Basescan website screenshot

Basescan

Base L2 blockchain explorer with a REST API for querying Base network transactions, token balances, smart contract ABIs, ERC-20 transfer events, gas prices, and block data. Powered by the Etherscan team and migrated to the unified Etherscan API V2 platform, enabling access to 50+ EVM chains with a single API key using chain ID 8453 for Base.

Basescan publishes 10 APIs on the APIs.io network, including Accounts API, API PRO Endpoints API, Blocks API, and 7 more. Tagged areas include Blockchain, Base, L2, Explorer, and Ethereum.

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

Basescan’s developer surface includes authentication, engineering blog, support, and 6 more developer resources.

🌐 Visit website 📡 Source on GitHub
42.3/100 developing ▬ flat Agent 35/100 agent ready Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
AccessFreemiumSelf serve⚡ Free to try
10 APIs
BlockchainBaseL2ExplorerEthereumEVMTransactionTokensSmart Contracts

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 42.3/100 · developing
Contract Quality 14.9 / 25
Developer Ergonomics 3.8 / 20
Access Clarity 12.1 / 20
Operational Transparency 4.1 / 13
Contract Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 35/100 · 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 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/basescan: 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 10

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

Basescan Accounts API

The Accounts API from Basescan — 12 operation(s) for accounts.

Basescan API PRO Endpoints API

The API PRO Endpoints API from Basescan — 20 operation(s) for api pro endpoints.

Basescan Blocks API

The Blocks API from Basescan — 8 operation(s) for blocks.

Basescan Contracts API

The Contracts API from Basescan — 5 operation(s) for contracts.

Basescan Gas Tracker API

The Gas Tracker API from Basescan — 5 operation(s) for gas tracker.

Basescan Geth/Parity Proxy API

The Geth/Parity Proxy API from Basescan — 14 operation(s) for geth/parity proxy.

Basescan Logs API

The Logs API from Basescan — 3 operation(s) for logs.

Basescan Stats API

The Stats API from Basescan — 13 operation(s) for stats.

Basescan Tokens API

The Tokens API from Basescan — 9 operation(s) for tokens.

Basescan Transactions API

The Transactions API from Basescan — 2 operation(s) for transactions.

Scroll for all 10

Open Collections 11

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

API Collection

OPEN COLLECTION

Basescan Accounts API

OPEN COLLECTION

Basescan Accounts API PRO Endpoints API

OPEN COLLECTION

Basescan Accounts Blocks API

OPEN COLLECTION

Basescan Accounts Contracts API

OPEN COLLECTION

Basescan Accounts Gas Tracker API

OPEN COLLECTION

Basescan Accounts Geth/Parity Proxy API

OPEN COLLECTION

Basescan Accounts Logs API

OPEN COLLECTION

Basescan Accounts Stats API

OPEN COLLECTION

Basescan Accounts Tokens API

OPEN COLLECTION

Basescan Accounts Transactions API

OPEN COLLECTION

Scroll for all 11

Pricing Plans 1

Published pricing tiers and plan structures.

Plans

7 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Rate Limits

7 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 Io Context

0 classes · 0 properties

JSON-LD

Security Posture 2

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

Basescan Authentication

apiKey · 1 scheme

SECURITY

Basescan Domain Security

TLSv1.3 · HSTS · DNSSEC

SECURITY

Agentic Access 1

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

Basescan Agentic Access

71 operations · 1 acting

71 operations · 1 acting

AGENTIC

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 3

Pricing, plans, and the legal terms of use

Plans
Plans
 PrivacyPolicy
PrivacyPolicy
 TermsOfService
TermsOfService

Company 1

The organization behind the API

Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
name: Basescan
description: Base L2 blockchain explorer with a REST API for querying Base network transactions, token balances, smart contract
  ABIs, ERC-20 transfer events, gas prices, and block data. Powered by the Etherscan team and migrated to the unified Etherscan
  API V2 platform, enabling access to 50+ EVM chains with a single API key using chain ID 8453 for Base.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://basescan.org/images/brandassets/basescan-logo-circle.png
tags:
- Blockchain
- Base
- L2
- Explorer
- Ethereum
- EVM
- Transaction
- Tokens
- Smart Contracts
tags_raw:
- blockchain
- Base
- L2
- explorer
- Ethereum
- EVM
- transactions
- tokens
- smart contracts
created: '2026-06-13'
modified: '2026-06-13'
url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: basescan:basescan-accounts-api
  name: Basescan Accounts API
  description: The Accounts API from Basescan — 12 operation(s) for accounts.
  humanURL: https://docs.basescan.org
  baseURL: https://api.basescan.org/api
  tags:
  - Account
  tags_raw:
  - Accounts
  properties:
  - type: OpenAPI
    url: openapi/basescan-accounts-api-openapi.yml
  - type: Documentation
    url: https://docs.basescan.org
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/rate-limits/rate-limits.yml
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/finops/finops.yml
  - type: Signup
    url: https://basescan.org/register
  - type: Login
    url: https://basescan.org/login
  - type: Keys
    url: https://basescan.org/myapikey
  - type: StatusPage
    url: https://etherscan.freshstatus.io
  - type: FAQ
    url: https://info.basescan.org
- aid: basescan:basescan-api-pro-endpoints-api
  name: Basescan API PRO Endpoints API
  description: The API PRO Endpoints API from Basescan — 20 operation(s) for api pro endpoints.
  humanURL: https://docs.basescan.org
  baseURL: https://api.basescan.org/api
  tags:
  - API PRO Endpoints
  properties:
  - type: OpenAPI
    url: openapi/basescan-api-pro-endpoints-api-openapi.yml
  - type: Documentation
    url: https://docs.basescan.org
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/rate-limits/rate-limits.yml
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/finops/finops.yml
  - type: Signup
    url: https://basescan.org/register
  - type: Login
    url: https://basescan.org/login
  - type: Keys
    url: https://basescan.org/myapikey
  - type: StatusPage
    url: https://etherscan.freshstatus.io
  - type: FAQ
    url: https://info.basescan.org
- aid: basescan:basescan-blocks-api
  name: Basescan Blocks API
  description: The Blocks API from Basescan — 8 operation(s) for blocks.
  humanURL: https://docs.basescan.org
  baseURL: https://api.basescan.org/api
  tags:
  - Blocks
  properties:
  - type: OpenAPI
    url: openapi/basescan-blocks-api-openapi.yml
  - type: Documentation
    url: https://docs.basescan.org
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/rate-limits/rate-limits.yml
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/finops/finops.yml
  - type: Signup
    url: https://basescan.org/register
  - type: Login
    url: https://basescan.org/login
  - type: Keys
    url: https://basescan.org/myapikey
  - type: StatusPage
    url: https://etherscan.freshstatus.io
  - type: FAQ
    url: https://info.basescan.org
- aid: basescan:basescan-contracts-api
  name: Basescan Contracts API
  description: The Contracts API from Basescan — 5 operation(s) for contracts.
  humanURL: https://docs.basescan.org
  baseURL: https://api.basescan.org/api
  tags:
  - Contracts
  properties:
  - type: OpenAPI
    url: openapi/basescan-contracts-api-openapi.yml
  - type: Documentation
    url: https://docs.basescan.org
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/rate-limits/rate-limits.yml
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/finops/finops.yml
  - type: Signup
    url: https://basescan.org/register
  - type: Login
    url: https://basescan.org/login
  - type: Keys
    url: https://basescan.org/myapikey
  - type: StatusPage
    url: https://etherscan.freshstatus.io
  - type: FAQ
    url: https://info.basescan.org
- aid: basescan:basescan-gas-tracker-api
  name: Basescan Gas Tracker API
  description: The Gas Tracker API from Basescan — 5 operation(s) for gas tracker.
  humanURL: https://docs.basescan.org
  baseURL: https://api.basescan.org/api
  tags:
  - Gas Tracker
  properties:
  - type: OpenAPI
    url: openapi/basescan-gas-tracker-api-openapi.yml
  - type: Documentation
    url: https://docs.basescan.org
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/rate-limits/rate-limits.yml
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/finops/finops.yml
  - type: Signup
    url: https://basescan.org/register
  - type: Login
    url: https://basescan.org/login
  - type: Keys
    url: https://basescan.org/myapikey
  - type: StatusPage
    url: https://etherscan.freshstatus.io
  - type: FAQ
    url: https://info.basescan.org
- aid: basescan:basescan-geth-parity-proxy-api
  name: Basescan Geth/Parity Proxy API
  description: The Geth/Parity Proxy API from Basescan — 14 operation(s) for geth/parity proxy.
  humanURL: https://docs.basescan.org
  baseURL: https://api.basescan.org/api
  tags:
  - Geth/Parity Proxy
  properties:
  - type: OpenAPI
    url: openapi/basescan-geth-parity-proxy-api-openapi.yml
  - type: Documentation
    url: https://docs.basescan.org
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/rate-limits/rate-limits.yml
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/finops/finops.yml
  - type: Signup
    url: https://basescan.org/register
  - type: Login
    url: https://basescan.org/login
  - type: Keys
    url: https://basescan.org/myapikey
  - type: StatusPage
    url: https://etherscan.freshstatus.io
  - type: FAQ
    url: https://info.basescan.org
- aid: basescan:basescan-logs-api
  name: Basescan Logs API
  description: The Logs API from Basescan — 3 operation(s) for logs.
  humanURL: https://docs.basescan.org
  baseURL: https://api.basescan.org/api
  tags:
  - Logs
  properties:
  - type: OpenAPI
    url: openapi/basescan-logs-api-openapi.yml
  - type: Documentation
    url: https://docs.basescan.org
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/rate-limits/rate-limits.yml
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/finops/finops.yml
  - type: Signup
    url: https://basescan.org/register
  - type: Login
    url: https://basescan.org/login
  - type: Keys
    url: https://basescan.org/myapikey
  - type: StatusPage
    url: https://etherscan.freshstatus.io
  - type: FAQ
    url: https://info.basescan.org
- aid: basescan:basescan-stats-api
  name: Basescan Stats API
  description: The Stats API from Basescan — 13 operation(s) for stats.
  humanURL: https://docs.basescan.org
  baseURL: https://api.basescan.org/api
  tags:
  - Stats
  properties:
  - type: OpenAPI
    url: openapi/basescan-stats-api-openapi.yml
  - type: Documentation
    url: https://docs.basescan.org
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/rate-limits/rate-limits.yml
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/finops/finops.yml
  - type: Signup
    url: https://basescan.org/register
  - type: Login
    url: https://basescan.org/login
  - type: Keys
    url: https://basescan.org/myapikey
  - type: StatusPage
    url: https://etherscan.freshstatus.io
  - type: FAQ
    url: https://info.basescan.org
- aid: basescan:basescan-tokens-api
  name: Basescan Tokens API
  description: The Tokens API from Basescan — 9 operation(s) for tokens.
  humanURL: https://docs.basescan.org
  baseURL: https://api.basescan.org/api
  tags:
  - Tokens
  properties:
  - type: OpenAPI
    url: openapi/basescan-tokens-api-openapi.yml
  - type: Documentation
    url: https://docs.basescan.org
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/rate-limits/rate-limits.yml
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/finops/finops.yml
  - type: Signup
    url: https://basescan.org/register
  - type: Login
    url: https://basescan.org/login
  - type: Keys
    url: https://basescan.org/myapikey
  - type: StatusPage
    url: https://etherscan.freshstatus.io
  - type: FAQ
    url: https://info.basescan.org
- aid: basescan:basescan-transactions-api
  name: Basescan Transactions API
  description: The Transactions API from Basescan — 2 operation(s) for transactions.
  humanURL: https://docs.basescan.org
  baseURL: https://api.basescan.org/api
  tags:
  - Transaction
  tags_raw:
  - Transactions
  properties:
  - type: OpenAPI
    url: openapi/basescan-transactions-api-openapi.yml
  - type: Documentation
    url: https://docs.basescan.org
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/rate-limits/rate-limits.yml
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/finops/finops.yml
  - type: Signup
    url: https://basescan.org/register
  - type: Login
    url: https://basescan.org/login
  - type: Keys
    url: https://basescan.org/myapikey
  - type: StatusPage
    url: https://etherscan.freshstatus.io
  - type: FAQ
    url: https://info.basescan.org
common:
- type: AgenticAccess
  url: agentic-access/basescan-agentic-access.yml
- type: DomainSecurity
  url: security/basescan-domain-security.yml
- type: Authentication
  url: authentication/basescan-authentication.yml
- type: Authentication
  url: https://basescan.org/myapikey
- type: Plans
  url: https://etherscan.io/apis?id=8453
- type: PrivacyPolicy
  url: https://etherscan.io/privacyPolicy
- type: TermsOfService
  url: https://etherscan.io/terms
- type: Blog
  url: https://info.basescan.org
- type: Support
  url: https://info.basescan.org
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com