Sirion

Sirion (SirionLabs) is an AI-native enterprise Contract Lifecycle Management (CLM) platform. SirionOne manages the full agreement lifecycle - authoring, negotiation, e-signature, a searchable contract repository, metadata and clause extraction, obligation and performance management, and supplier / counterparty governance. The platform exposes REST "Business API & Integrations" capabilities plus pre-built connectors (Salesforce, SAP Ariba, SAP S/4HANA, DocuSign, iPaaS) and configurable webhooks, secured with OAuth 2.0 client credentials. API access is enterprise / contract-gated - credentials are provisioned per tenant and the API reference is available to authenticated Sirion users. Endpoint paths and schemas in this entry are MODELED from public product references, not copied from a public reference document.

Sirion publishes 6 APIs on the APIs.io network, including Contract Requests API, Contracts API, Metadata & Clauses API, and 3 more. Tagged areas include Contract Management, Contract Lifecycle Management, CLM, Contracts, and AI.

Sirion’s developer surface includes authentication, documentation, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub
37.3/100 thin ▬ flat Agent 48/100 agent ready Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessEnterpriseSelf serve
6 APIs
Contract ManagementContract Lifecycle ManagementCLMContractsAIEnterpriseLegalAgreementsSupplier ManagementObligations

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 37.3/100 · thin
Contract Quality 13.5 / 25
Developer Ergonomics 3.9 / 20
Commercial Clarity 5.8 / 20
Operational Transparency 4.1 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 48/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
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 7 / 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/sirion: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 6

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

Sirion Contract Requests API

Contract Requests (CDRs) that drive intake and authoring (MODELED).

Sirion Contracts API

Executed contracts / agreements in the SirionOne repository (MODELED).

Sirion Metadata & Clauses API

Contract metadata fields and AI-extracted clauses (MODELED).

Sirion Obligations API

Contractual obligations and performance tracking (MODELED).

Sirion Suppliers API

Suppliers and counterparties linked to contracts (MODELED).

Sirion Webhooks API

Outbound webhook subscriptions for event notifications (MODELED).

Open Collections 1

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

Sirion CLM API (Modeled)

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Sirion Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Sirion Rate Limits

3 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Sirion Finops

FINOPS

Security Posture 2

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

Sirion Authentication

oauth2 · 1 scheme

SECURITY

Sirion Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Sirion Agentic Access

15 operations · 7 acting

15 operations · 7 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 2

The organization behind the API

Website
Website
 LinkedIn
LinkedIn

Source (apis.yml)

apis.yml Raw ↑ 
aid: sirion
url: https://raw.githubusercontent.com/api-evangelist/sirion/refs/heads/main/apis.yml
name: Sirion
kind: company
description: Sirion (SirionLabs) is an AI-native enterprise Contract Lifecycle Management (CLM) platform. SirionOne manages
  the full agreement lifecycle - authoring, negotiation, e-signature, a searchable contract repository, metadata and clause
  extraction, obligation and performance management, and supplier / counterparty governance. The platform exposes REST "Business
  API & Integrations" capabilities plus pre-built connectors (Salesforce, SAP Ariba, SAP S/4HANA, DocuSign, iPaaS) and configurable
  webhooks, secured with OAuth 2.0 client credentials. API access is enterprise / contract-gated - credentials are provisioned
  per tenant and the API reference is available to authenticated Sirion users. Endpoint paths and schemas in this entry are
  MODELED from public product references, not copied from a public reference document.
accessModel:
  pricing: enterprise
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Enterprise · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/sirion.png
tags:
- Contract Management
- Contract Lifecycle Management
- CLM
- Contracts
- AI
- Enterprise
- Legal
- Agreements
- Supplier Management
- Obligations
created: '2026-07-12'
modified: '2026-07-12'
specificationVersion: '0.19'
apis:
- aid: sirion:sirion-contract-requests-api
  name: Sirion Contract Requests API
  description: Contract Requests (CDRs) that drive intake and authoring (MODELED).
  humanURL: https://www.sirion.ai/integrations/
  baseURL: https://{tenant}.sirioncloud.com
  tags:
  - Contract Requests
  properties:
  - type: OpenAPI
    url: openapi/sirion-contract-requests-api-openapi.yml
  - type: Documentation
    url: https://www.sirion.ai/integrations/
  - type: APIReference
    url: https://docs.sirion.ai
  - type: PostmanCollection
    url: collections/sirion.postman_collection.json
  - type: OpenCollection
    url: collections/sirion.opencollection.json
- aid: sirion:sirion-contracts-api
  name: Sirion Contracts API
  description: Executed contracts / agreements in the SirionOne repository (MODELED).
  humanURL: https://www.sirion.ai/integrations/
  baseURL: https://{tenant}.sirioncloud.com
  tags:
  - Contracts
  properties:
  - type: OpenAPI
    url: openapi/sirion-contracts-api-openapi.yml
  - type: Documentation
    url: https://www.sirion.ai/integrations/
  - type: APIReference
    url: https://docs.sirion.ai
  - type: PostmanCollection
    url: collections/sirion.postman_collection.json
  - type: OpenCollection
    url: collections/sirion.opencollection.json
- aid: sirion:sirion-metadata-clauses-api
  name: Sirion Metadata & Clauses API
  description: Contract metadata fields and AI-extracted clauses (MODELED).
  humanURL: https://www.sirion.ai/integrations/
  baseURL: https://{tenant}.sirioncloud.com
  tags:
  - Metadata & Clauses
  properties:
  - type: OpenAPI
    url: openapi/sirion-metadata-clauses-api-openapi.yml
  - type: Documentation
    url: https://www.sirion.ai/integrations/
  - type: APIReference
    url: https://docs.sirion.ai
  - type: PostmanCollection
    url: collections/sirion.postman_collection.json
  - type: OpenCollection
    url: collections/sirion.opencollection.json
- aid: sirion:sirion-obligations-api
  name: Sirion Obligations API
  description: Contractual obligations and performance tracking (MODELED).
  humanURL: https://www.sirion.ai/integrations/
  baseURL: https://{tenant}.sirioncloud.com
  tags:
  - Obligations
  properties:
  - type: OpenAPI
    url: openapi/sirion-obligations-api-openapi.yml
  - type: Documentation
    url: https://www.sirion.ai/integrations/
  - type: APIReference
    url: https://docs.sirion.ai
  - type: PostmanCollection
    url: collections/sirion.postman_collection.json
  - type: OpenCollection
    url: collections/sirion.opencollection.json
- aid: sirion:sirion-suppliers-api
  name: Sirion Suppliers API
  description: Suppliers and counterparties linked to contracts (MODELED).
  humanURL: https://www.sirion.ai/integrations/
  baseURL: https://{tenant}.sirioncloud.com
  tags:
  - Suppliers
  properties:
  - type: OpenAPI
    url: openapi/sirion-suppliers-api-openapi.yml
  - type: Documentation
    url: https://www.sirion.ai/integrations/
  - type: APIReference
    url: https://docs.sirion.ai
  - type: PostmanCollection
    url: collections/sirion.postman_collection.json
  - type: OpenCollection
    url: collections/sirion.opencollection.json
- aid: sirion:sirion-webhooks-api
  name: Sirion Webhooks API
  description: Outbound webhook subscriptions for event notifications (MODELED).
  humanURL: https://www.sirion.ai/integrations/
  baseURL: https://{tenant}.sirioncloud.com
  tags:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/sirion-webhooks-api-openapi.yml
  - type: Documentation
    url: https://www.sirion.ai/integrations/
  - type: APIReference
    url: https://docs.sirion.ai
  - type: PostmanCollection
    url: collections/sirion.postman_collection.json
  - type: OpenCollection
    url: collections/sirion.opencollection.json
common:
- type: AgenticAccess
  url: agentic-access/sirion-agentic-access.yml
- type: Authentication
  url: authentication/sirion-authentication.yml
- type: Website
  url: https://www.sirion.ai
- type: Documentation
  url: https://docs.sirion.ai
- type: Plans
  url: plans/sirion-plans-pricing.yml
- type: RateLimits
  url: rate-limits/sirion-rate-limits.yml
- type: FinOps
  url: finops/sirion-finops.yml
- type: DomainSecurity
  url: security/sirion-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/sirionlabs
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com