Helius
Helius is a Solana developer platform offering Solana JSON-RPC, the Digital Asset Standard (DAS) API for NFTs/tokens, Enhanced Transactions, Webhooks, LaserStream gRPC streaming, Sender (transaction routing), Photon RPC, and Dedicated Nodes.
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 Helius the way a machine reads it — 30 machine-readable artifacts across 20 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 — Helius scores 49.3/100 (developing), with a separate agent-readiness read of 54/100 (agent ready). 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.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Helius
Each block below is one kind of artifact we hold for Helius. 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.
Helius Solana RPC
Solana JSON-RPC and WebSocket endpoints with enhanced WebSockets, archival data, and staked connections.
Helius Digital Asset Standard (DAS) API
Solana JSON-RPC API for unified asset queries (compressed NFTs, regular NFTs, tokens) including getAsset, getAssetsByOwner, searchAssets.
Helius Enhanced Transactions API
REST API for parsed and human-readable Solana transaction history with token metadata.
Helius Webhooks
REST API for managing webhook subscriptions for Solana on-chain events with parsed transaction payloads.
Helius LaserStream
Low-latency gRPC streaming of Solana account, slot, transaction, and block updates (Geyser-compatible).
Helius Sender
Parallel transaction routing through Helius and Jito for inclusion latency optimization.
Helius Photon RPC (ZK Compression)
Indexed RPC for Solana ZK compression (compressed accounts).
Helius Addresses API
Enhanced on-chain identity data with complete wallet activity and ownership information.
Helius Admin API
The Admin API from Helius — 1 operation(s) for admin.
Helius Balances API
Query token and NFT balances
Helius Funding API
Wallet funding information
Helius Helius API Catalog API
The Helius API Catalog API from Helius — 1 operation(s) for helius api catalog.
Helius History API
Transaction history and balance changes
Helius Identity API
Lookup wallet identities and known addresses
Helius NFTs API
Access comprehensive NFT data including events, collection aggregations, real-time stats, and complete historical activity on Solana.
Helius Sender API
The Sender API from Helius — 2 operation(s) for sender.
Helius Tokens API
Complete token account data, on-chain and off-chain metadata, and detailed information for both fungible and non-fungible Solana tokens.
Helius Transactions API
Enhanced and human-readable transaction histories with decoded instruction data and detailed context.
Helius Transfers API
Token transfer activity
Helius Webhooks API
Configure real-time blockchain notifications for any Solana address, transaction type, or on-chain event with customizable delivery options.
Scroll within the panel for all 20 ·
Open Collections 1
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).
Helius API Catalog
OPEN COLLECTIONPricing 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 six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Helius Plans Pricing
PLANSRate 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.
Helius 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.
Helius Finops
FINOPSEvent Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Helius WebSocket APIs
AsyncAPI 2.6 description of Helius's real-time WebSocket interfaces for Solana. Coverage: * Standard Solana JSON-RPC PubSub subscriptions exposed by Helius RPC. * Helius enhance...
ASYNCAPISpectral Rules 1
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.
Helius API Rules
SPECTRALSecurity Posture 3
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.
Resources
Every other property we hold for Helius — 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.
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 3
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
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