Neptune Networks

Neptune Networks operates Neptune, an institutional fixed-income pre-trade data platform that delivers real-time dealer axes and bond inventory directly into buy-side workflows. Aggregating structured data from 34 global banks, the network surfaces roughly 110k bonds per day at around $2.2T daily gross notional across 33 currencies, helping asset managers identify liquidity opportunities before they trade. Originally an independent, bank-owned utility backed by Anthemis, Neptune is now operated as RealQ, the data-solutions arm of Liquidnet Fixed Income (part of TP ICAP Group). Connectivity is institutional and permissioned - a browser web app, OMS/EMS integrations, FIX, a REST API, FTP/SSH drop copy, and AWS cloud data transfer - with no public developer portal, published OpenAPI, or open SDKs.

Neptune Networks is profiled on the APIs.io network. Tagged areas include Company, Fixed Income, Capital Markets, Fintech, and Market Data.

Neptune Networks’ developer surface includes support and 6 more developer resources.

🌐 Visit website 📡 Source on GitHub
16.8/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyFixed IncomeCapital MarketsFintechMarket DataPre-TradeBondsLiquidity

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 16.8/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 0.9 / 20
Commercial Clarity 6.8 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 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 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/neptune-networks: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 1

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

Neptune Networks Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login
Login

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

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
 Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: neptune-networks
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/neptune-networks.png
name: Neptune Networks
description: Neptune Networks operates Neptune, an institutional fixed-income pre-trade data platform that delivers real-time
  dealer axes and bond inventory directly into buy-side workflows. Aggregating structured data from 34 global banks, the network
  surfaces roughly 110k bonds per day at around $2.2T daily gross notional across 33 currencies, helping asset managers identify
  liquidity opportunities before they trade. Originally an independent, bank-owned utility backed by Anthemis, Neptune is
  now operated as RealQ, the data-solutions arm of Liquidnet Fixed Income (part of TP ICAP Group). Connectivity is institutional
  and permissioned - a browser web app, OMS/EMS integrations, FIX, a REST API, FTP/SSH drop copy, and AWS cloud data transfer
  - with no public developer portal, published OpenAPI, or open SDKs.
url: https://raw.githubusercontent.com/api-evangelist/neptune-networks/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- anthemis
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Fixed Income
- Capital Markets
- Fintech
- Market Data
- Pre-Trade
- Bonds
- Liquidity
apis: []
common:
- type: DomainSecurity
  url: security/neptune-networks-domain-security.yml
- type: Website
  url: https://realqmarkets.com/neptune
- type: Website
  url: https://neptunefi.com
- type: Login
  url: https://realqmarkets.com/member-login
- type: Support
  url: https://realqmarkets.com/contact
- type: TermsOfService
  url: https://tpicap.com/tpicap/website-terms-of-use
- type: PrivacyPolicy
  url: https://tpicap.com/tpicap/privacy-notice
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 4
  pass: local-v1