Synthetix
Synthetix is a derivatives liquidity protocol built on Ethereum and EVM-compatible L2 networks (Optimism, Base). It provides perpetual futures trading with deep onchain liquidity, supporting a wide range of synthetic assets. The platform exposes REST and WebSocket APIs for querying collateral, managing positions, accessing funding rates, monitoring liquidations, tracking staking rewards, and interacting with V3 markets across Optimism and Base.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles Synthetix the way a machine reads it — 28 machine-readable artifacts across 1 API, 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 — Synthetix scores 29.9/100 (thin), with a separate agent-readiness read of 26/100 (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 2026-09-08 · rubric v0.20.0
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How we profile Synthetix
Each block below is one kind of artifact we hold for Synthetix. 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.
Synthetix Info API
Public REST API for accessing Synthetix market data including markets, prices, candles, funding rates, collateral configurations, contract specs, orderbook depth, exchange statu...
Synthetix Trade API
Authenticated REST API for trading operations and account management on the Synthetix perpetuals exchange. Supports order placement, cancellation, position management, collatera...
Synthetix WebSocket Info API
Public WebSocket API for real-time Synthetix market data subscriptions including live market prices, candles, and orderbook depth updates. No authentication required. Supports h...
Synthetix WebSocket Trade API
Authenticated WebSocket API for real-time trading operations and account event streaming on Synthetix. Supports live order management, position updates, account activity subscri...
Synthetix escrowed-balance API
The escrowed-balance API from Synthetix — 4 operation(s) for escrowed-balance.
Synthetix health-check API
The health-check API from Synthetix — 2 operation(s) for health-check.
Synthetix staking API
The staking API from Synthetix — 2 operation(s) for staking.
Synthetix stats API
The stats API from Synthetix — 1 operation(s) for stats.
Synthetix supply API
The supply API from Synthetix — 2 operation(s) for supply.
Synthetix v3 API
The v3 API from Synthetix — 19 operation(s) for v3.
Synthetix vested-balance API
The vested-balance API from Synthetix — 1 operation(s) for vested-balance.
Scroll within the panel for all 11 ·
Open Collections 8
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 COLLECTIONSynthetix escrowed-balance API
OPEN COLLECTIONSynthetix escrowed-balance health-check API
OPEN COLLECTIONSynthetix escrowed-balance staking API
OPEN COLLECTIONSynthetix escrowed-balance stats API
OPEN COLLECTIONSynthetix escrowed-balance supply API
OPEN COLLECTIONSynthetix escrowed-balance v3 API
OPEN COLLECTIONSynthetix escrowed-balance vested-balance API
OPEN COLLECTIONScroll within the panel for all 8 ·
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.
Synthetix GraphQL API
Synthetix exposes GraphQL APIs via The Graph protocol, providing indexed blockchain data for the Synthetix V3 derivatives liquidity protocol. Subgraphs are available for the cor...
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.
Plans
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.
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.
Finops
FINOPSSpectral 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.
Synthetix API Rules
SPECTRALJSON Schema 1
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.
Synthetix API Schemas
JSON SCHEMAExamples 1
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.
Examples
EXAMPLESecurity 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.
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 Synthetix — 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 1
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 1
Pagination, idempotency, versioning, errors, and events
Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 1
Authentication, authorization, and security posture
Operate 2
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
Other 1
Properties that don't map to a standard resource type
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This is an independent, third-party profile of Synthetix, 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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