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Sui

Sui is a next-generation Move-based blockchain developed by Mysten Labs, designed for high throughput, low latency, and an asset-oriented programming model. It provides gRPC, GraphQL, and legacy JSON-RPC interfaces for querying objects, transactions, checkpoints, events, and balances on the Sui network. The gRPC API is the current recommended interface, replacing the deprecated JSON-RPC, while GraphQL RPC offers flexible reads for frontends and dashboards.

agent aware

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.

Kin Score

API Evangelist profiles Sui the way a machine reads it — 33 machine-readable artifacts across 11 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 — Sui scores 47.5/100 (developing), with a separate agent-readiness read of 39/100 (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.

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 47.5/100 · developing
Contract Quality 12.4 / 25
Developer Ergonomics 3.5 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 2.7 / 13
Governance 8.8 / 12
Discoverability 10.0 / 10
Agent readiness — 39/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 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

How we profile Sui

Each block below is one kind of artifact we hold for Sui. 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 11

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.

Sui GraphQL RPC

A generally available RPC service for flexible reads, transaction submission, and simulation backed by the Sui General-Purpose Indexer, Consistent Store, full nodes, and Archiva...

Sui JSON-RPC API (Deprecated)

The legacy JSON-RPC API for interacting with Sui full nodes, providing methods for querying objects, transactions, checkpoints, events, balances, and coin metadata. This interfa...

Sui Coin Query API API

The Coin Query API API from Sui — 6 operation(s) for coin query api.

Sui Extended API API

Extended query methods (suix_ prefix)

Sui Governance Read API API

The Governance Read API API from Sui — 6 operation(s) for governance read api.

Sui Move Utils API

The Move Utils API from Sui — 5 operation(s) for move utils.

Sui PubSub API

The PubSub API from Sui — 2 operation(s) for pubsub.

Sui Read API API

Methods for reading blockchain state

Sui Transaction Builder API API

The Transaction Builder API API from Sui — 13 operation(s) for transaction builder api.

Sui Websocket API

The Websocket API from Sui — 2 operation(s) for websocket.

Sui Write API API

Methods for submitting transactions

Scroll within the panel for all 11 ·

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.

Sui GraphQL API

The Sui GraphQL RPC is a generally available read/write interface for the Sui blockchain, backed by the Sui General-Purpose Indexer, Consistent Store, full nodes, and Archival S...

GRAPHQL

Pricing 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.

Plans

2 plans

PLANS

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.

Rate Limits

0 limits

RATE LIMITS

FinOps 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.

Finops

FINOPS

Spectral 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.

Sui API Rules

6 rules · 4 warnings

SPECTRAL

JSON Schema 7

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.

Balance

5 properties

JSON SCHEMA

Checkpoint

11 properties

JSON SCHEMA

Coin

6 properties

JSON SCHEMA

CommitteeInfo

2 properties

JSON SCHEMA

DelegatedStake

3 properties

JSON SCHEMA

TransactionBlockResponse

12 properties

JSON SCHEMA

Sui JSON-RPC Schemas

0 properties

JSON SCHEMA

Scroll within the panel for all 7 ·

Examples 8

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.

All Methods

40 fields

EXAMPLE

Checkpoints

3 fields

EXAMPLE

Coins

5 fields

EXAMPLE

Events

2 fields

EXAMPLE

Move

5 fields

EXAMPLE

Objects

6 fields

EXAMPLE

Staking

3 fields

EXAMPLE

Transactions

7 fields

EXAMPLE

Scroll within the panel for all 8 ·

Security Posture 1

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.

Sui Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

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.

Sui Agentic Access

56 operations · 56 acting

56 operations · 56 acting

AGENTIC

Resources

Every other property we hold for Sui — 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.

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Build 2

SDKs, sample code, and the tooling you integrate with

Access & Security 1

Authentication, authorization, and security posture

Operate 4

Status, limits, changes, and where to get help

Company 2

The organization behind the API

Other 1

Properties that don't map to a standard resource type

← All providers · Data indexed from github.com/api-evangelist/sui · machine-readable index on apis.io