Transpose

Historical blockchain data REST API providing access to transaction history, token transfers, NFT metadata, smart contract events, DEX swaps, and price data across Ethereum and other EVM-compatible chains. Offers five enterprise-grade REST APIs plus a SQL Analytics API for querying indexed blockchain data across Ethereum, Polygon, Optimism, Base, Arbitrum, Avalanche, BSC, Bitcoin, and Tron.

Transpose publishes 6 APIs on the APIs.io network, including Block API API, ENS API API, NFT API API, and 3 more. Tagged areas include Blockchain, NFT, Cryptocurrency, Web3, and Ethereum.

The Transpose catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Transpose’s developer surface includes authentication, developer portal, documentation, getting-started guide, pricing, engineering blog, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub

42.8/100 developing ▬ flat Agent 31/100 agent ready saas Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs

Blockchain NFT Cryptocurrency Web3 Ethereum Token Transfers Smart Contracts Historical Data DeFi DEX

Kin Score

Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0

Composite quality — 42.8/100 · developing

Contract Quality 14.2 / 23

Developer Ergonomics 7.9 / 18

Access Clarity 6.2 / 18

Operational Transparency 3.7 / 12

Contract Governance 1.1 / 11

Discoverability 6.2 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 31/100 · agent ready

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 8 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

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.

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/transpose: 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 →

APIs 6

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

Transpose Block API API

Low-level blockchain primitives including accounts, blocks, transactions, logs, and traces across EVM chains.

Transpose ENS API API

Ethereum Name Service records and transfer history.

Transpose NFT API API

NFT collections, ownership, sales, and transfers for ERC-721 and ERC-1155 tokens.

Transpose SQL Analytics API API

Custom SQL query interface against Transpose's entire indexed blockchain dataset.

Transpose Token API API

ERC-20, ERC-777, and native token balances, transfers, and DEX swaps.

Transpose Token Prices API API

Real-time and historical OHLC price data for any token including LP tokens.

Open Collections 7

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

API Collection

OPEN COLLECTION

Transpose Block API API

OPEN COLLECTION

Transpose Block API ENS API API

OPEN COLLECTION

Transpose Block API NFT API API

OPEN COLLECTION

Transpose Block API SQL Analytics API API

OPEN COLLECTION

Transpose Block API Token API API

OPEN COLLECTION

Transpose Block API Token Prices API API

OPEN COLLECTION

Scroll for all 7

Pricing Plans 1

Published pricing tiers and plan structures.

Plans

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Rate Limits

5 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.

Apis Context

0 classes · 0 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Transpose API Rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 4

Standalone JSON Schema definitions for this provider's data models.

NFT Transfer

10 properties

JSON SCHEMA

SQL Query Request

1 properties

JSON SCHEMA

Token Transfer

8 properties

JSON SCHEMA

Transaction

12 properties

JSON SCHEMA

Examples 5

Example request and response payloads for these APIs.

Nft Transfers Request

5 fields

EXAMPLE

Nft Transfers Response

4 fields

EXAMPLE

Sql Query Request

5 fields

EXAMPLE

Sql Query Response

4 fields

EXAMPLE

Token Price Response

5 fields

EXAMPLE

Security Posture 3

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

Transpose Authentication

apiKey · 1 scheme

SECURITY

Transpose Domain Security

TLSv1.3 · HSTS · DNSSEC

SECURITY

Transpose Vulnerability Disclosure

disclosure policy published

SECURITY

Agentic Access 1

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

Transpose Agentic Access

21 operations · 1 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Portal

Portal

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 4

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

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 1

The organization behind the API

Blog

Blog

Source (apis.yml)

name: Transpose
description: Historical blockchain data REST API providing access to transaction history, token transfers, NFT metadata, smart
  contract events, DEX swaps, and price data across Ethereum and other EVM-compatible chains. Offers five enterprise-grade
  REST APIs plus a SQL Analytics API for querying indexed blockchain data across Ethereum, Polygon, Optimism, Base, Arbitrum,
  Avalanche, BSC, Bitcoin, and Tron.
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
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/transpose.png
url: https://raw.githubusercontent.com/api-evangelist/transpose/refs/heads/main/apis.yml
created: '2026-06-14'
modified: '2026-06-14'
specificationVersion: '0.23'
tags:
- Blockchain
- NFT
- Cryptocurrency
- Web3
- Ethereum
- Token Transfers
- Smart Contracts
- Historical Data
- DeFi
- DEX
apis:
- aid: transpose:transpose-block-api-api
  name: Transpose Block API API
  description: Low-level blockchain primitives including accounts, blocks, transactions, logs, and traces across EVM chains.
  humanURL: https://docs.transpose.io/
  baseURL: https://api.transpose.io
  tags:
  - Block API
  properties:
  - type: OpenAPI
    url: openapi/transpose-block-api-api-openapi.yml
  - type: Documentation
    url: https://docs.transpose.io/
  - type: Documentation
    url: https://docs.transpose.io/verified-endpoints/token-api/overview/
  - type: Documentation
    url: https://docs.transpose.io/verified-endpoints/token-prices-api/overview/
- aid: transpose:transpose-ens-api-api
  name: Transpose ENS API API
  description: Ethereum Name Service records and transfer history.
  humanURL: https://docs.transpose.io/
  baseURL: https://api.transpose.io
  tags:
  - ENS API
  properties:
  - type: OpenAPI
    url: openapi/transpose-ens-api-api-openapi.yml
  - type: Documentation
    url: https://docs.transpose.io/
  - type: Documentation
    url: https://docs.transpose.io/verified-endpoints/token-api/overview/
  - type: Documentation
    url: https://docs.transpose.io/verified-endpoints/token-prices-api/overview/
- aid: transpose:transpose-nft-api-api
  name: Transpose NFT API API
  description: NFT collections, ownership, sales, and transfers for ERC-721 and ERC-1155 tokens.
  humanURL: https://docs.transpose.io/
  baseURL: https://api.transpose.io
  tags:
  - NFT API
  properties:
  - type: OpenAPI
    url: openapi/transpose-nft-api-api-openapi.yml
  - type: Documentation
    url: https://docs.transpose.io/
  - type: Documentation
    url: https://docs.transpose.io/verified-endpoints/token-api/overview/
  - type: Documentation
    url: https://docs.transpose.io/verified-endpoints/token-prices-api/overview/
- aid: transpose:transpose-sql-analytics-api-api
  name: Transpose SQL Analytics API API
  description: Custom SQL query interface against Transpose's entire indexed blockchain dataset.
  humanURL: https://docs.transpose.io/
  baseURL: https://api.transpose.io
  tags:
  - SQL Analytics API
  properties:
  - type: OpenAPI
    url: openapi/transpose-sql-analytics-api-api-openapi.yml
  - type: Documentation
    url: https://docs.transpose.io/
  - type: Documentation
    url: https://docs.transpose.io/verified-endpoints/token-api/overview/
  - type: Documentation
    url: https://docs.transpose.io/verified-endpoints/token-prices-api/overview/
- aid: transpose:transpose-token-api-api
  name: Transpose Token API API
  description: ERC-20, ERC-777, and native token balances, transfers, and DEX swaps.
  humanURL: https://docs.transpose.io/
  baseURL: https://api.transpose.io
  tags:
  - Token API
  properties:
  - type: OpenAPI
    url: openapi/transpose-token-api-api-openapi.yml
  - type: Documentation
    url: https://docs.transpose.io/
  - type: Documentation
    url: https://docs.transpose.io/verified-endpoints/token-api/overview/
  - type: Documentation
    url: https://docs.transpose.io/verified-endpoints/token-prices-api/overview/
- aid: transpose:transpose-token-prices-api-api
  name: Transpose Token Prices API API
  description: Real-time and historical OHLC price data for any token including LP tokens.
  humanURL: https://docs.transpose.io/
  baseURL: https://api.transpose.io
  tags:
  - Token Prices API
  properties:
  - type: OpenAPI
    url: openapi/transpose-token-prices-api-api-openapi.yml
  - type: Documentation
    url: https://docs.transpose.io/
  - type: Documentation
    url: https://docs.transpose.io/verified-endpoints/token-api/overview/
  - type: Documentation
    url: https://docs.transpose.io/verified-endpoints/token-prices-api/overview/
common:
- type: AgenticAccess
  url: agentic-access/transpose-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/transpose-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/transpose-domain-security.yml
- type: Authentication
  url: authentication/transpose-authentication.yml
- type: Portal
  url: https://app.transpose.io
- type: Documentation
  url: https://docs.transpose.io/
- type: GettingStarted
  url: https://docs.transpose.io/quickstart/
- type: Pricing
  url: https://www.transpose.io/pricing
- type: Blog
  url: https://www.transpose.io/blogs
- type: Authentication
  url: https://docs.transpose.io/quickstart/
- type: Plans
  url: plans/plans.yml
- type: RateLimits
  url: rate-limits/rate-limits.yml
- type: FinOps
  url: finops/finops.yml
maintainers:
- FN: API Evangelist
  url: https://apievangelist.com
  email: info@apievangelist.com

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