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 Artificial Intelligence.

Sirion’s developer surface includes authentication, documentation, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

35.8/100 thin ▬ flat Agent 23/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessEnterpriseSelf serve

1 APIs

Contract Management Contract Lifecycle Management CLM Contracts Artificial Intelligence Enterprise Legal Agreements Supplier Management Obligations

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 35.8/100 · thin

Contract Quality 11.2 / 23

Developer Ergonomics 4.1 / 18

Access Clarity 5.2 / 18

Operational Transparency 3.7 / 12

Contract Governance 0.0 / 11

Discoverability 6.2 / 9

Create-or-Update Ergonomics 2.8 / 10

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

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

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

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.

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 github.com/api-evangelist/sirion: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

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 8

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

API Collection

OPEN COLLECTION

Sirion CLM API (Modeled) Contract Requests API

OPEN COLLECTION

Sirion CLM API (Modeled) Contract Requests Contracts API

OPEN COLLECTION

Sirion CLM API (Modeled) Contract Requests Metadata & Clauses API

OPEN COLLECTION

Sirion CLM API (Modeled) Contract Requests Obligations API

OPEN COLLECTION

Sirion CLM API (Modeled) Contract Requests Suppliers API

OPEN COLLECTION

Sirion CLM API (Modeled) Contract Requests Webhooks API

OPEN COLLECTION

Sirion CLM API (Modeled)

OPEN COLLECTION

Scroll for all 8

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

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

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

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.
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: 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
- Artificial Intelligence
- Enterprise
- Legal
- Agreements
- Supplier Management
- Obligations
tags_raw:
- Contract Management
- Contract Lifecycle Management
- CLM
- Contracts
- AI
- Enterprise
- Legal
- Agreements
- Supplier Management
- Obligations
created: '2026-07-12'
modified: '2026-07-12'
specificationVersion: '0.23'
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:
  - Webhook
  tags_raw:
  - 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: CapabilityMap
  url: capabilities/sirion-capability-edges.yml
  name: Sirion Business Capability Map
- 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

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