The Crypto Data API Directory

Find crypto data APIs for AI agents, MCP tooling evidence, x402 payment-readiness signals, apps, and analytics workflows without assuming every source is already routed through PubFi

448 provider profiles1290 profile evidence items674 API product candidates430 provider families6 categories4 coverage hubs

Claim-safe statuses distinguish Provider Profiles, evaluation-only pages, requested integrations, and available gateway/tooling surfaces without exposing paid procurement, approval, or provider-fetching flows

Live API growth profiles

Automated API growth writes public-safe docs and API metadata into the Supabase public corpus view, then exposes it here by provider, category, docs URL, auth, and commercial notes. Gateway execution remains unsupported until a separate adapter certification path says otherwise.

API candidate directory

Collection status

Collected records
1290
API product candidates
674
Provider families
430
Provider profiles
448
Corpus categories
14
Live DB read
yes
Public view
growth_public_api_corpus_exports
Gateway claim
Not asserted by corpus

Provider profile coverage

Profile evidence comes from public-safe collection-only metadata in the Supabase growth_public_api_corpus_exports view. It does not certify an adapter, assert PubFi gateway availability, create credentials, approve payments, or make a supplier API production-callable.

Collected candidate API metadata for 101 Blockchains; gateway support is not asserted by the corpus.

Provider
101 Blockchains
Category
Uncategorized
Data type
101blockchains.Com Ethereum Api
Chains/protocols
Not listed
Auth
Public Review Needed
Gateway claim
Not asserted by corpus

Public docs

Collected candidate API metadata for 1F; gateway support is not asserted by the corpus.

Provider
1F
Category
Uncategorized
Data type
1f.Ai Blog Ofac Sanctions Screening Crypto Api
Chains/protocols
Not listed
Auth
Public Review Needed
Gateway claim
Not asserted by corpus

Public docs

Collected candidate API metadata for 1inch Business; gateway support is not asserted by the corpus.

Provider
1inch Business
Category
Uncategorized
Data type
Business.1inch.Com Chains Optimism
Chains/protocols
Not listed
Auth
Public Review Needed
Gateway claim
Not asserted by corpus

Public docs

Collected candidate API metadata for 1inch Business; gateway support is not asserted by the corpus.

Provider
1inch Business
Category
Uncategorized
Data type
Business.1inch.Com Portal Documentation Apis Portfolio Introduction
Chains/protocols
Not listed
Auth
Public Review Needed
Gateway claim
Not asserted by corpus

Public docs

Collected candidate API metadata for 1inch Business; gateway support is not asserted by the corpus.

Provider
1inch Business
Category
Uncategorized
Data type
Business.1inch.Com Products Gas Price
Chains/protocols
Not listed
Auth
Public Review Needed
Gateway claim
Not asserted by corpus

Public docs

Collected candidate API metadata for AccuKnox; gateway support is not asserted by the corpus.

Provider
AccuKnox
Category
Uncategorized
Data type
Accuknox.Com Blog Api Security Solutions Enterprise Teams
Chains/protocols
Not listed
Auth
Public Review Needed
Gateway claim
Not asserted by corpus

Public docs

Browse API sources

Search by provider name or narrow the directory by chain, category, pricing model, and auth requirements before you open a provider profile.

Coming soonGateway available

Explorer and indexed Substrate chain API for accounts, extrinsics, governance, staking, and asset data

Coverage
Polkadot
Data types
On-chain state, Governance
Auth
API key
Pricing
Free
Use via PubFi
Needs re-verification
Claim-safe status
Gateway available
Last verified
Indexed onlyProvider Profile

Official Polkadot, Kusama, and Substrate REST API for pre-aggregated ecosystem metrics

Coverage
Polkadot
Data types
On-chain state, Governance
Auth
API key
Pricing
Free
Use via PubFi
Provider Profile
Claim-safe status
Provider Profile
Last verified
Indexed onlyProvider Profile

Indexing and query infrastructure for building custom blockchain data APIs across Substrate, EVM, and other networks

Coverage
Polkadot
Data types
On-chain state
Auth
API key
Pricing
Free
Use via PubFi
Provider Profile
Claim-safe status
Provider Profile
Last verified
Indexed onlyProvider Profile

Decentralized indexing and query services for blockchain application data across Polkadot, Ethereum, and other ecosystems

Coverage
Polkadot
Data types
On-chain state
Auth
API key
Pricing
Free
Use via PubFi
Provider Profile
Claim-safe status
Provider Profile
Last verified
AvailableProvider Profile

Governance discussion, proposal, referendum, and vote context for Polkadot and Kusama communities

Coverage
Polkadot
Data types
Governance
Auth
No auth
Pricing
Free
Use via PubFi
Provider Profile
Claim-safe status
Provider Profile
Last verified
Coming soonProvider Profile

Managed RPC, archive node, and infrastructure services for Polkadot and other blockchain networks

Coverage
Polkadot
Data types
RPC infrastructure, On-chain state
Auth
API key
Pricing
Free
Use via PubFi
Needs re-verification
Claim-safe status
Provider Profile
Last verified
Coming soonProvider Profile

Developer platform for Ethereum and multichain RPC, enhanced APIs, webhooks, and app infrastructure

Coverage
Ethereum
Data types
RPC infrastructure
Auth
API key
Pricing
Free
Use via PubFi
Needs re-verification
Claim-safe status
Provider Profile
Last verified
Indexed onlyProvider Profile

Ethereum and multichain API infrastructure for RPC access, IPFS, and developer network services

Coverage
Ethereum
Data types
RPC infrastructure
Auth
API key
Pricing
Free
Use via PubFi
Provider Profile
Claim-safe status
Provider Profile
Last verified
Coming soonProvider Profile

RPC endpoint and blockchain infrastructure platform spanning Ethereum, Solana, and other networks

Coverage
Ethereum, Solana
Data types
RPC infrastructure
Auth
API key
Pricing
Free
Use via PubFi
Needs re-verification
Claim-safe status
Provider Profile
Last verified
Indexed onlyProvider Profile

RPC and blockchain infrastructure network for developers needing multichain endpoint access

Coverage
Ethereum
Data types
RPC infrastructure
Auth
API key
Pricing
Free
Use via PubFi
Provider Profile
Claim-safe status
Provider Profile
Last verified
Coming soonProvider Profile

Managed blockchain nodes, RPC endpoints, and infrastructure tools for Web3 applications

Coverage
Ethereum
Data types
RPC infrastructure
Auth
API key
Pricing
Free
Use via PubFi
Needs re-verification
Claim-safe status
Provider Profile
Last verified
Coming soonProvider Profile

Institutional blockchain node infrastructure, staking, wallet, and API services for enterprises

Coverage
Ethereum
Data types
RPC infrastructure
Auth
API key
Pricing
Free
Use via PubFi
Needs re-verification
Claim-safe status
Provider Profile
Last verified

Browse all sources

Use the paginated Provider Profile index for crawlable HTML links to every indexable profile, and use the API candidate directory for processed profile evidence.

How to use Discovery

Start with the source directory and filters, then use the status guides and provider-sourced evidence to decide whether to compare, verify, or request a route.

What this directory answers

PubFi Discovery is a crypto data API directory for teams comparing on-chain state, RPC infrastructure, market data, MCP tooling evidence, x402 payment-readiness signals, and agent workflow source fit. It separates source selection, requestable integrations, and current PubFi availability without implying a live PubFi MCP server or x402 payment endpoint.

Primary query
crypto data API directory
AI-agent query support
crypto data API for AI agents
Public status
AI/Codex-processed provider profiles and DB-backed API candidate evidence
Next action
Compare sources or request PubFi to route a missing source
Last verified

How to read claim-safe status

The status row above the directory tells you how complete a Provider Profile is. Use these claim-safe badges to understand whether PubFi is profiling, comparing, or documenting a callable route.

Official-source citations

Cross-check the most decision-relevant claims against provider-owned docs, pricing pages, and public status sources before you route demand.

Subscan API: Primary query
subscan api Source
Subscan API: Primary coverage
Substrate accounts, extrinsics, governance, staking, and asset data Source
Subscan API: Discovery category
On-chain state and governance Source
Subscan API: Auth model
API-key authentication is required for live Subscan API use Source
Subscan API: Commercial fact
Free API access is documented with one API key and a 5 req/sec limit; paid-plan pricing is not public in the support article Source
Subscan API: PubFi status
PubFi gateway route documentation exists for Subscan; upstream account, auth, and route limits still apply Source

Agent, MCP, and x402 source fit

Use these supporting pages when the question is about machine workflows or payment/tooling posture rather than a single source profile.

AI-agent data API demand

Target queries
crypto data API for AI agents; blockchain data API for AI agents
Current use
Compare crypto data sources by coverage, auth model, pricing posture, claim-safe status, and current PubFi availability for agent workflows.
Availability status
Discovery is a source-selection and demand-signal surface; it does not claim autonomous supplier calls for every listed provider.

MCP crypto data demand

Target queries
MCP crypto data API; crypto data MCP server
Current use
Use Discovery and the agent-readable files to compare public MCP or tooling evidence against canonical provider profiles.
Availability status
PubFi does not publish a public MCP server, MCP discovery manifest, or payable MCP tool today.

x402 crypto data demand

Target queries
x402 crypto data API; x402 API marketplace
Current use
Track x402 and machine-payment interest alongside provider coverage, commercial metadata, and requestable integration signals.
Availability status
PubFi does not publish a live x402 payment endpoint, payment requirement, facilitator URL, or supplier payment execution flow today.