Sigma360

Sigma360 (formerly Sigma Ratings) is a financial-crime-compliance platform for sanctions and watchlist screening, AML investigations, adverse-media screening, enhanced due diligence, perpetual KYC, third-party risk management, country risk ratings, and counterparty credit-risk monitoring. Its REST API (OpenAPI 3.1, v2.0.1) lets you screen entities against risk data, enroll them for continuous monitoring, retrieve risk profiles and change history, and subscribe to webhook events — authenticated with an API key over https://api.sigma360.com/external/v2.

Sigma360 publishes 8 API contracts indexed on the APIs.io network, including Account API, Informational API, Monitoring: Entity Creation API, and 5 more. Tagged areas include Company, Compliance, Financial Crime, KYC, and AML.

The Sigma360 catalog on APIs.io includes 2 event-driven AsyncAPI specifications and 1 Spectral governance ruleset.

Sigma360’s developer surface includes documentation, API reference, getting-started guide, changelog, signup flow, support, authentication, and 22 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

49.3/100 developing ▬ flat Agent 23/100 agent aware Front door AI 4/6 moderate saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 3 Agent Skills

Company Compliance Financial Crime KYC AML Sanctions Screening Risk Intelligence RegTech Adverse Media

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Compliance Management

BC-130

Monitoring: Entity CreationMonitoring: Entity ManagementOne-Off Screening

POST /screening/full-single POST /entities/create POST /entities/create/assume-clean POST /alerts

Kin Score

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

Composite quality — 49.3/100 · developing

Contract Quality 12.2 / 19

Developer Ergonomics 8.5 / 15

Access Clarity 3.6 / 15

Operational Transparency 4.9 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 4.0 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 23/100 · 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 5 / 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 Horizontal (data, software, accessibility, platform) 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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
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
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link

8 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 23.7 — up to +15.3 composite points
Contract Governance scores 18.2 — up to +9.8 composite points
Developer Ergonomics scores 56.5 — up to +8.7 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/sigma-ratings/apis.yml: open an issue on github.com/api-evangelist/sigma-ratings 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 →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 8

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

Sigma360 Account API

Account management

Sigma360 Informational API

Informational endpoints

Sigma360 Monitoring: Entity Creation API

Creating new 'My Entities'

Sigma360 Monitoring: Entity Management API

Browsing and retrieving monitored entities

Sigma360 Monitoring: History API

Retrieving monitoring history

Sigma360 One-Off Screening API

Screening against Sigma360's risk data

Sigma360 Utilities API

General utilities

Sigma360 Webhooks API

Webhooks that notify you of important events

Scroll for all 8

Open Collections 7

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Sigma360 Account API

OPEN COLLECTION

Sigma360 Account Informational API

OPEN COLLECTION

Sigma360 Account Monitoring: Entity Creation API

OPEN COLLECTION

Sigma360 Account Monitoring: Entity Management API

OPEN COLLECTION

Sigma360 Account Monitoring: History API

OPEN COLLECTION

Sigma360 Account One-Off Screening API

OPEN COLLECTION

Sigma360 Account Utilities API

OPEN COLLECTION

Scroll for all 7

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

Handle alerts and webhooks

AGENT SKILL

Create and monitor an entity

AGENT SKILL

Screen an entity against Sigma360 risk data

AGENT SKILL

Event Specifications 2

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

Sigma360 Webhooks

Event surface for Sigma360; webhook callbacks are delivered to your registered HTTPS endpoint when monitored entities change. Derived from the OpenAPI 3.1 webhooks object publis...

ASYNCAPI

Sigma Ratings Webhooks

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Sigma360 API Rules

65 rules · 55 errors 9 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Sigma Ratings Openapi Overlay

2 actions · update · sigma-ratings-openapi-original.json

DERIVED

Security Posture 4

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

Sigma Ratings Authentication

apiKey · 1 scheme

SECURITY

Sigma Ratings Domain Security

TLSv1.3 · DMARC

SECURITY

Sigma Ratings Vulnerability Disclosure

Hackerone · contact published

SECURITY

Sigma Ratings Trust Center

SOC 2 Type II, GDPR

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

AsyncAPI

AsyncAPI

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

X-MCPServerCandidate

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

DataModel

Lifecycle

Conformance

Webhooks

Access & Security 6

Authentication, authorization, and security posture

Security

TrustCenter

Compliance

Authentication

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

StatusPage

StatusPage

Support

Support

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

aid: sigma-ratings
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - 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: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/sigma-ratings.png
name: Sigma360
description: Sigma360 (formerly Sigma Ratings) is a financial-crime-compliance platform for sanctions and watchlist screening,
  AML investigations, adverse-media screening, enhanced due diligence, perpetual KYC, third-party risk management, country
  risk ratings, and counterparty credit-risk monitoring. Its REST API (OpenAPI 3.1, v2.0.1) lets you screen entities against
  risk data, enroll them for continuous monitoring, retrieve risk profiles and change history, and subscribe to webhook events
  — authenticated with an API key over https://api.sigma360.com/external/v2.
url: https://raw.githubusercontent.com/api-evangelist/sigma-ratings/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- techstars
x-tier: enriched
x-tier-reason: api-harvested
x-former-name: Sigma Ratings
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
x-docs-platform: docusaurus
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-04
x-docs-hosting: github-pages
tags:
- Company
- Compliance
- Financial Crime
- KYC
- AML
- Sanctions Screening
- Risk Intelligence
- RegTech
- Adverse Media
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: sigma-ratings:sigma-ratings-account-api
  name: Sigma360 Account API
  description: Account management
  humanURL: https://docs.sigma360.com/api
  baseURL: https://api.sigma360.com/external/v2
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/sigma-ratings-account-api-openapi.yml
  - type: APIReference
    url: https://docs.sigma360.com/api
  - type: Documentation
    url: https://docs.sigma360.com/
- aid: sigma-ratings:sigma-ratings-informational-api
  name: Sigma360 Informational API
  description: Informational endpoints
  humanURL: https://docs.sigma360.com/api
  baseURL: https://api.sigma360.com/external/v2
  tags:
  - Informational
  properties:
  - type: OpenAPI
    url: openapi/sigma-ratings-informational-api-openapi.yml
  - type: APIReference
    url: https://docs.sigma360.com/api
  - type: Documentation
    url: https://docs.sigma360.com/
- aid: sigma-ratings:sigma-ratings-monitoring-entity-creation-api
  name: 'Sigma360 Monitoring: Entity Creation API'
  description: Creating new 'My Entities'
  humanURL: https://docs.sigma360.com/api
  baseURL: https://api.sigma360.com/external/v2
  tags:
  - 'Monitoring: Entity Creation'
  properties:
  - type: OpenAPI
    url: openapi/sigma-ratings-monitoring-entity-creation-api-openapi.yml
  - type: APIReference
    url: https://docs.sigma360.com/api
  - type: Documentation
    url: https://docs.sigma360.com/
- aid: sigma-ratings:sigma-ratings-monitoring-entity-management-api
  name: 'Sigma360 Monitoring: Entity Management API'
  description: Browsing and retrieving monitored entities
  humanURL: https://docs.sigma360.com/api
  baseURL: https://api.sigma360.com/external/v2
  tags:
  - 'Monitoring: Entity Management'
  properties:
  - type: OpenAPI
    url: openapi/sigma-ratings-monitoring-entity-management-api-openapi.yml
  - type: APIReference
    url: https://docs.sigma360.com/api
  - type: Documentation
    url: https://docs.sigma360.com/
- aid: sigma-ratings:sigma-ratings-monitoring-history-api
  name: 'Sigma360 Monitoring: History API'
  description: Retrieving monitoring history
  humanURL: https://docs.sigma360.com/api
  baseURL: https://api.sigma360.com/external/v2
  tags:
  - 'Monitoring: History'
  properties:
  - type: OpenAPI
    url: openapi/sigma-ratings-monitoring-history-api-openapi.yml
  - type: APIReference
    url: https://docs.sigma360.com/api
  - type: Documentation
    url: https://docs.sigma360.com/
- aid: sigma-ratings:sigma-ratings-one-off-screening-api
  name: Sigma360 One-Off Screening API
  description: Screening against Sigma360's risk data
  humanURL: https://docs.sigma360.com/api
  baseURL: https://api.sigma360.com/external/v2
  tags:
  - One-Off Screening
  properties:
  - type: OpenAPI
    url: openapi/sigma-ratings-one-off-screening-api-openapi.yml
  - type: APIReference
    url: https://docs.sigma360.com/api
  - type: Documentation
    url: https://docs.sigma360.com/
- aid: sigma-ratings:sigma-ratings-utilities-api
  name: Sigma360 Utilities API
  description: General utilities
  humanURL: https://docs.sigma360.com/api
  baseURL: https://api.sigma360.com/external/v2
  tags:
  - Utilities
  properties:
  - type: OpenAPI
    url: openapi/sigma-ratings-utilities-api-openapi.yml
  - type: APIReference
    url: https://docs.sigma360.com/api
  - type: Documentation
    url: https://docs.sigma360.com/
- aid: sigma-ratings:sigma-ratings-webhooks-api
  name: Sigma360 Webhooks API
  description: Webhooks that notify you of important events
  humanURL: https://docs.sigma360.com/api
  baseURL: https://api.sigma360.com/external/v2
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/sigma-ratings-webhooks-api-openapi.yml
common:
- type: CapabilityMap
  url: capabilities/sigma-ratings-capability-edges.yml
  name: Sigma360 Business Capability Map
- type: Website
  url: https://www.sigma360.com/
- type: DeveloperPortal
  url: https://docs.sigma360.com/
- type: Documentation
  url: https://docs.sigma360.com/
- type: APIReference
  url: https://docs.sigma360.com/api
- type: GettingStarted
  url: https://docs.sigma360.com/docs/user-guide/intro
- type: ChangeLog
  url: https://docs.sigma360.com/docs/release-notes
- type: StatusPage
  url: https://sigma360status.com/
- type: SignUp
  url: https://www.sigma360.com/free-trial/
- type: Login
  url: https://app.sigma360.com/
- type: Support
  url: mailto:support@sigma360.com
- type: PrivacyPolicy
  url: https://www.sigma360.com/privacy-policy/
- type: Security
  url: https://www.sigma360.com/security-and-disclosure-policy/
- type: TrustCenter
  url: https://trust.sigma360.com/
- type: Compliance
  url: https://trust.sigma360.com/
- type: Authentication
  url: authentication/sigma-ratings-authentication.yml
- type: Conventions
  url: conventions/sigma-ratings-conventions.yml
- type: ErrorCatalog
  url: errors/sigma-ratings-problem-types.yml
- type: DataModel
  url: data-model/sigma-ratings-data-model.yml
- type: Lifecycle
  url: lifecycle/sigma-ratings-lifecycle.yml
- type: Conformance
  url: conformance/sigma-ratings-conformance.yml
- type: Overlay
  url: overlays/sigma-ratings-openapi-overlay.yaml
- type: AsyncAPI
  url: asyncapi/sigma-ratings-webhooks-asyncapi.yml
- type: Webhooks
  url: asyncapi/sigma-ratings-webhooks.yml
- type: X-MCPServerCandidate
  url: mcp/sigma-ratings-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: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/sigma-ratings-llms.txt
- type: VulnerabilityDisclosure
  url: security/sigma-ratings-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/sigma-ratings-domain-security.yml
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 18
  pass: local-v1

Sigma360 API — frequently asked questions

Does Sigma360 have an API?

Yes. APIs.io lists 8 APIs from Sigma360, including Sigma360 Account API, Sigma360 Informational API and Sigma360 Monitoring: Entity Creation API, and 5 more.

Is there an OpenAPI specification for the Sigma360 API?

Yes. APIs.io indexes 8 OpenAPI specifications for Sigma360, each linked for download from this page.

How do I authenticate with the Sigma360 API?

Sigma360 uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Sigma Ratings Authentication.

Is the Sigma360 API ready for AI agents?

Sigma360 has a Kin Score of 49.3 out of 100 (developing) and an Agent Readiness score of 23.1 (agent-aware), scored by API Evangelist on 2026-11-06.

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