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Circuit

Circuit (operating publicly as Spoke; legal entity Circuit Routing Limited) builds last-mile delivery route-optimization software. Its products are Route Planner, a free driver app for uploading stops, optimizing multi-stop routes and navigating; Dispatch, a multi-driver delivery-management platform with route planning, live tracking and proof of delivery for courier operations; and Connect, a marketplace that lets retailers discover local couriers and track deliveries. The Spoke Public API (formerly the Circuit for Teams API) is an HTTP/JSON API that lets teams manage plans, stops, unassigned stops, drivers, depots, routes, members and long-running operations programmatically, optimize and distribute plans across drivers, run full-text stop search with a filtering DSL, and subscribe to webhook events for delivery workflows.

agent native

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.

Kin Score

API Evangelist profiles Circuit the way a machine reads it — 16 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 — Circuit scores 55.7/100 (developing), with a separate agent-readiness read of 70/100 (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 Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 55.7/100 · developing
Contract Quality 16.1 / 25
Developer Ergonomics 13.0 / 20
Commercial Clarity 6.3 / 20
Operational Transparency 10.3 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 70/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3

How we profile Circuit

Each block below is one kind of artifact we hold for Circuit. 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 11

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.

Circuit Depots API

Endpoints to operate on [Depots](/docs/models/depot) resources. This resource is currently read-only on the API.

Circuit Drivers API

Endpoints to operate on [Drivers](/docs/models/driver) resources.

Circuit Live Plans API

Endpoints to operate on [Plans](/docs/models/plan) resources when it's pending re-optimization and re-distribution. You must use these endpoints to apply the changes when any [L...

Circuit Live Stops API

Endpoints to operate on [Stop](/docs/models/stop) resources when the plan is already optimized and therefore not writable. All the endpoints return the field `pending`. This fie...

Circuit Members API

Endpoints to operate on Members resources.

Circuit Operations API

Endpoints to operate on [Operations](/docs/models/operation) resources.

Circuit Plans API

Endpoints to operate on [Plans](/docs/models/plan) resources.

Circuit Routes API

Endpoints to operate on [Routes](/docs/models/route) resources. This resource is currently read-only on the API.

Circuit Stops API

Endpoints to operate on [Stop](/docs/models/stop) resources. For any [Plans](/docs/models/plan) created before 2023-04-01 the stop collections and all related operations will no...

Circuit Team API

Endpoints to retrieve [Custom Stop Properties](/docs/models/customStopProperty).

Circuit Unassigned Stops API

Endpoints to operate on [Unassigned Stop](/docs/models/unassignedStop) resources.

Scroll within the panel for all 11 ·

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.

circuit-mcp.yml

MCP SERVER

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.

Circuit Rate Limits

6 limits

RATE LIMITS

Event 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.

Security 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.

Circuit Authentication

http · 2 schemes

SECURITY

Circuit Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Every other property we hold for Circuit — 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 2

Portal, sign-up, and the first successful call

Documentation 3

Reference material describing how the API behaves

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

Build 1

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Learn 1

Tutorials, courses, talks, and written guidance

Commercial 3

Pricing, plans, and the legal terms of use

Company 3

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/circuit · machine-readable index on apis.io