Siren

Siren (Siren Solutions, siren.io) builds the Siren Platform for investigative intelligence: Siren Investigate, an Elasticsearch/OpenSearch-based investigation, link-analysis and search application used by law enforcement, intelligence, cyber and financial-crime teams. Siren Investigate exposes documented REST APIs (Status, Health, Query Generator, Dashboard, Search, Object Definitions, Reconciliation, Refresh Fields) plus a JavaScript scripting API, served from each customer's own self-hosted Siren Investigate instance.

Siren is listed with 6 APIs on the APIs.io network, including Collections API, Entity Tables API, Generate Query API, and 3 more. Tagged areas include Company, Investigative Intelligence, Search, Link Analysis, and Elasticsearch.

The Siren catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Siren’s developer surface includes documentation, API reference, getting-started guide, engineering blog, support, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

20.4/100 emerging ▼ -5.4 Agent 18/100 agent aware Heartbeat 100/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

6 APIs

CompanyInvestigative IntelligenceSearchLink AnalysisElasticsearch Data Analytics

Kin Score

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

Composite quality — 20.4/100 · emerging

Contract Quality 4.4 / 19

Developer Ergonomics 2.7 / 15

Access Clarity 0.8 / 15

Operational Transparency 0.3 / 10

Contract Governance 2.0 / 9

Discoverability 6.0 / 8

Regulatory Posture 1.9 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 18/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 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 0 / 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
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0

11 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 23.7 — up to +19.1 composite points
Access Clarity scores 5.3 — up to +18.9 composite points
Developer Ergonomics scores 17.9 — up to +16.4 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/siren-io/apis.yml: open an issue on github.com/api-evangelist/siren-io 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 6

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

Siren Collections API

The Collections API from Siren — 1 operation(s) for collections.

Siren Entity Tables API

The Entity Tables API from Siren — 1 operation(s) for entity tables.

Siren Generate Query API

The Generate Query API from Siren — 2 operation(s) for generate query.

Siren Health API

The Health API from Siren — 1 operation(s) for health.

Siren Operations API

The Operations API from Siren — 3 operation(s) for operations.

Siren Status API

The Status API from Siren — 1 operation(s) for status.

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Siren Io Context

7 classes · 18 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Siren API Rules

10 rules · 8 errors 1 warnings 1 info

SPECTRAL

JSON Schema 4

Standalone JSON Schema definitions for this provider's data models.

PostApiCollectionsReconciliationRequest

1 properties

JSON SCHEMA

PostApiCollectionsReconciliationResponse

1 properties

JSON SCHEMA

PostApiEntityTablesRefreshFieldsRequest

1 properties

JSON SCHEMA

PostApiEntityTablesRefreshFieldsResponse

1 properties

JSON SCHEMA

Security Posture 1

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

Siren Io Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

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 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

Contact

Contact

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

Newsroom

Newsroom

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: siren-io
name: Siren
description: 'Siren (Siren Solutions, siren.io) builds the Siren Platform for investigative intelligence: Siren Investigate,
  an Elasticsearch/OpenSearch-based investigation, link-analysis and search application used by law enforcement, intelligence,
  cyber and financial-crime teams. Siren Investigate exposes documented REST APIs (Status, Health, Query Generator, Dashboard,
  Search, Object Definitions, Reconciliation, Refresh Fields) plus a JavaScript scripting API, served from each customer''s
  own self-hosted Siren Investigate instance.'
url: https://raw.githubusercontent.com/api-evangelist/siren-io/refs/heads/main/apis.yml
x-type: company
x-source: harvest:market-gap:search-api
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-14 (local-v5; was harvest)
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  probe_state: none
  source:
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.20'
created: '2026-10-13'
modified: '2026-10-14'
tags:
- Company
- Investigative Intelligence
- Search
- Link Analysis
- Elasticsearch
- Data Analytics
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
image: https://siren.io/wp-content/uploads/img-siren-logo-power-investigations-hq-2400x1260-1.jpg
common:
- type: Spectral
  url: rules/siren-io-rules.yml
- type: JSONLD
  url: json-ld/siren-io-context.jsonld
- type: Vocabulary
  url: vocabulary/siren-io-vocabulary.yml
- type: DataModel
  url: data-model/siren-io-data-model.yml
- type: Conformance
  url: conformance/siren-io-conformance.yml
- type: LLMsTxt
  url: llms/siren-io-llms.txt
- type: Hosts
  url: hosts/siren-io-hosts.yml
- type: Newsroom
  url: https://siren.io/newsroom/
- type: DomainSecurity
  url: security/siren-io-domain-security.yml
- type: Website
  url: https://siren.io
- type: Documentation
  url: https://docs.siren.io
- type: APIReference
  url: https://docs.siren.io/siren-platform-user-guide/16.0/siren-investigate/c_rest-apis.html
- type: GettingStarted
  url: https://siren.io/getting-started/
- type: Blog
  url: https://siren.io/blog/
- type: GitHubOrganization
  url: https://github.com/sirensolutions
- type: Support
  url: https://support.siren.io
- type: PrivacyPolicy
  url: https://siren.io/legal/privacy-policy/
- type: Contact
  url: https://siren.io/contact/
apis:
- aid: siren-io:siren-io-collections-api
  name: Siren Collections API
  description: The Collections API from Siren — 1 operation(s) for collections.
  humanURL: https://docs.siren.io/siren-platform-user-guide/16.0/siren-investigate/c_rest-apis.html
  baseURL: https://{siren-investigate-host}
  tags:
  - Collection
  tags_raw:
  - Collections
  properties:
  - type: OpenAPI
    url: openapi/siren-io-collections-api-openapi.yml
  - type: JSONSchema
    url: json-schema/siren-io-post-api-entity-tables-refresh-fields-request-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-collections-reconciliation-request-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-collections-reconciliation-response-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-entity-tables-refresh-fields-response-schema.json
  - type: Documentation
    url: https://docs.siren.io/siren-platform-user-guide/16.0/siren-investigate/c_rest-apis.html
- aid: siren-io:siren-io-entity-tables-api
  name: Siren Entity Tables API
  description: The Entity Tables API from Siren — 1 operation(s) for entity tables.
  humanURL: https://docs.siren.io/siren-platform-user-guide/16.0/siren-investigate/c_rest-apis.html
  baseURL: https://{siren-investigate-host}
  tags:
  - Entity Tables
  properties:
  - type: OpenAPI
    url: openapi/siren-io-entity-tables-api-openapi.yml
  - type: JSONSchema
    url: json-schema/siren-io-post-api-entity-tables-refresh-fields-request-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-collections-reconciliation-request-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-collections-reconciliation-response-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-entity-tables-refresh-fields-response-schema.json
  - type: Documentation
    url: https://docs.siren.io/siren-platform-user-guide/16.0/siren-investigate/c_rest-apis.html
- aid: siren-io:siren-io-generate-query-api
  name: Siren Generate Query API
  description: The Generate Query API from Siren — 2 operation(s) for generate query.
  humanURL: https://docs.siren.io/siren-platform-user-guide/16.0/siren-investigate/c_rest-apis.html
  baseURL: https://{siren-investigate-host}
  tags:
  - Generate Query
  properties:
  - type: OpenAPI
    url: openapi/siren-io-generate-query-api-openapi.yml
  - type: JSONSchema
    url: json-schema/siren-io-post-api-entity-tables-refresh-fields-request-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-collections-reconciliation-request-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-collections-reconciliation-response-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-entity-tables-refresh-fields-response-schema.json
  - type: Documentation
    url: https://docs.siren.io/siren-platform-user-guide/16.0/siren-investigate/c_rest-apis.html
- aid: siren-io:siren-io-health-api
  name: Siren Health API
  description: The Health API from Siren — 1 operation(s) for health.
  humanURL: https://docs.siren.io/siren-platform-user-guide/16.0/siren-investigate/c_rest-apis.html
  baseURL: https://{siren-investigate-host}
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/siren-io-health-api-openapi.yml
  - type: JSONSchema
    url: json-schema/siren-io-post-api-entity-tables-refresh-fields-request-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-collections-reconciliation-request-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-collections-reconciliation-response-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-entity-tables-refresh-fields-response-schema.json
  - type: Documentation
    url: https://docs.siren.io/siren-platform-user-guide/16.0/siren-investigate/c_rest-apis.html
- aid: siren-io:siren-io-operations-api
  name: Siren Operations API
  description: The Operations API from Siren — 3 operation(s) for operations.
  humanURL: https://docs.siren.io/siren-platform-user-guide/16.0/siren-investigate/c_rest-apis.html
  baseURL: https://{siren-investigate-host}
  tags: []
  tags_raw:
  - Operations
  properties:
  - type: OpenAPI
    url: openapi/siren-io-operations-api-openapi.yml
  - type: JSONSchema
    url: json-schema/siren-io-post-api-entity-tables-refresh-fields-request-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-collections-reconciliation-request-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-collections-reconciliation-response-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-entity-tables-refresh-fields-response-schema.json
  - type: Documentation
    url: https://docs.siren.io/siren-platform-user-guide/16.0/siren-investigate/c_rest-apis.html
- aid: siren-io:siren-io-status-api
  name: Siren Status API
  description: The Status API from Siren — 1 operation(s) for status.
  humanURL: https://docs.siren.io/siren-platform-user-guide/16.0/siren-investigate/c_rest-apis.html
  baseURL: https://{siren-investigate-host}
  tags:
  - Status
  properties:
  - type: OpenAPI
    url: openapi/siren-io-status-api-openapi.yml
  - type: JSONSchema
    url: json-schema/siren-io-post-api-entity-tables-refresh-fields-request-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-collections-reconciliation-request-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-collections-reconciliation-response-schema.json
  - type: JSONSchema
    url: json-schema/siren-io-post-api-entity-tables-refresh-fields-response-schema.json
  - type: Documentation
    url: https://docs.siren.io/siren-platform-user-guide/16.0/siren-investigate/c_rest-apis.html
x-coverage:
  state: none
  reason: no-developer-program
  method: derived
  generated: '2026-10-14'
  generator: derive-coverage.py (pre-flight evidence)
  detail: the company publishes no developer documentation host and no machine-readable contract on its own domain
  evidence:
  - url: https://info.siren.io/mcp
    status: 403
  - url: https://siren.io
    status: 200
x-enrichment:
  date: '2026-10-14'
  status: enriched
  artifacts_added: 9
  pass: local-v5

Siren API — frequently asked questions

Does Siren have an API?

Yes. APIs.io lists 6 APIs from Siren, including Siren Collections API, Siren Entity Tables API and Siren Generate Query API, and 3 more.

Is there an OpenAPI specification for the Siren API?

Yes. APIs.io indexes 6 OpenAPI specifications for Siren, each linked for download from this page.

Is the Siren API ready for AI agents?

Siren has a Kin Score of 20.4 out of 100 (emerging) and an Agent Readiness score of 18.3 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

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find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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