Calastone

Calastone operates the world's largest global funds network, connecting asset managers, distributors, custodians and platforms to automate and digitalize the investment funds marketplace. Founded in 2007 and headquartered in London, it provides order routing, settlements, share-class conversions, dividends, transfers, reporting, money market services and tokenized fund distribution. More than 4,500 clients across 58 countries and territories use the network, processing over £300 billion of investment value each month. API and messaging connectivity is delivered through client onboarding rather than a public self-service developer portal. Calastone is a wholly owned subsidiary of SS&C Technologies Holdings, Inc. (Nasdaq: SSNC).

Calastone is profiled on the APIs.io network. Tagged areas include Company, Fintech, Funds, Asset Management, and Fund Administration.

Calastone’s developer surface includes engineering blog, support, and 6 more developer resources.

🌐 Visit website 📡 Source on GitHub

12.3/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyFintechFundsAsset ManagementFund AdministrationFinancial ServicesMoney MarketsSettlementsTokenization

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 12.3/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 1.3 / 20

Commercial Clarity 4.2 / 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/calastone: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

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 3

The organization behind the API

Website

Website

About

About

Blog

Blog

Source (apis.yml)

aid: calastone
name: Calastone
description: 'Calastone operates the world''s largest global funds network, connecting asset managers, distributors, custodians
  and platforms to automate and digitalize the investment funds marketplace. Founded in 2007 and headquartered in London,
  it provides order routing, settlements, share-class conversions, dividends, transfers, reporting, money market services
  and tokenized fund distribution. More than 4,500 clients across 58 countries and territories use the network, processing
  over £300 billion of investment value each month. API and messaging connectivity is delivered through client onboarding
  rather than a public self-service developer portal. Calastone is a wholly owned subsidiary of SS&C Technologies Holdings,
  Inc. (Nasdaq: SSNC).'
url: https://raw.githubusercontent.com/api-evangelist/calastone/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- accel
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Fintech
- Funds
- Asset Management
- Fund Administration
- Financial Services
- Money Markets
- Settlements
- Tokenization
image: https://www.calastone.com/wp-content/themes/calastone/assets/images/calastone-logo-black-new.png
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/calastone-domain-security.yml
- type: Website
  url: https://www.calastone.com
- type: About
  url: https://www.calastone.com/about-us/
- type: Blog
  url: https://www.calastone.com/insights/
- type: Support
  url: https://www.calastone.com/contact-us/
- type: TermsOfService
  url: https://www.calastone.com/terms-of-website-use/
- type: PrivacyPolicy
  url: https://www.ssctech.com/about/privacy
- type: LLMsTxt
  url: llms/calastone-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence