Bitnomial

Bitnomial is a Chicago-based derivatives exchange company that owns and operates U.S. CFTC-regulated subsidiaries — a Designated Contract Market (exchange/DCM), a Derivatives Clearing Organization (clearinghouse/DCO), and a Futures Commission Merchant (clearing brokerage/FCM). It offers leveraged spot, perpetuals, futures, options, and prediction markets on a single regulated venue with crypto margin and settlement. For developers, Bitnomial publishes a public HTTPS REST API (products, orders, fills, block trades, indexes, funding rates, market stats), a real-time WebSocket market-data feed (trade, book, block, status channels), a low-latency binary order-entry protocol (BTP), and a FIX 4.4 API with dropcopy. REST authentication uses HMAC-SHA256 request signing with per-connection credentials. Surfaced as a portfolio company of Electric Capital and enriched by the API Evangelist pipeline.

Bitnomial publishes 1 API on the APIs.io network: Market Data WebSocket API. Tagged areas include Company, Fintech, Cryptocurrency, Derivatives, and Exchange.

The Bitnomial catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Bitnomial’s developer surface includes documentation, API reference, getting-started guide, engineering blog, support, authentication, sandbox, and 18 more developer resources.

🌐 Visit website 📡 Source on GitHub

40.1/100 developing ▬ flat Agent 19/100 agent aware library Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

2 APIs

Company Fintech Cryptocurrency Derivatives Exchange Trading Market Data Futures OptionsCFTC Regulated

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 40.1/100 · developing

Contract Quality 8.9 / 21

Developer Ergonomics 13.4 / 17

Access Clarity 0.0 / 17

Operational Transparency 3.2 / 11

Contract Governance 1.9 / 10

Discoverability 6.5 / 9

Regulatory Posture 5.7 / 15

Agent readiness — 19/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 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

Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data regime, 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/.

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 github.com/api-evangelist/bitnomial: open an issue to ask a question, or submit a pull request to add artifacts. 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.

Bitnomial Exchange REST API

Public HTTPS REST API for the Bitnomial exchange — products and contract specs, orders, fills, block trades, indexes, funding rates, and market statistics. HMAC-SHA256 signed au...

Bitnomial Market Data WebSocket API

Real-time WebSocket market-data feed delivering trade, order book, block trade, and market status messages for subscribed products.

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Bitnomial Market Data WebSocket API

Real-time market-data feed for Bitnomial's CFTC-regulated derivatives exchange. Clients open a WebSocket connection and must send a subscribe message within 10 seconds or they a...

ASYNCAPI

Security Posture 3

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

Bitnomial Authentication

hmac-signed-api-key · 1 scheme

SECURITY

Bitnomial Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Bitnomial Vulnerability Disclosure

disclosure policy published

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Sandbox

Sandbox

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

AsyncAPI

AsyncAPI

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

X-MCPServerCandidate

X-MCPServerCandidate

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

DataModel

Conformance

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

Access & Security 4

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

Operate 2

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: bitnomial
name: Bitnomial
description: Bitnomial is a Chicago-based derivatives exchange company that owns and operates U.S. CFTC-regulated subsidiaries
  — a Designated Contract Market (exchange/DCM), a Derivatives Clearing Organization (clearinghouse/DCO), and a Futures Commission
  Merchant (clearing brokerage/FCM). It offers leveraged spot, perpetuals, futures, options, and prediction markets on a single
  regulated venue with crypto margin and settlement. For developers, Bitnomial publishes a public HTTPS REST API (products,
  orders, fills, block trades, indexes, funding rates, market stats), a real-time WebSocket market-data feed (trade, book,
  block, status channels), a low-latency binary order-entry protocol (BTP), and a FIX 4.4 API with dropcopy. REST authentication
  uses HMAC-SHA256 request signing with per-connection credentials. Surfaced as a portfolio company of Electric Capital and
  enriched by the API Evangelist pipeline.
url: https://raw.githubusercontent.com/api-evangelist/bitnomial/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- electric-capital
x-tier: stub
x-tier-reason: portfolio-lead
deliveryModel:
  model: library
  open_source: false
  commercial: false
  callable_host: false
  label: Library · distributed through package registries, no callable service
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  - sandbox
  generated: '2026-09-03'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
image: https://bitnomial.com/images/social-preview.jpg
tags:
- Company
- Fintech
- Cryptocurrency
- Derivatives
- Exchange
- Trading
- Market Data
- Futures
- Options
- CFTC Regulated
apis:
- name: Bitnomial Exchange REST API
  description: Public HTTPS REST API for the Bitnomial exchange — products and contract specs, orders, fills, block trades,
    indexes, funding rates, and market statistics. HMAC-SHA256 signed authentication; cursor pagination; rate limited to 200
    requests per 5 minutes.
  humanURL: https://bitnomial.com/exchange/docs/api/rest/overview/
  baseURL: https://bitnomial.com/exchange/api/v1/prod
  tags:
  - REST
  - Trading
  - Market Data
  properties:
  - type: Documentation
    url: https://bitnomial.com/exchange/docs/api/rest/overview/
  - type: Authentication
    url: authentication/bitnomial-authentication.yml
  - type: Conventions
    url: conventions/bitnomial-conventions.yml
  - type: ErrorCatalog
    url: errors/bitnomial-problem-types.yml
  - type: DataModel
    url: data-model/bitnomial-data-model.yml
- name: Bitnomial Market Data WebSocket API
  description: Real-time WebSocket market-data feed delivering trade, order book, block trade, and market status messages
    for subscribed products.
  humanURL: https://bitnomial.com/exchange/docs/api/websocket/subscribe/
  baseURL: https://bitnomial.com/exchange/api/v1/prod
  tags:
  - WebSocket
  - Market Data
  - Streaming
  properties:
  - type: AsyncAPI
    url: asyncapi/bitnomial-market-data-asyncapi.yml
  - type: Documentation
    url: https://bitnomial.com/exchange/docs/api/websocket/subscribe/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://bitnomial.com/
- type: DeveloperPortal
  url: https://bitnomial.com/exchange/docs
- type: Documentation
  url: https://bitnomial.com/exchange/docs/api/overview/
- type: APIReference
  url: https://bitnomial.com/exchange/docs/api/rest/overview/
- type: GettingStarted
  url: https://bitnomial.com/exchange/docs/api/rest/authentication/
- type: Blog
  url: https://bitnomial.com/blog
- type: Support
  url: mailto:help@exchange.bitnomial.com
- type: StatusPage
  url: https://bitnomial.statuspage.io
- type: GitHubOrganization
  url: https://github.com/bitnomial
- type: Authentication
  url: authentication/bitnomial-authentication.yml
- type: Conventions
  url: conventions/bitnomial-conventions.yml
- type: ErrorCatalog
  url: errors/bitnomial-problem-types.yml
- type: Lifecycle
  url: lifecycle/bitnomial-lifecycle.yml
- type: DataModel
  url: data-model/bitnomial-data-model.yml
- type: Sandbox
  url: sandbox/bitnomial-sandbox.yml
- type: Packages
  url: packages/bitnomial-packages.yml
- type: SDKs
  url: packages/bitnomial-packages.yml
- type: CLI
  url: cli/bitnomial-cli.yml
- type: LLMsTxt
  url: llms/bitnomial-llms.txt
- type: X-MCPServerCandidate
  url: mcp/bitnomial-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: AsyncAPI
  url: asyncapi/bitnomial-market-data-asyncapi.yml
- type: Conformance
  url: conformance/bitnomial-conformance.yml
- type: DomainSecurity
  url: security/bitnomial-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/bitnomial-vulnerability-disclosure.yml
- type: Security
  url: https://bitnomial.com/security
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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