Blockfrost
Blockfrost is a RESTful API service providing access to the Cardano blockchain and its ecosystem. It serves as an infrastructure layer for developers building dApps, wallets, NFT platforms, DeFi protocols, and analytics tools on Cardano. Blockfrost provides endpoints for querying blocks, transactions, accounts, addresses, native assets, epochs, governance data, and IPFS storage, supporting both mainnet and testnet networks.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Blockfrost the way a machine reads it — 147 machine-readable artifacts across 2 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Blockfrost scores 46.9/100 (developing), with a separate agent-readiness read of 25/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-10 · rubric v0.20.0
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How we profile Blockfrost
Each block below is one kind of artifact we hold for Blockfrost. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 20
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Blockfrost Cardano » Accounts API
The Cardano » Accounts API from Blockfrost — 12 operation(s) for cardano » accounts.
Blockfrost Cardano » Addresses API
The Cardano » Addresses API from Blockfrost — 7 operation(s) for cardano » addresses.
Blockfrost Cardano » Assets API
The Cardano » Assets API from Blockfrost — 7 operation(s) for cardano » assets.
Blockfrost Cardano » Blocks API
The Cardano » Blocks API from Blockfrost — 11 operation(s) for cardano » blocks.
Blockfrost Cardano » Epochs API
The Cardano » Epochs API from Blockfrost — 10 operation(s) for cardano » epochs.
Blockfrost Cardano » Governance API
The Cardano » Governance API from Blockfrost — 17 operation(s) for cardano » governance.
Blockfrost Cardano » Ledger API
The Cardano » Ledger API from Blockfrost — 1 operation(s) for cardano » ledger.
Blockfrost Cardano » Mempool API
The Cardano » Mempool API from Blockfrost — 3 operation(s) for cardano » mempool.
Blockfrost Cardano » Metadata API
The Cardano » Metadata API from Blockfrost — 3 operation(s) for cardano » metadata.
Blockfrost Cardano » Network API
The Cardano » Network API from Blockfrost — 2 operation(s) for cardano » network.
Blockfrost Cardano » Pools API
The Cardano » Pools API from Blockfrost — 12 operation(s) for cardano » pools.
Blockfrost Cardano » Scripts API
The Cardano » Scripts API from Blockfrost — 7 operation(s) for cardano » scripts.
Blockfrost Cardano » Transactions API
The Cardano » Transactions API from Blockfrost — 14 operation(s) for cardano » transactions.
Blockfrost Cardano » Utilities API
The Cardano » Utilities API from Blockfrost — 3 operation(s) for cardano » utilities.
Blockfrost Health API
The Health API from Blockfrost — 3 operation(s) for health.
Blockfrost IPFS » Add API
The IPFS » Add API from Blockfrost — 1 operation(s) for ipfs » add.
Blockfrost IPFS » Gateway API
The IPFS » Gateway API from Blockfrost — 1 operation(s) for ipfs » gateway.
Blockfrost IPFS » Pins API
The IPFS » Pins API from Blockfrost — 4 operation(s) for ipfs » pins.
Blockfrost Metrics API
The Metrics API from Blockfrost — 2 operation(s) for metrics.
Blockfrost Nut.link API
The Nut.link API from Blockfrost — 4 operation(s) for nut.link.
Scroll within the panel for all 20 ·
Postman Collections 20
A runnable collection turns the contract into something a developer can execute in seconds. We profile them because the fastest way to trust an API is to make a real call against it.
Ready-to-run Postman collections for exercising this provider's APIs.
Scroll within the panel for all 20 ·
Open Collections 21
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONBlockfrost.io ~ API Documentation Cardano » Accounts API
OPEN COLLECTIONScroll within the panel for all 21 ·
GraphQL 1
Where a provider ships GraphQL, the schema is the contract. We profile it alongside the REST surface so the whole interface is legible in one place.
GraphQL schemas published by this provider.
Blockfrost GraphQL Schema
This is a conceptual GraphQL schema for the [Blockfrost API](https://docs.blockfrost.io/), a RESTful infrastructure service that provides access to the Cardano blockchain and it...
GRAPHQLPricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Blockfrost Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Blockfrost Finops
FINOPSFeatures 7
The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.
Notable capabilities this provider offers.
Cardano Blockchain Access
Query blocks, transactions, slots, epochs, accounts, and addresses on the Cardano mainnet and testnet networks.
Native Asset Support
Full support for Cardano native assets including fungible tokens, NFTs, and multi-asset UTXOs with on-chain metadata (CIP-25, CIP-68).
Stake Pool and Delegation Data
Query stake pool information, delegation history, rewards, and account activity for Cardano staking workflows.
Governance Data
Access Cardano governance data including proposals, DRep registrations, and voting activity introduced in the Conway era.
IPFS Integration
Built-in IPFS API for storing and retrieving off-chain NFT metadata and other content via Blockfrost's IPFS gateway.
Multi-Network Support
Single API surface covering Cardano mainnet, preview testnet, preprod testnet, and the Midnight blockchain.
Transaction Submission
Submit signed transactions directly to the Cardano network via the Blockfrost API without running a local node.
Scroll within the panel for all 7 ·
Semantic Vocabularies 1
JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.
JSON-LD contexts and semantic vocabularies used across these APIs.
Blockfrost Context
JSON-LDSpectral Rules 2
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
Blockfrost API Rules
SPECTRALBlockfrost API Rules
SPECTRALJSON Schema 20
Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.
Standalone JSON Schema definitions for this provider's data models.
block_content_addresses
JSON SCHEMAblock_content_array
JSON SCHEMAblock_content
JSON SCHEMAblock_content_txs_cbor
JSON SCHEMAblock_content_txs
JSON SCHEMAdrep_delegators
JSON SCHEMAdrep_metadata
JSON SCHEMAdrep
JSON SCHEMAdrep_updates
JSON SCHEMAdrep_votes
JSON SCHEMAdreps
JSON SCHEMAgenesis_content
JSON SCHEMAonchain_metadata_cip25
JSON SCHEMAonchain_metadata_cip68_ft_333
JSON SCHEMAonchain_metadata_cip68_nft_222
JSON SCHEMAonchain_metadata_cip68_rft_444
JSON SCHEMAproposal_parameters
JSON SCHEMAproposal
JSON SCHEMAproposal_withdrawals
JSON SCHEMAproposals
JSON SCHEMAScroll within the panel for all 20 ·
JSON Structure 20
JSON Structure captures the data shapes in a form built for tooling — a complement to JSON Schema that keeps the model machine-legible.
JSON Structure definitions describing this provider's data shapes.
Blockfrost Block Content Addresses Structure
JSON STRUCTUREBlockfrost Block Content Array Structure
JSON STRUCTUREBlockfrost Block Content Structure
JSON STRUCTUREBlockfrost Block Content Txs Cbor Structure
JSON STRUCTUREBlockfrost Block Content Txs Structure
JSON STRUCTUREBlockfrost Drep Delegators Structure
JSON STRUCTUREBlockfrost Drep Metadata Structure
JSON STRUCTUREBlockfrost Drep Structure
JSON STRUCTUREBlockfrost Drep Updates Structure
JSON STRUCTUREBlockfrost Drep Votes Structure
JSON STRUCTUREBlockfrost Dreps Structure
JSON STRUCTUREBlockfrost Genesis Content Structure
JSON STRUCTUREBlockfrost Onchain Metadata Cip25 Structure
JSON STRUCTUREBlockfrost Onchain Metadata Cip68 Ft 333 Structure
JSON STRUCTUREBlockfrost Onchain Metadata Cip68 Nft 222 Structure
JSON STRUCTUREBlockfrost Onchain Metadata Cip68 Rft 444 Structure
JSON STRUCTUREBlockfrost Proposal Parameters Structure
JSON STRUCTUREBlockfrost Proposal Structure
JSON STRUCTUREBlockfrost Proposal Withdrawals Structure
JSON STRUCTUREBlockfrost Proposals Structure
JSON STRUCTUREScroll within the panel for all 20 ·
Examples 20
Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.
Example request and response payloads for these APIs.
Blockfrost Drep Example
EXAMPLEBlockfrost Dreps Example
EXAMPLEBlockfrost Proposal Example
EXAMPLEBlockfrost Proposals Example
EXAMPLEScroll within the panel for all 20 ·
Security Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Use Cases 5
What developers actually build with this provider — captured so the catalogue answers 'what is this for', not just 'what does this expose'.
What developers build with this provider.
dApp Development
Developers build Cardano dApps using Blockfrost to query blockchain state, submit transactions, and interact with smart contracts.
NFT Platform Integration
NFT marketplaces and minting platforms use Blockfrost to track asset minting, transfers, and metadata across the Cardano network.
DeFi Protocol Building
DeFi protocols integrate Blockfrost to monitor liquidity pool states, track DEX transactions, and manage smart contract interactions.
Wallet Development
Cardano wallet applications use Blockfrost to fetch UTXOs, balances, transaction history, and submit transactions.
Blockchain Analytics
Analytics platforms query Blockfrost for on-chain data including block history, epoch statistics, and network activity metrics.
Integrations 4
Pre-built integrations with other platforms tell you where this provider already fits in a stack.
Pre-built integrations with other platforms and tools.
Mesh SDK
The Mesh JavaScript/TypeScript SDK integrates with Blockfrost as a provider for Cardano dApp development.
Lucid Evolution
Lucid Evolution (TypeScript library) supports Blockfrost as a blockchain provider for transaction building and submission.
PyCardano
PyCardano Python library uses Blockfrost as a chain context provider for Cardano smart contract development.
Cardano Serialization Library
The Cardano Serialization Library (CSL) pairs with Blockfrost for transaction construction and UTXO management.
Resources
Every other property we hold for Blockfrost — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 2
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 2
Pagination, idempotency, versioning, errors, and events
Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 3
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
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This is an independent, third-party profile of Blockfrost, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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