FalconX

FalconX is an institutional digital-asset prime brokerage that provides trading, credit and financing, custody, and market-access services to banks, asset managers, hedge funds, and other financial institutions. The platform offers spot, derivatives, options, and FX execution across 400+ tokens via an OTC desk, an execution-management system, and direct market access (DMA) with cross-margining and one-click borrowing, alongside margin loans, structured products, staking, and ETF liquidity provision. FalconX exposes a REST trading API (api.falconx.io) for price quotes, order execution, trade history, balances, transfers, and trade limits, documented publicly on a Stoplight developer portal and monitored via an Atlassian status page. FalconX entities are regulated as a CFTC-registered swap dealer and a Malta MFSA crypto-asset service provider.

FalconX is listed with 1 API on the APIs.io network. Tagged areas include Company, Cryptocurrency, Digital Assets, Prime Brokerage, and Trading.

FalconX’s developer surface includes documentation, API reference, signup flow, engineering blog, support, authentication, and 11 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

28.5/100 thin ▬ flat Agent 3/100 human only Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 API

Company Cryptocurrency Digital Assets Prime Brokerage Trading Institutional Financial Services Custody Derivatives OTC

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 28.5/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 7.7 / 17

Access Clarity 5.8 / 17

Operational Transparency 2.9 / 11

Contract Governance 1.9 / 10

Discoverability 5.6 / 9

Regulatory Posture 3.5 / 15

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 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 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

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/.

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

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
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
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

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 0.0 — up to +25.0 composite points
Access Clarity scores 34.2 — up to +13.2 composite points
Developer Ergonomics scores 45.2 — up to +11.0 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/falconx/apis.yml: open an issue on github.com/api-evangelist/falconx 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
EU/EEA Payment and E-Money Institutions (PSD2 passports)	regulated	22.7 (thin)	-	-
France Authorised Financial Firms (ACPR REGAFI + AMF white list)	regulated	22.7 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

APIs 1

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

FalconX API

FalconX REST trading API for institutional digital-asset execution: price quotes, order placement and execution, trade history, balances, transfers, and trade limits, across OTC...

Security Posture 2

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

Falconx Authentication

apiKey · 1 scheme

SECURITY

Falconx Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Conformance

Conformance

Access & Security 3

Authentication, authorization, and security posture

Security

Security

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

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

Source (apis.yml)

aid: falconx
name: FalconX
description: FalconX is an institutional digital-asset prime brokerage that provides trading, credit and financing, custody,
  and market-access services to banks, asset managers, hedge funds, and other financial institutions. The platform offers
  spot, derivatives, options, and FX execution across 400+ tokens via an OTC desk, an execution-management system, and direct
  market access (DMA) with cross-margining and one-click borrowing, alongside margin loans, structured products, staking,
  and ETF liquidity provision. FalconX exposes a REST trading API (api.falconx.io) for price quotes, order execution, trade
  history, balances, transfers, and trade limits, documented publicly on a Stoplight developer portal and monitored via an
  Atlassian status page. FalconX entities are regulated as a CFTC-registered swap dealer and a Malta MFSA crypto-asset service
  provider.
url: https://raw.githubusercontent.com/api-evangelist/falconx/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- accel
- lightspeed-venture-partners
- sapphire-ventures
x-tier: stub
x-tier-reason: portfolio-lead
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  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
  generated: '2026-09-03'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
image: https://cdn.prod.website-files.com/651c447abe93254c6451b1b3/6555443ed247940a60323128_FalconX_OpenGraph%20(1).png
x-docs-platform: stoplight
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-03
tags:
- Company
- Cryptocurrency
- Digital Assets
- Prime Brokerage
- Trading
- Institutional
- Financial Services
- Custody
- Derivatives
- OTC
tags_raw:
- Company
- Cryptocurrency
- Digital Assets
- Prime Brokerage
- Trading
- Institutional
- Financial Services
- Custody
- Derivatives
- OTC
- Financial-Services
apis:
- name: FalconX API
  description: 'FalconX REST trading API for institutional digital-asset execution: price quotes, order placement and execution,
    trade history, balances, transfers, and trade limits, across OTC, execution-management (Execute), and direct market access
    (DMA) products.'
  humanURL: https://falconx.stoplight.io
  baseURL: https://api.falconx.io
  tags:
  - Trading
  - Cryptocurrency
  - Execution
  - Digital Assets
  properties:
  - type: Documentation
    url: https://falconx.stoplight.io
  - type: APIReference
    url: https://falconx.stoplight.io
  - type: Authentication
    url: authentication/falconx-authentication.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.falconx.io
- type: DeveloperPortal
  url: https://falconx.stoplight.io
- type: Documentation
  url: https://falconx.stoplight.io
- type: APIReference
  url: https://falconx.stoplight.io
- type: SignUp
  url: https://app.falconx.io/login
- type: Login
  url: https://app.falconx.io/login
- type: Blog
  url: https://www.falconx.io/newsroom
- type: Support
  url: https://www.falconx.io/contact
- type: TermsOfService
  url: https://www.falconx.io/terms-of-use
- type: PrivacyPolicy
  url: https://www.falconx.io/privacy
- type: Security
  url: https://www.falconx.io/security-report
- type: StatusPage
  url: https://status.falconx.io
- type: Authentication
  url: authentication/falconx-authentication.yml
- type: Lifecycle
  url: lifecycle/falconx-lifecycle.yml
- type: Conformance
  url: conformance/falconx-conformance.yml
- type: DomainSecurity
  url: security/falconx-domain-security.yml
- type: LLMsTxt
  url: llms/falconx-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

FalconX API — frequently asked questions

Does FalconX have an API?

Yes. APIs.io lists 1 API from FalconX, including FalconX API.

How do I authenticate with the FalconX API?

FalconX uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Falconx Authentication.

Is the FalconX API ready for AI agents?

FalconX has a Kin Score of 28.5 out of 100 (thin) and an Agent Readiness score of 2.5 (human-only), scored by API Evangelist on 2026-10-31.

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