Scope3
Scope3 is the source of truth for greenhouse-gas emissions data in media and advertising, and operates the Interchange for agent-to-agent (agentic) advertising. 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-powered programmatic advertising through an agentic buyer/storefront platform. Scope3 exposes three public API 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 Agentic Platform at api.agentic.scope3.com with a hosted MCP server, a `scope3` CLI, and published buyer/storefront Agent Skills. Backed by GV.
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 Scope3 the way a machine reads it — 20 machine-readable artifacts across 15 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 53.7/100 (developing), with a separate agent-readiness read of 71/100 (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.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
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 15
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 Agentic Platform API
The Interchange for agent-to-agent advertising: buyer and storefront personas for inventory discovery, campaign and creative orchestration, bundles, signals, and billing, served...
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.
Scroll 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.yml
MCP SERVEREvent 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.
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 3
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 6
Pagination, idempotency, versioning, errors, and events
Build 4
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 3
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
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