Scope3
Scope3 is the source of truth for greenhouse-gas emissions data in media and advertising, and operates Scope3 Interchange, an agentic advertising platform where buyer agents and seller storefronts transact on the open Ad Context Protocol (AdCP). Its APIs let buyers, publishers and platforms measure the carbon footprint of every ad impression and creative across channels, benchmark against country/channel percentiles, and run AI-driven programmatic advertising end to end. Scope3 publishes four OpenAPI documents across three surfaces: the Carbon Calculator (Measurement) API at api.scope3.com/v2, the AI Impact Measurement API at aiapi.scope3.com (energy, gCO2e and water per inference), and the Interchange Buyer and Storefront v2 APIs at api.interchange.io with 481 operations between them. Interchange is built for AI agents as primary callers: hosted remote MCP endpoints with OAuth (RFC 8414 metadata, dynamic client registration, PKCE), an A2A agent card, three published Agent Skills, a documented error envelope, IETF draft-7 rate-limit headers and a published IU pricing model. Backed by GV.
Solid contracts, transparent operations, and an easy start — typically complete on four or five facets with one clear soft spot.
API Evangelist profiles Scope3 the way a machine reads it — 74 machine-readable artifacts across 4 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 — Scope3 scores 65.8/100 (strong), with a separate agent-readiness read of 66/100 (agent native). 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 2026-09-08 · rubric v0.20.0
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How we profile Scope3
Each block below is one kind of artifact we hold for Scope3. 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 51
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.
Scope3 AI Impact Measurement API
The AI Impact Measurement API from Scope3 — 1 operation(s) for ai impact measurement.
Scope3 Benchmarks API
The Benchmarks API from Scope3 — 1 operation(s) for benchmarks.
Scope3 Creative API
The Creative API from Scope3 — 1 operation(s) for creative.
Scope3 Data API
The Data API from Scope3 — 2 operation(s) for data.
Scope3 Gpu API
The Gpu API from Scope3 — 2 operation(s) for gpu.
Scope3 Impact API
The Impact API from Scope3 — 1 operation(s) for impact.
Scope3 Measure API
The Measure API from Scope3 — 1 operation(s) for measure.
Scope3 Model API
The Model API from Scope3 — 4 operation(s) for model.
Scope3 Node API
The Node API from Scope3 — 2 operation(s) for node.
Scope3 Reload API
The Reload API from Scope3 — 1 operation(s) for reload.
Scope3 Saved Lists API
The Saved Lists API from Scope3 — 1 operation(s) for saved lists.
Scope3 Segment API
The Segment API from Scope3 — 2 operation(s) for segment.
Scope3 Signals API
The Signals API from Scope3 — 1 operation(s) for signals.
Scope3 Status API
The Status API from Scope3 — 1 operation(s) for status.
Scope3 Account API
Account management, service tokens, and preferences
Scope3 Activity API
The Activity API from Scope3 — 2 operation(s) for activity.
Scope3 Advertisers API
Manage advertisers
Scope3 AI Usage API
Storefront AI token usage visibility by model
Scope3 Asks API
What you are waiting on Scope3 for — support, product, and supply asks in one list
Scope3 Audit Logs API
The Audit Logs API from Scope3 — 1 operation(s) for audit logs.
Scope3 Brands API
The Brands API from Scope3 — 1 operation(s) for brands.
Scope3 Buyer Billing API
Consolidated invoicing for buyers — invoices and pending invoice items issued by Scope3 across the buyer customer.
Scope3 Campaigns API
Manage advertising campaigns
Scope3 Creatives API
Build, manage, and sync campaign creatives via AdCP Creative Protocol
Scope3 Event Sources API
Manage event source configurations and log conversion/marketing events for attribution
Scope3 MCP API
Model Context Protocol endpoints for AI agents
Scope3 Measurement API
Measurement sources, records, context, and freshness
Scope3 Media Billing API
The Media Billing API from Scope3 — 5 operation(s) for media billing.
Scope3 Moderation API
The Moderation API from Scope3 — 1 operation(s) for moderation.
Scope3 Notifications API
The Notifications API from Scope3 — 4 operation(s) for notifications.
Scope3 Optimization Suggestions API
The Optimization Suggestions API from Scope3 — 4 operation(s) for optimization suggestions.
Scope3 Product Discovery API
Discover and select products
Scope3 Products API
The Products API from Scope3 — 1 operation(s) for products.
Scope3 Property Lists API
Validate property lists against AAO registry
Scope3 Release Updates API
The Release Updates API from Scope3 — 2 operation(s) for release updates.
Scope3 Reporting API
Access performance metrics
Scope3 Signup API
Request reviewed access to Interchange
Scope3 Storefront Activity API
Audit log of configuration and inventory changes on the storefront
Scope3 Storefront Ad Server Buyer Routing API
The Storefront Ad Server Buyer Routing API from Scope3 — 12 operation(s) for storefront ad server buyer routing.
Scope3 Storefront Ad Server Catalog API
The Storefront Ad Server Catalog API from Scope3 — 11 operation(s) for storefront ad server catalog.
Scope3 Storefront Ad Server Diagnostics API
The Storefront Ad Server Diagnostics API from Scope3 — 2 operation(s) for storefront ad server diagnostics.
Scope3 Storefront Agents API
List and manage registered sales, signals, and outcomes agents
Scope3 Storefront API
Manage storefront and inventory sources
Scope3 Storefront Billing API
Payout bank details and billing configuration for storefronts
Scope3 Storefront Proposals API
The Storefront Proposals API from Scope3 — 3 operation(s) for storefront proposals.
Scope3 Storefronts API
The Storefronts API from Scope3 — 18 operation(s) for storefronts.
Scope3 Supply Requests API
The Supply Requests API from Scope3 — 3 operation(s) for supply requests.
Scope3 Syndication API
Syndicate resources to ADCP agents
Scope3 Tasks API
Track async operation status
Scope3 Update Proposals API
The Update Proposals API from Scope3 — 1 operation(s) for update proposals.
Scope3 Webhook Subscriptions API
The Webhook Subscriptions API from Scope3 — 2 operation(s) for webhook subscriptions.
Scroll within the panel for all 51 ·
Open Collections 15
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONAI Impact Measurement API
OPEN COLLECTIONAI Impact Measurement Benchmarks API
OPEN COLLECTIONAI Impact Measurement Creative API
OPEN COLLECTIONAI Impact Measurement Data API
OPEN COLLECTIONAI Impact Measurement Gpu API
OPEN COLLECTIONAI Measurement Impact API
OPEN COLLECTIONAI Impact Measurement Measure API
OPEN COLLECTIONAI Impact Measurement Model API
OPEN COLLECTIONAI Impact Measurement Node API
OPEN COLLECTIONAI Impact Measurement Reload API
OPEN COLLECTIONAI Impact Measurement Saved Lists API
OPEN COLLECTIONAI Impact Measurement Segment API
OPEN COLLECTIONAI Impact Measurement Signals API
OPEN COLLECTIONAI Impact Measurement Status API
OPEN COLLECTIONScroll within the panel for all 15 ·
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.
Scope3 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.
Scope3 Plans Pricing
PLANSRate 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.
Scope3 Rate Limits
RATE LIMITSEvent Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Scope3 Webhooks
ASYNCAPISecurity 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.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Scope3 — 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 5
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 7
MCP servers, agent skills, and machine-readable catalogs
Scroll within the panel for all 7 ·
Design & Contract 7
Pagination, idempotency, versioning, errors, and events
Scroll within the panel for all 7 ·
Build 5
SDKs, sample code, and the tooling you integrate with
Access & Security 3
Authentication, authorization, and security posture
Operate 4
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 6
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/scope3 · machine-readable index on apis.io
This is an independent, third-party profile of Scope3, 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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