Xpansiv

Xpansiv is market infrastructure for global environmental and energy commodities — carbon credits, renewable energy certificates, water, low-carbon fuels and recycled materials. It operates CBL, the largest spot exchange for environmental commodities, the Evolution Markets and OTX brokerage and execution desks, the H2OX water market and the ACE and JSEV carbon platforms, alongside the environmental registries it acquired with APX in 2022 — NAR (North American Renewables Registry), TIGR, I-REC, I-TRACK-G and the Xpansiv-powered digital fuels registries. Its public developer portal at developer.xpansiv.com publishes eleven OpenAPI descriptions across Xpansiv Connect (environmental commodity portfolio, retirement and transfer), Xpansiv Managed Solutions, the NAR and TIGR registry client APIs, the Optimal Outcomes suite and the APX Power Markets file registry, plus a FIX 4.4 marketplace protocol specification, Xpansiv Data market-data APIs and a first-party Python SDK.

Xpansiv publishes 6 APIs on the APIs.io network, including Connect API, Managed Solutions API, NAR Registry Client API, and 3 more. Tagged areas include Company, Environmental Commodities, Carbon Markets, Renewable Energy Certificates, and Registries.

Xpansiv’s developer surface includes documentation, API reference, getting-started guide, support, signup flow, engineering blog, authentication, and 23 more developer resources.

51.8/100 developing Agent 50/100 agent ready Full breakdown ↓
scored 2026-09-04 · rubric v0.18.3
11 APIs 1 MCP Servers
CompanyEnvironmental CommoditiesCarbon MarketsRenewable Energy CertificatesRegistriesMarket DataTradingEnergySustainabilityClimate

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-04 · rubric v0.18.3
Regulatory Posture applies to this provider. Its tags matched the Energy & Utilities 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.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
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/xpansiv: 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 8

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

Xpansiv Connect API

Xpansiv Connect exposes environmental commodity account, portfolio, exchange, forward deal, issuance, project, reference data, report, retirement, split lot and transfer operati...

Xpansiv Managed Solutions API

Access facilities, transactions, meter readings, clean transportation, market, qualified reporting entity, building type, remote data collector and utility data from an Xpansiv ...

Xpansiv Data API

Real-time, end-of-day and historical transaction-based market data for environmental and energy commodities, sourced from CBL and global intermediaries including Evolution Marke...

NAR Registry Client API

The North American Renewables Registry client API for retrieving and transacting NAR monthly vintage renewable energy certificates — account, ledger, subaccount and system opera...

TIGRS Registry Client API

The Tradable Instrument for Global Renewables (TIGR) registry client API for retrieving and retiring TIGR certificates — corporate entity, ledger, subaccount and system operatio...

Xpansiv Optimal Outcomes APIs

The Optimal Outcomes suite — a system health API, a file registry, a meter-data telemetry API, a reporting service, a resource API and a transfer position external API for viewi...

APX Power Markets File Registry API

The APX MarketSuite file registry and reporting API used to submit and retrieve ISO scheduling files for CAISO, ERCOT, PJM, SPP, MISO, ISONE and NYISO, alongside the XML/XSD sch...

Xpansiv Marketplace FIX API

The Xpansiv Marketplace Server API for retrieving real-time market data and executing and managing orders on CBL, published as rules of engagement against the FIX 4.4 specificat...

Scroll for all 8

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Pricing Plans 1

Published pricing tiers and plan structures.

Xpansiv Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Xpansiv Rate Limits

0 limits

RATE LIMITS

Security Posture 2

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

Xpansiv Authentication

http (bearer)/http (basic)/apiKey · 3 schemes

SECURITY

Xpansiv Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Xpansiv Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 4

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Build 4

SDKs, sample code, and the tooling you integrate with

Access & Security 3

Authentication, authorization, and security posture

Operate 2

Status, limits, changes, and where to get help

Commercial 3

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
aid: xpansiv
name: Xpansiv
description: Xpansiv is market infrastructure for global environmental and energy commodities — carbon credits, renewable
  energy certificates, water, low-carbon fuels and recycled materials. It operates CBL, the largest spot exchange for environmental
  commodities, the Evolution Markets and OTX brokerage and execution desks, the H2OX water market and the ACE and JSEV carbon
  platforms, alongside the environmental registries it acquired with APX in 2022 — NAR (North American Renewables Registry),
  TIGR, I-REC, I-TRACK-G and the Xpansiv-powered digital fuels registries. Its public developer portal at developer.xpansiv.com
  publishes eleven OpenAPI descriptions across Xpansiv Connect (environmental commodity portfolio, retirement and transfer),
  Xpansiv Managed Solutions, the NAR and TIGR registry client APIs, the Optimal Outcomes suite and the APX Power Markets file
  registry, plus a FIX 4.4 marketplace protocol specification, Xpansiv Data market-data APIs and a first-party Python SDK.
url: https://raw.githubusercontent.com/api-evangelist/xpansiv/refs/heads/main/apis.yml
image: https://kinlane-productions2.s3.amazonaws.com/apis-io/apis-io-logo.png
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-09-04'
modified: '2026-09-04'
tags:
- Company
- Environmental Commodities
- Carbon Markets
- Renewable Energy Certificates
- Registries
- Market Data
- Trading
- Energy
- Sustainability
- Climate
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: xpansiv-connect
  name: Xpansiv Connect API
  description: Xpansiv Connect exposes environmental commodity account, portfolio, exchange, forward deal, issuance, project,
    reference data, report, retirement, split lot and transfer operations over REST. Bearer tokens are issued by the Xpansiv
    authorization server at auth.xpansiv.com.
  humanURL: https://developer.xpansiv.com/developer-portal/xpansiv-connect
  baseURL: https://connect.xpansiv.com/app/api/v1
  tags:
  - Carbon Markets
  - Retirements
  - Portfolio
  properties:
  - type: OpenAPI
    url: openapi/xpansiv-connect-openapi.yml
  - type: Documentation
    url: https://developer.xpansiv.com/developer-portal/xpansiv-connect
  - type: GettingStarted
    url: https://developer.xpansiv.com/developer-portal/xpansiv-connect/getting-started
  - type: Overlay
    url: overlays/xpansiv-connect-overlay.yaml
- aid: xpansiv-managed-solutions
  name: Xpansiv Managed Solutions API
  description: Access facilities, transactions, meter readings, clean transportation, market, qualified reporting entity,
    building type, remote data collector and utility data from an Xpansiv Managed Solutions account using a bearer API key
    generated on the account API Access page.
  humanURL: https://developer.xpansiv.com/developer-portal/xpansiv-managed-solutions
  baseURL: https://www.ms.xpansiv.com/app/api/v1
  tags:
  - Renewable Energy Certificates
  - Meter Data
  properties:
  - type: OpenAPI
    url: openapi/xpansiv-managed-solutions-openapi.yml
  - type: Documentation
    url: https://developer.xpansiv.com/developer-portal/xpansiv-managed-solutions
  - type: Authentication
    url: https://developer.xpansiv.com/developer-portal/xpansiv-managed-solutions/authorization
  - type: Overlay
    url: overlays/xpansiv-managed-solutions-overlay.yaml
- aid: xpansiv-data
  name: Xpansiv Data API
  description: Real-time, end-of-day and historical transaction-based market data for environmental and energy commodities,
    sourced from CBL and global intermediaries including Evolution Markets. Delivered as time series, data-lake file groups
    and NCSV downloads over a JWT-authenticated REST API, with a first-party Python SDK.
  humanURL: https://developer.xpansiv.com/developer-portal/xpansiv-data
  baseURL: https://api.data.xpansiv.com
  tags:
  - Market Data
  - Time Series
  properties:
  - type: Documentation
    url: https://developer.xpansiv.com/developer-portal/xpansiv-data
  - type: Authentication
    url: https://developer.xpansiv.com/developer-portal/xpansiv-data/authorization
  - type: ErrorCatalog
    url: https://developer.xpansiv.com/developer-portal/xpansiv-data/errors
  - type: SDKs
    url: https://developer.xpansiv.com/developer-portal/xpansiv-data/sdk
- aid: xpansiv-nar-registry
  name: NAR Registry Client API
  description: The North American Renewables Registry client API for retrieving and transacting NAR monthly vintage renewable
    energy certificates — account, ledger, subaccount and system operations behind an OAuth2 password-grant JWT.
  humanURL: https://developer.xpansiv.com/developer-portal/nar-registry
  baseURL: https://narenewables2.apx.com/ClientAPI
  tags:
  - Registries
  - Renewable Energy Certificates
  properties:
  - type: OpenAPI
    url: openapi/xpansiv-nar-registry-client-openapi.yml
  - type: Documentation
    url: https://developer.xpansiv.com/developer-portal/nar-registry
  - type: Authentication
    url: https://developer.xpansiv.com/developer-portal/nar-registry/authentication
  - type: Overlay
    url: overlays/xpansiv-nar-registry-client-overlay.yaml
- aid: xpansiv-tigr-registry
  name: TIGRS Registry Client API
  description: The Tradable Instrument for Global Renewables (TIGR) registry client API for retrieving and retiring TIGR certificates
    — corporate entity, ledger, subaccount and system operations behind an OAuth2 password-grant JWT.
  humanURL: https://developer.xpansiv.com/developer-portal/tigr-registry
  baseURL: https://tigrsregistry.apx.com/clientapi
  tags:
  - Registries
  - Renewable Energy Certificates
  properties:
  - type: OpenAPI
    url: openapi/xpansiv-tigr-registry-client-openapi.yml
  - type: Documentation
    url: https://developer.xpansiv.com/developer-portal/tigr-registry
  - type: Authentication
    url: https://developer.xpansiv.com/developer-portal/tigr-registry/authentication
  - type: Overlay
    url: overlays/xpansiv-tigr-registry-client-overlay.yaml
- aid: xpansiv-optimal-outcomes
  name: Xpansiv Optimal Outcomes APIs
  description: The Optimal Outcomes suite — a system health API, a file registry, a meter-data telemetry API, a reporting
    service, a resource API and a transfer position external API for viewing and managing environmental instruments, transfer
    and retirement batches, ledgers and subaccounts.
  humanURL: https://developer.xpansiv.com/developer-portal/optimal-outcomes
  baseURL: https://optimalapi-ext.apx.com
  tags:
  - Registries
  - Telemetry
  - Reporting
  properties:
  - type: OpenAPI
    url: openapi/xpansiv-optimal-system-openapi.yml
  - type: OpenAPI
    url: openapi/xpansiv-optimal-file-registry-openapi.yml
  - type: OpenAPI
    url: openapi/xpansiv-optimal-telemetry-openapi.yml
  - type: OpenAPI
    url: openapi/xpansiv-optimal-reporting-openapi.yml
  - type: OpenAPI
    url: openapi/xpansiv-optimal-resource-openapi.yml
  - type: OpenAPI
    url: openapi/xpansiv-optimal-transfer-position-openapi.yml
  - type: Documentation
    url: https://developer.xpansiv.com/developer-portal/optimal-outcomes
  - type: Quickstart
    url: https://developer.xpansiv.com/developer-portal/optimal-outcomes/quickstart
  - type: Overlay
    url: overlays/xpansiv-optimal-transfer-position-overlay.yaml
- aid: xpansiv-apx-power-markets
  name: APX Power Markets File Registry API
  description: The APX MarketSuite file registry and reporting API used to submit and retrieve ISO scheduling files for CAISO,
    ERCOT, PJM, SPP, MISO, ISONE and NYISO, alongside the XML/XSD schedule schemas and REST report endpoints.
  humanURL: https://developer.xpansiv.com/developer-portal/xpansiv-power/rest_api
  baseURL: https://pm-file-api.apx.com
  tags:
  - Energy
  - Power Markets
  - Scheduling
  properties:
  - type: OpenAPI
    url: openapi/xpansiv-apx-power-markets-file-registry-openapi.yml
  - type: Documentation
    url: https://developer.xpansiv.com/developer-portal/xpansiv-power/rest_api
  - type: APIReference
    url: https://developer.xpansiv.com/developer-portal/xpansiv-power/rest_api/apiendpoints
  - type: Authentication
    url: https://developer.xpansiv.com/developer-portal/xpansiv-power/rest_api/authentication
  - type: Postman
    url: https://developer.xpansiv.com/developer-portal/xpansiv-power/rest_api/postman
  - type: Overlay
    url: overlays/xpansiv-apx-power-markets-file-registry-overlay.yaml
- aid: xpansiv-marketplace-fix
  name: Xpansiv Marketplace FIX API
  description: The Xpansiv Marketplace Server API for retrieving real-time market data and executing and managing orders on
    CBL, published as rules of engagement against the FIX 4.4 specification from the FIX Trading Community, with Transaction,
    DropCopy and MarketData session types.
  humanURL: https://developer.xpansiv.com/developer-portal/marketplace
  baseURL: https://developer.xpansiv.com/developer-portal/marketplace/fix-api
  tags:
  - Trading
  - Market Data
  - FIX Protocol
  properties:
  - type: Documentation
    url: https://developer.xpansiv.com/developer-portal/marketplace
  - type: APIReference
    url: https://developer.xpansiv.com/developer-portal/marketplace/fix-api
x-enrichment:
  date: '2026-09-04'
  status: enriched
  artifacts_added: 41
  pass: local-v3
common:
- type: Website
  url: https://www.xpansiv.com/
- type: DeveloperPortal
  url: https://developer.xpansiv.com/
- type: Documentation
  url: https://developer.xpansiv.com/developer-portal
- type: APIReference
  url: https://developer.xpansiv.com/developer-portal
- type: GettingStarted
  url: https://developer.xpansiv.com/developer-portal/xpansiv-connect/getting-started
- type: Support
  url: https://support.xpansiv.com/
- type: SignUp
  url: https://connect.xpansiv.com/app/login/
- type: Blog
  url: https://www.xpansiv.com/blog
- type: TermsOfService
  url: https://www.xpansiv.com/general-terms-of-use
- type: PrivacyPolicy
  url: https://www.xpansiv.com/privacy-policy
- type: Postman
  url: https://developer.xpansiv.com/developer-portal/xpansiv-power/rest_api/postman
- type: LLMsTxt
  url: llms/xpansiv-llms.txt
- type: MCPServer
  url: mcp/xpansiv-mcp.yml
- type: ToolCrosswalk
  url: mcp/xpansiv-tool-crosswalk.yml
- type: WellKnown
  url: well-known/xpansiv-well-known.yml
- type: Packages
  url: packages/xpansiv-packages.yml
- type: SDKs
  url: packages/xpansiv-packages.yml
- type: Authentication
  url: authentication/xpansiv-authentication.yml
- type: OAuthScopes
  url: scopes/xpansiv-scopes.yml
- type: Conventions
  url: conventions/xpansiv-conventions.yml
- type: ErrorCatalog
  url: errors/xpansiv-problem-types.yml
- type: Lifecycle
  url: lifecycle/xpansiv-lifecycle.yml
- type: Conformance
  url: conformance/xpansiv-conformance.yml
- type: DataModel
  url: data-model/xpansiv-data-model.yml
- type: DomainSecurity
  url: security/xpansiv-domain-security.yml
- type: RateLimits
  url: rate-limits/xpansiv-rate-limits.yml
- type: Plans
  url: plans/xpansiv-plans-pricing.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Sandbox
  url: sandbox/xpansiv-sandbox.yml
- type: Overlay
  url: overlays/xpansiv-connect-overlay.yaml

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