Siebly

Siebly provides JavaScript, Node.js, and TypeScript SDKs for major cryptocurrency exchanges such as Binance, Bybit, OKX, Gate, Bitget, KuCoin, Coinbase, Kraken, HTX, and Hyperliquid. The platform offers REST and WebSocket API integrations, comprehensive documentation, examples, and release notes, enabling developers to build trading applications quickly and securely.

Siebly is listed with 2 APIs on the APIs.io network. Tagged areas include SDK, Cryptocurrency, JavaScript, TypeScript, and Exchange.

The Siebly catalog on APIs.io includes 1 Spectral governance ruleset.

Siebly’s developer surface includes changelog, API reference, documentation, support, engineering blog, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

18.1/100 emerging Agent 13/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

2 APIs

SDK Cryptocurrency JavaScript TypeScript Exchange

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 18.1/100 · emerging

Contract Quality 1.7 / 21

Developer Ergonomics 3.2 / 17

Access Clarity 1.8 / 17

Operational Transparency 1.7 / 11

Contract Governance 2.2 / 10

Discoverability 4.9 / 9

Regulatory Posture 2.9 / 15

Agent readiness — 13/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data regime (on an ambiguous tag, where no other regime matched), so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0

12 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 7.8 — up to +23.1 composite points
Access Clarity scores 10.5 — up to +17.9 composite points
Developer Ergonomics scores 19.0 — up to +16.2 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/siebly/apis.yml: open an issue on github.com/api-evangelist/siebly to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 2

Individual APIs this provider publishes, each with its own machine-readable definition.

Siebly Trading System API

Browse Siebly trading-system reference pages for glossary terms, execution modes, exchange state, runtime workflows, WebSocket behavior, and AI-agent guidance.

Siebly API

Siebly API as documented publicly: 195 operations. Contract generated from the documentation by API Evangelist (2026-11-03); not the provider's own document.

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Siebly API Rules

24 rules · 19 errors 4 warnings 1 info

SPECTRAL

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Siebly Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Siebly Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Spectral

Spectral

Vocabulary

Vocabulary

Conformance

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

GitHubOrganization

GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

SecurityTxt

SecurityTxt

Security

Security

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: siebly
name: Siebly
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  probe_state: unreadable
  source:
  - security
  generated: '2026-11-06'
  method: derived
image: https://siebly.io/wideLogoBannerSieblyLight2.png
description: Siebly provides JavaScript, Node.js, and TypeScript SDKs for major cryptocurrency exchanges such as Binance,
  Bybit, OKX, Gate, Bitget, KuCoin, Coinbase, Kraken, HTX, and Hyperliquid. The platform offers REST and WebSocket API integrations,
  comprehensive documentation, examples, and release notes, enabling developers to build trading applications quickly and
  securely.
url: https://artifacts.apis.io/siebly/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-03 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-03'
modified: '2026-11-03'
tags:
- SDK
- Cryptocurrency
- JavaScript
- TypeScript
- Exchange
tags_raw:
- SDK
- Crypto
- JavaScript
- TypeScript
- Exchanges
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/siebly-rules.yml
- type: Vocabulary
  url: vocabulary/siebly-vocabulary.yml
- type: Conformance
  url: conformance/siebly-conformance.yml
- type: LLMsTxt
  url: llms/siebly-llms.txt
- type: SecurityTxt
  url: well-known/siebly-security.txt
- type: WellKnown
  url: well-known/siebly-well-known.yml
- type: Hosts
  url: hosts/siebly-hosts.yml
- type: Vendors
  url: vendors/siebly-vendors.yml
- type: Security
  url: https://siebly.io/security
- type: SDKs
  url: https://siebly.io/sdk
- type: GitHubOrganization
  url: https://github.com/sieblyio
- type: ChangeLog
  url: https://siebly.io/releases
- type: APIReference
  url: https://siebly.io/reference
- type: VulnerabilityDisclosure
  url: security/siebly-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/siebly-domain-security.yml
- type: Website
  url: https://siebly.io
- type: Documentation
  url: https://siebly.io/sdk/binance/javascript
- type: Support
  url: https://siebly.io/support
- type: TermsOfService
  url: https://siebly.io/terms
- type: PrivacyPolicy
  url: https://siebly.io/privacy
- type: Blog
  url: https://siebly.io/blog
apis:
- name: Siebly Trading System API
  description: Browse Siebly trading-system reference pages for glossary terms, execution modes, exchange state, runtime workflows,
    WebSocket behavior, and AI-agent guidance.
  humanURL: https://siebly.io/reference
  baseURL: null
  aid: siebly:siebly-trading-system-api
- aid: siebly:siebly-api
  name: Siebly API
  description: 'Siebly API as documented publicly: 195 operations. Contract generated from the documentation by API Evangelist
    (2026-11-03); not

    the provider''s own document.'
  humanURL: https://siebly.io/sdk/okx/javascript
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/siebly-openapi-generated.yml
    x-provenance: generated
x-submission-notes: SDK vendor for exchange APIs; tooling-vendor line
x-submission-probe: docs 200 on 2026-11-03
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Documentation is provided as markdown pages without a machine‑readable OpenAPI, GraphQL, or AsyncAPI spec.
  evidence:
  - url: https://siebly.io/reference.md
    status: 200
  checked: '2026-11-03'
x-submitted-by: siebly.dev@outlook.com (apis.io/add, 2026-11-03)
x-enrichment:
  date: '2026-11-03'
  status: enriched
  artifacts_added: 17
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Siebly API — frequently asked questions

Does Siebly have an API?

Yes. APIs.io lists 2 APIs from Siebly, including Siebly Trading System API and Siebly API.

Is there an OpenAPI specification for the Siebly API?

Yes. APIs.io indexes 1 OpenAPI specification for Siebly, each linked for download from this page.

Is the Siebly API ready for AI agents?

Siebly has a Kin Score of 18.1 out of 100 (emerging) and an Agent Readiness score of 12.9 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

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MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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