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
38.7/100 thin ▬ flat Agent 37/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumSelf serve⚡ Free to try
10 APIs
blockchainBaseL2explorerEthereumEVMtransactionstokenssmart contracts

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 38.7/100 · thin
Contract Quality 15.7 / 25
Developer Ergonomics 3.5 / 20
Commercial Clarity 12.1 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 37/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
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

Pricing Plans 1

Published pricing tiers and plan structures.

Plans

7 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.

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
- 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: '0.19'
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:
  - 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:
  - 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