURL: https://business.1inch.com/portal/documentation/token-api
  description: Token metadata and discovery endpoints.
  properties:
  - type: Documentation
    url: https://business.1inch.com/portal/documentation/token-api
  x-features:
  - Symbol / decimals / logo metadata
  - Search
  x-use-cases:
  - Token pickers
  - Wallet token resolvers
- aid: one-inch:portfolio-api
  name: 1inch Portfolio API
  tags:
  - Portfolio
  - Wallets
  tags_raw:
  - Portfolio
  - Wallet
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://api.1inch.dev/portfolio/portfolio/v4
  humanURL: https://business.1inch.com/portal/documentation/portfolio-api
  description: Portfolio composition, P&L, and historical valuation across supported networks.
  properties:
  - type: Documentation
    url: https://business.1inch.com/portal/documentation/portfolio-api
  x-features:
  - Cross-chain portfolio
  - P&L and historical NAV
  x-use-cases:
  - Portfolio dashboards
  - Tax reporting
- aid: one-inch:gas-price-api
  name: 1inch Gas Price API
  tags:
  - Gas
  - Estimation
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://api.1inch.dev/gas-price/v1.5
  humanURL: https://business.1inch.com/portal/documentation/gas-price-api
  description: Gas price estimates for EIP-1559 across supported EVM chains.
  properties:
  - type: Documentation
    url: https://business.1inch.com/portal/documentation/gas-price-api
  x-features:
  - EIP-1559 fee data
  - Multi-chain
  x-use-cases:
  - Wallet gas-fee preview
- aid: one-inch:one-inch-balance-api
  name: 1inch Balance API
  description: The Balance API from 1inch — 1 operation(s) for balance.
  humanURL: https://business.1inch.com/portal/documentation/swap-api
  baseURL: https://api.1inch.dev/swap/v6.0
  tags:
  - Balances
  tags_raw:
  - Balance
  properties:
  - type: OpenAPI
    url: openapi/one-inch-balance-api-openapi.yml
- aid: one-inch:one-inch-orderbook-api
  name: 1inch Orderbook API
  description: The Orderbook API from 1inch — 2 operation(s) for orderbook.
  humanURL: https://business.1inch.com/portal/documentation/swap-api
  baseURL: https://api.1inch.dev/swap/v6.0
  tags:
  - Order Book
  tags_raw:
  - Orderbook
  properties:
  - type: OpenAPI
    url: openapi/one-inch-orderbook-api-openapi.yml
- aid: one-inch:one-inch-portfolio-api
  name: 1inch Portfolio API
  description: The Portfolio API from 1inch — 1 operation(s) for portfolio.
  humanURL: https://business.1inch.com/portal/documentation/swap-api
  baseURL: https://api.1inch.dev/swap/v6.0
  tags:
  - Portfolio
  properties:
  - type: OpenAPI
    url: openapi/one-inch-portfolio-api-openapi.yml
- aid: one-inch:one-inch-spotprice-api
  name: 1inch SpotPrice API
  description: The SpotPrice API from 1inch — 1 operation(s) for spotprice.
  humanURL: https://business.1inch.com/portal/documentation/swap-api
  baseURL: https://api.1inch.dev/swap/v6.0
  tags:
  - Spot Price
  tags_raw:
  - SpotPrice
  properties:
  - type: OpenAPI
    url: openapi/one-inch-spotprice-api-openapi.yml
- aid: one-inch:one-inch-swap-api
  name: 1inch Swap API
  description: The Swap API from 1inch — 8 operation(s) for swap.
  humanURL: https://business.1inch.com/portal/documentation/swap-api
  baseURL: https://api.1inch.dev/swap/v6.0
  tags:
  - Swap
  properties:
  - type: OpenAPI
    url: openapi/one-inch-swap-api-openapi.yml
- aid: one-inch:one-inch-token-api
  name: 1inch Token API
  description: The Token API from 1inch — 1 operation(s) for token.
  humanURL: https://business.1inch.com/portal/documentation/swap-api
  baseURL: https://api.1inch.dev/swap/v6.0
  tags:
  - Tokens
  tags_raw:
  - Token
  properties:
  - type: OpenAPI
    url: openapi/one-inch-token-api-openapi.yml
- aid: one-inch:one-inch-gas-price-api
  name: 1inch Gas Price API
  description: The Gas Price API from 1inch — 1 operation(s) for gas price.
  humanURL: https://business.1inch.com/portal/documentation/swap-api
  baseURL: https://api.1inch.dev/swap/v6.0
  tags:
  - Gas Price
  properties:
  - type: OpenAPI
    url: openapi/one-inch-gas-price-api-openapi.yml
common:
- url: https://1inch.com/blog
  type: Blog
- type: Website
  url: https://www.1inch.com/
- type: AgenticAccess
  url: agentic-access/one-inch-agentic-access.yml
- type: DomainSecurity
  url: security/one-inch-domain-security.yml
- type: Authentication
  url: authentication/one-inch-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/1inch
- type: Portal
  url: https://business.1inch.com/
- type: Documentation
  url: https://business.1inch.com/portal/documentation/overview
- type: Pricing
  url: https://business.1inch.com/pricing
- type: GitHub
  url: https://github.com/1inch
- type: Plans
  url: plans/one-inch-plans-pricing.yml
- type: RateLimits
  url: rate-limits/one-inch-rate-limits.yml
- type: FinOps
  url: finops/one-inch-finops.yml
- type: LlmsText
  url: https://1inch.com/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

1inch API — frequently asked questions

Does 1inch have an API?

Yes. APIs.io lists 14 APIs from 1inch, including 1inch Swap API, 1inch Orderbook API and 1inch Balance API, and 11 more.

Is there an OpenAPI specification for the 1inch API?

Yes. APIs.io indexes 7 OpenAPI specifications for 1inch, each linked for download from this page.

How do I authenticate with the 1inch API?

1inch uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as One Inch Authentication.

How much does the 1inch API cost?

APIs.io lists 4 pricing plans for 1inch, with each plan's price, limits and inclusions under Pricing on this page.

Is the 1inch API ready for AI agents?

1inch has a Kin Score of 28.9 out of 100 (thin) and an Agent Readiness score of 19.6 (agent-aware), scored by API Evangelist on 2026-11-06.

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