Tezos

aid: tezos
name: Tezos
description: |
  Tezos is a self-amending blockchain platform that uses on-chain governance
  to upgrade its protocol without hard forks. The primary developer API surface
  is provided by TzKT, an open-source Tezos blockchain indexer built and
  maintained by the Baking Bad team. TzKT exposes a comprehensive REST API
  (https://api.tzkt.io) covering 100+ endpoints for querying blocks, accounts,
  operations, delegations, smart contracts, big maps, tokens (FA1.2/FA2/NFTs),
  staking data, baking rights, governance periods, and protocol metadata on
  the Tezos mainnet. The API supports deep filtering, deep selection, deep
  sorting, CSV exports, and historical data queries at specific block heights.
  A WebSocket API (SignalR) provides real-time subscription streams for new
  blocks and operations. The public TzKT API is freely available with no API
  key required; rate limits apply per IP via standard RateLimit headers and
  HTTP 429 responses. TzKT Pro is available for teams requiring elevated
  quotas and dedicated support. The indexer is MIT-licensed and can also be
  self-hosted against a Tezos node.
type: Index
position: Provider
access: Public
image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
tags:
  - Tezos
  - Blockchain
  - TzKT
  - Baking Bad
  - Cryptocurrency
  - Smart Contracts
  - NFT
  - Tokens
  - Delegations
  - Staking
  - Governance
  - FA1.2
  - FA2
  - WebSocket
url: https://raw.githubusercontent.com/api-evangelist/tezos/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
apis:
  - aid: tezos:tzkt-accounts
    name: TzKT Accounts API
    description: |
      The Accounts API returns profile data for any Tezos address — user
      wallets, delegates (bakers), smart contracts, and ghost accounts.
      Endpoints expose balance, staked amounts, token holdings, contract
      count, first and last activity timestamps, and full paginated operation
      history. A dedicated balance endpoint returns the current XTZ balance as
      a plain integer.
    humanURL: https://api.tzkt.io/#tag/Accounts
    baseURL: https://api.tzkt.io/v1
    tags:
      - Accounts
      - Balances
      - Wallets
      - Delegates
    properties:
      - type: Documentation
        url: https://api.tzkt.io/#tag/Accounts
  - aid: tezos:tzkt-blocks
    name: TzKT Blocks API
    description: |
      The Blocks API exposes Tezos block-level data including block hash,
      level, protocol, timestamp, baker, priority, number of operations,
      volume, fees, and reward metadata. Blocks can be fetched by hash,
      level, or queried in bulk with pagination and sorting. A lightweight
      head endpoint returns the current chain tip with live XTZ exchange
      rates.
    humanURL: https://api.tzkt.io/#tag/Blocks
    baseURL: https://api.tzkt.io/v1
    tags:
      - Blocks
      - Chain
      - Head
    properties:
      - type: Documentation
        url: https://api.tzkt.io/#tag/Blocks
  - aid: tezos:tzkt-operations
    name: TzKT Operations API
    description: |
      The Operations API is the broadest endpoint group in TzKT, covering
      all Tezos operation types: transactions, originations, delegations,
      reveals, endorsements, double-bake evidence, ballot and proposal
      operations, register global constants, set deposits limits, and
      more. Operations can be filtered by sender, target, level, timestamp,
      status, entrypoint, parameter, and many other fields. Supports
      pagination, sorting, and CSV export.
    humanURL: https://api.tzkt.io/#tag/Operations
    baseURL: https://api.tzkt.io/v1
    tags:
      - Operations
      - Transactions
      - Originations
      - Delegations
      - Endorsements
    properties:
      - type: Documentation
        url: https://api.tzkt.io/#tag/Operations
  - aid: tezos:tzkt-contracts
    name: TzKT Contracts API
    description: |
      The Contracts API provides access to Tezos smart contract metadata,
      storage, entrypoints, views, and code. Storage can be retrieved as
      decoded JSON at the current state or at a historical block level.
      Big map keys and values within contract storage are accessible through
      dedicated endpoints. Contract events (emitted via EMIT instruction)
      are also indexed.
    humanURL: https://api.tzkt.io/#tag/Contracts
    baseURL: https://api.tzkt.io/v1
    tags:
      - Contracts
      - Smart Contracts
      - Storage
      - Entrypoints
      - Events
    properties:
      - type: Documentation
        url: https://api.tzkt.io/#tag/Contracts
  - aid: tezos:tzkt-bigmaps
    name: TzKT Big Maps API
    description: |
      The Big Maps API indexes all Tezos big map allocations across smart
      contracts, exposing individual key-value entries with historical
      tracking. Keys and values are decoded from Micheline to JSON. Supports
      bulk queries, filtering by contract, key hash, and active/removed
      status.
    humanURL: https://api.tzkt.io/#tag/BigMaps
    baseURL: https://api.tzkt.io/v1
    tags:
      - Big Maps
      - Smart Contracts
      - Storage
    properties:
      - type: Documentation
        url: https://api.tzkt.io/#tag/BigMaps
  - aid: tezos:tzkt-tokens
    name: TzKT Tokens API
    description: |
      The Tokens API covers FA1.2, FA2, and NFT token standards on Tezos.
      Endpoints expose token metadata, holder balances, and transfer history.
      Token balances can be queried per account or per token contract;
      transfers can be filtered by sender, receiver, token ID, and time
      range. Supports pagination and CSV export.
    humanURL: https://api.tzkt.io/#tag/Tokens
    baseURL: https://api.tzkt.io/v1
    tags:
      - Tokens
      - FA1.2
      - FA2
      - NFT
      - Balances
      - Transfers
    properties:
      - type: Documentation
        url: https://api.tzkt.io/#tag/Tokens
  - aid: tezos:tzkt-delegations-staking
    name: TzKT Delegations and Staking API
    description: |
      The Delegations and Staking APIs expose baking (validation) economics
      on Tezos. Delegations endpoints return active and historical delegation
      assignments between addresses and bakers. Staking endpoints return
      staked balances, staking operations, and per-cycle reward splits.
      Baking rights (endorsing and baking slots) are also queryable per
      baker and per cycle.
    humanURL: https://api.tzkt.io/#tag/Delegators
    baseURL: https://api.tzkt.io/v1
    tags:
      - Delegations
      - Staking
      - Baking
      - Rewards
      - Validators
    properties:
      - type: Documentation
        url: https://api.tzkt.io/#tag/Delegators
  - aid: tezos:tzkt-governance
    name: TzKT Governance API
    description: |
      The Governance API exposes Tezos on-chain governance data including
      voting periods, proposals, ballots, and quorum thresholds. Developers
      can query the history of all protocol upgrade votes, the current voting
      epoch, and per-address ballot submissions.
    humanURL: https://api.tzkt.io/#tag/Voting
    baseURL: https://api.tzkt.io/v1
    tags:
      - Governance
      - Voting
      - Proposals
      - Protocol
    properties:
      - type: Documentation
        url: https://api.tzkt.io/#tag/Voting
  - aid: tezos:tzkt-protocols
    name: TzKT Protocols API
    description: |
      The Protocols API returns metadata for each Tezos protocol version
      including hash, first and last cycle, constants (block time, gas
      limits, baking rewards), and amendment history. Useful for building
      analytics that span multiple protocol eras.
    humanURL: https://api.tzkt.io/#tag/Protocols
    baseURL: https://api.tzkt.io/v1
    tags:
      - Protocols
      - Chain Constants
      - History
    properties:
      - type: Documentation
        url: https://api.tzkt.io/#tag/Protocols
  - aid: tezos:tzkt-websocket
    name: TzKT WebSocket API
    description: |
      The TzKT WebSocket API uses SignalR to deliver real-time push
      notifications to subscribed clients. Channels cover new blocks,
      new and confirmed operations (filtered by sender, target, or
      entrypoint), big map updates, token transfers, and account balance
      changes. Reconnects and message back-fills are handled automatically
      by the SignalR client libraries available for JavaScript, .NET,
      Java, and Python.
    humanURL: https://api.tzkt.io/#tag/WebSocket
    baseURL: wss://api.tzkt.io/v1/events
    tags:
      - WebSocket
      - Real-Time
      - Subscriptions
      - Events
      - SignalR
    properties:
      - type: Documentation
        url: https://api.tzkt.io/#tag/WebSocket
features:
  - name: No Authentication Required
    description: The public TzKT API is open access — no API key or registration needed for the free tier.
  - name: Deep Filtering and Sorting
    description: Every collection endpoint supports multi-field filtering, field selection, and sorting via query parameters.
  - name: Historical Queries
    description: Account balances, storage values, and big map keys can be queried at any historical block level.
  - name: Real-Time WebSocket Streams
    description: SignalR WebSocket channels deliver new blocks, operations, balance changes, and token transfers in real time.
  - name: Token and NFT Indexing
    description: FA1.2, FA2, and NFT token contracts are fully indexed with balances, transfers, and IPFS/HTTP metadata.
  - name: CSV Export
    description: Most collection endpoints support CSV download for offline analytics and reconciliation.
  - name: Self-Hosting
    description: TzKT is MIT-licensed and can be run against a local or remote Tezos node via Docker.
  - name: Multiple Networks
    description: Separate API instances available for mainnet, Ghostnet (testnet), and other Tezos test networks.
useCases:
  - name: Block Explorer Backend
    description: Power blockchain explorers with block, operation, and account data from indexed TzKT endpoints.
  - name: Wallet Integration
    description: Retrieve account balances, token holdings, and operation history for Tezos wallet applications.
  - name: DeFi Analytics
    description: Track token transfers, big map state, and smart contract interactions for DeFi protocol dashboards.
  - name: NFT Marketplace
    description: Index FA2 NFT mints, transfers, and metadata for marketplace discovery and ownership tracking.
  - name: Baking Monitoring
    description: Monitor baker performance, staking rewards, delegation changes, and baking rights assignments.
  - name: Governance Tracking
    description: Follow on-chain proposal submissions, ballot counts, and protocol amendment outcomes.
  - name: Financial Reconciliation
    description: Export CSV operation history for accounting, tax reporting, and portfolio reconciliation.
authentication:
  - type: None
    description: The public TzKT API at api.tzkt.io requires no authentication. Requests are rate-limited by IP address.
common:
  - type: Website
    url: https://tzkt.io
  - type: DeveloperPortal
    url: https://api.tzkt.io
  - type: Documentation
    url: https://api.tzkt.io/
  - type: GitHubOrganization
    url: https://github.com/baking-bad
  - type: GitHubRepository
    url: https://github.com/baking-bad/tzkt
  - type: MainnetAPI
    url: https://api.tzkt.io/v1
  - type: GhostnetAPI
    url: https://api.ghostnet.tzkt.io/v1
  - type: WebSocket
    url: wss://api.tzkt.io/v1/events
  - type: License
    url: https://github.com/baking-bad/tzkt/blob/master/LICENSE
  - type: Status
    url: https://tzkt.io
  - type: Blog
    url: https://baking-bad.org/blog/
  - type: OpenAPI
    url: openapi/openapi.json
  - type: Plans
    url: plans/tezos-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/tezos-rate-limits.yml
  - type: FinOps
    url: finops/tezos-finops.yml
maintainers:
  - FN: Kin Lane
    email: [email protected]