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 API contracts indexed on the APIs.io network, including Block API, ENS API, NFT 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 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

34.9/100 thin ▬ flat Agent 33/100 agent ready saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

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

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 34.9/100 · thin

Contract Quality 10.7 / 19

Developer Ergonomics 6.6 / 15

Access Clarity 1.3 / 15

Operational Transparency 1.6 / 10

Contract Governance 0.9 / 9

Discoverability 5.0 / 8

Regulatory Posture 4.0 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 33/100 · 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

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/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/transpose/"><img src="https://apis.io/badge/transpose/card.svg" alt="Transpose on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

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 Ask about this →
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) Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
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) Ask about this →
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks Ask about this →

7 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 8.5 — up to +18.3 composite points Ask about this →
Developer Ergonomics scores 44.0 — up to +11.2 composite points Ask about this →
Operational Transparency scores 16.7 — up to +10.8 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/transpose/apis.yml: open an issue on github.com/api-evangelist/transpose 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 6

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

Transpose Block API

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

Transpose ENS API

Ethereum Name Service records and transfer history.

Transpose NFT API

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

Transpose SQL Analytics API

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

Transpose Token API

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

Transpose Token Prices API

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

Open Collections 6

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

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

Transpose API pricing

Not yet checked against Transpose's own pricing page. Compiled by API Evangelist; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free	Free
Paid Tiers	—

Plan details, limits and sources →

Rate limits

Monthly Credit Allowance: tier-dependent

Compiled by API Evangelist, not yet checked against Transpose's documentation. All 5 limits →

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. Counts are the severity each rule declares, not results of running them.

Transpose — jsonschema rules

5 rules · 4 warn-severity 1 info-severity

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

no policy recorded

SECURITY

Agentic Access (API Evangelist recommendations) 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 2

The organization behind the API

Website

Website

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
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  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: '2026-09-16'
specificationVersion: '0.23'
x-docs-platform: mkdocs
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-17
x-docs-hosting: github-pages
tags:
- Blockchain
- NFT
- Cryptocurrency
- Web3
- Ethereum
- Token Transfers
- Smart Contracts
- Historical Data
- DeFi
- Decentralized Exchange
tags_raw:
- Blockchain
- NFT
- Cryptocurrency
- Web3
- Ethereum
- Token Transfers
- Smart Contracts
- Historical Data
- DeFi
- DEX
apis:
- aid: transpose:transpose-block-api-api
  name: Transpose Block 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
  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
  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
  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
  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
  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: Website
  url: https://transpose.io
- 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

Transpose API — frequently asked questions

Does Transpose have an API?

Yes. APIs.io lists 6 APIs from Transpose, including Transpose Block API, Transpose ENS API and Transpose NFT API, and 3 more.

Is there an OpenAPI specification for the Transpose API?

Yes. APIs.io indexes 6 OpenAPI specifications for Transpose, each linked for download from this page.

How do I authenticate with the Transpose API?

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

How much does the Transpose API cost?

APIs.io lists 2 pricing plans for Transpose, with each plan's price, limits and inclusions under Pricing on this page.

Is the Transpose API ready for AI agents?

Transpose has a Kin Score of 34.9 out of 100 (thin) and an Agent Readiness score of 32.6 (agent-ready), scored by API Evangelist on 2026-11-13.

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/transpose"

All providers

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

Every operation they expose

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

How their score was established

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

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.