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.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Xpansiv the way a machine reads it — 14 machine-readable artifacts across 11 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Xpansiv scores 51.8/100 (developing), with a separate agent-readiness read of 50/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-04 · rubric v0.18.3
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How we profile Xpansiv
Each block below is one kind of artifact we hold for Xpansiv. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 8
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
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 within the panel for all 8 ·
MCP Servers 1
Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.
Model Context Protocol servers that expose these APIs to AI agents.
Xpansiv Developer Portal MCP Server
MCP SERVERPricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Xpansiv Rate Limits
RATE LIMITSSecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.
OAuth scopes governing access to this provider's APIs.
Resources
Every other property we hold for Xpansiv — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
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
← All providers · Data indexed from github.com/api-evangelist/xpansiv · machine-readable index on apis.io
This is an independent, third-party profile of Xpansiv, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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