Loop

Loop is a full-stack, AI-powered logistics data platform that unifies the fragmented operational and financial data of the physical economy. Founded by former Uber Freight leaders Matt McKinney and Shaosu Liu, Loop began in freight audit and payment and has expanded into an intelligence layer spanning freight audit, parcel and carrier-invoice auditing, real-time shipment visibility, parcel contract optimization, carrier payments, and autonomous exception management (DUX and the Exception Agent). The Loop developer platform exposes a REST API (api.loop.com/v1) for ingesting artifacts (invoices, shipment records, purchase orders), resolving business exceptions, managing organizations and factoring/invoicing relationships, and reading payable/receivable invoices and payments, plus a separate Onboarding API and Svix-based webhooks. Loop has raised $210M total, including a $95M Series C, from Valor Equity Partners, 8VC, Founders Fund, Index Ventures, J.P. Morgan Growth Equity, and others.

Loop publishes 14 API contracts indexed on the APIs.io network, including Artifacts API, Artifacts Schema Validated API, Business Exceptions API, and 11 more. Tagged areas include Company, Logistics, Supply Chain, Freight, and Freight Audit.

The Loop catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Loop’s developer surface includes authentication, documentation, API reference, getting-started guide, engineering blog, signup flow, and 21 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

46.3/100 developing ▬ flat Agent 32/100 agent ready Front door AI 5/6 prominent Heartbeat 94/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

2 published contracts 3 Agent Skills

Company Logistics Supply Chain Freight Freight Audit Payments Transportation Artificial Intelligence Data Platform

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Freight Billing & Settlement Management

BC-2530

payable-invoice-reviewspayable-invoicespaymentsreceivable-invoices

GET /v1/payable-invoices/{qid}/review GET /v1/payments

Supply Chain Management

BC-520

shipment-jobs

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 46.3/100 · developing

Contract Quality 10.3 / 19

Developer Ergonomics 8.1 / 15

Access Clarity 4.3 / 15

Operational Transparency 2.3 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 3.8 / 15

Create-or-Update Ergonomics 3.3 / 10

Agent readiness — 32/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 0 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Payments 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.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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It updates itself when the score changes. Paste this where you link to your API docs:

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Protected Resource Metadata +5 pts — a served /.well-known/oauth-protected-resource carrying `resource` (documented), and naming its authorization_servers (verified)

5 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 28.9 — up to +14.2 composite points
Contract Quality scores 54.7 — up to +11.3 composite points
Operational Transparency scores 23.7 — up to +9.9 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/loop/apis.yml: open an issue on github.com/api-evangelist/loop to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 14

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

Loop Artifacts API

The artifacts API from Loop — 6 operation(s) for artifacts.

Loop Artifacts Schema Validated API

The artifacts-schema-validated API from Loop — 6 operation(s) for artifacts-schema-validated.

Loop Business Exceptions API

The business-exceptions API from Loop — 3 operation(s) for business-exceptions.

Loop Factoring Relationships API

The factoring-relationships API from Loop — 2 operation(s) for factoring-relationships.

Loop Invoicing Relationships API

The invoicing-relationships API from Loop — 2 operation(s) for invoicing-relationships.

Loop Onboarding.api.loop.com API

The onboarding.api.loop.com API from Loop — 1 operation(s) for onboarding.api.loop.com.

Loop Organizations API

The organizations API from Loop — 3 operation(s) for organizations.

Loop Payable Allocations API

The payable-allocations API from Loop — 2 operation(s) for payable-allocations.

Loop Payable Invoice Reviews API

The payable-invoice-reviews API from Loop — 2 operation(s) for payable-invoice-reviews.

Loop Payable Invoices API

The payable-invoices API from Loop — 2 operation(s) for payable-invoices.

Loop Payments API

The payments API from Loop — 2 operation(s) for payments.

Loop Ping API

The ping API from Loop — 1 operation(s) for ping.

Loop Receivable Invoices API

The receivable-invoices API from Loop — 3 operation(s) for receivable-invoices.

Loop Shipment Jobs API

The shipment-jobs API from Loop — 2 operation(s) for shipment-jobs.

Scroll for all 14

Open Collections 13

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Loop Onboarding artifacts API

OPEN COLLECTION

Loop Onboarding artifacts artifacts-schema-validated API

OPEN COLLECTION

Loop Onboarding artifacts business-exceptions API

OPEN COLLECTION

Loop Onboarding artifacts factoring-relationships API

OPEN COLLECTION

Loop Onboarding artifacts invoicing-relationships API

OPEN COLLECTION

Loop Onboarding artifacts onboarding.api.loop.com API

OPEN COLLECTION

Loop Onboarding artifacts organizations API

OPEN COLLECTION

Loop Onboarding artifacts payable-allocations API

OPEN COLLECTION

Loop Onboarding artifacts payable-invoices API

OPEN COLLECTION

Loop Onboarding artifacts payments API

OPEN COLLECTION

Loop Onboarding artifacts ping API

OPEN COLLECTION

Loop Onboarding artifacts receivable-invoices API

OPEN COLLECTION

Loop Onboarding artifacts shipment-jobs API

OPEN COLLECTION

Scroll for all 13

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

Ingest and audit a payable invoice with Loop

AGENT SKILL

Onboard an organization and set up a factoring relationship

AGENT SKILL

Resolve Loop business exceptions on an entity

AGENT SKILL

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Loop Webhooks

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Loop API Rules

61 rules · 52 errors 8 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Loop Openapi Overlay

3 actions · update · loop-openapi-original.json

DERIVED

Security Posture 2

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

Loop Authentication

http · 1 scheme

SECURITY

Loop Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Loop Agentic Access

41 operations · 15 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conformance

ErrorCatalog

Lifecycle

Conventions

Idempotency

DataModel

Webhooks

Scroll for all 7

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

TrustCenter

TrustCenter

Operate 1

Status, limits, changes, and where to get help

StatusPage

StatusPage

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

aid: loop
name: Loop
description: Loop is a full-stack, AI-powered logistics data platform that unifies the fragmented operational and financial
  data of the physical economy. Founded by former Uber Freight leaders Matt McKinney and Shaosu Liu, Loop began in freight
  audit and payment and has expanded into an intelligence layer spanning freight audit, parcel and carrier-invoice auditing,
  real-time shipment visibility, parcel contract optimization, carrier payments, and autonomous exception management (DUX
  and the Exception Agent). The Loop developer platform exposes a REST API (api.loop.com/v1) for ingesting artifacts (invoices,
  shipment records, purchase orders), resolving business exceptions, managing organizations and factoring/invoicing relationships,
  and reading payable/receivable invoices and payments, plus a separate Onboarding API and Svix-based webhooks. Loop has raised
  $210M total, including a $95M Series C, from Valor Equity Partners, 8VC, Founders Fund, Index Ventures, J.P. Morgan Growth
  Equity, and others.
url: https://raw.githubusercontent.com/api-evangelist/loop/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 8vc
- fifth-wall
- index-ventures
x-tier: stub
x-tier-reason: portfolio-lead
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
image: https://cdn.prod.website-files.com/668bb14a7a97da320e5022ed/66c70f294893e981b7a38704_OG%20Image.webp
x-docs-platform: docusaurus
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-03
x-docs-hosting: vercel
tags:
- Company
- Logistics
- Supply Chain
- Freight
- Freight Audit
- Payments
- Transportation
- Artificial Intelligence
- Data Platform
apis:
- aid: loop:loop-artifacts-api
  name: Loop Artifacts API
  description: The artifacts API from Loop — 6 operation(s) for artifacts.
  humanURL: https://docs.loop.com/developers/
  baseURL: https://api.loop.com
  tags:
  - Artifacts
  tags_raw:
  - artifacts
  properties:
  - type: OpenAPI
    url: openapi/loop-artifacts-api-openapi.yml
  - type: APIReference
    url: https://docs.loop.com/developers/api-reference
- aid: loop:loop-artifacts-schema-validated-api
  name: Loop Artifacts Schema Validated API
  description: The artifacts-schema-validated API from Loop — 6 operation(s) for artifacts-schema-validated.
  humanURL: https://docs.loop.com/developers/
  baseURL: https://api.loop.com
  tags:
  - artifacts-schema-validated
  properties:
  - type: OpenAPI
    url: openapi/loop-artifacts-schema-validated-api-openapi.yml
  - type: APIReference
    url: https://docs.loop.com/developers/api-reference
- aid: loop:loop-business-exceptions-api
  name: Loop Business Exceptions API
  description: The business-exceptions API from Loop — 3 operation(s) for business-exceptions.
  humanURL: https://docs.loop.com/developers/
  baseURL: https://api.loop.com
  tags:
  - business-exceptions
  properties:
  - type: OpenAPI
    url: openapi/loop-business-exceptions-api-openapi.yml
  - type: APIReference
    url: https://docs.loop.com/developers/api-reference
- aid: loop:loop-factoring-relationships-api
  name: Loop Factoring Relationships API
  description: The factoring-relationships API from Loop — 2 operation(s) for factoring-relationships.
  humanURL: https://docs.loop.com/developers/
  baseURL: https://api.loop.com
  tags:
  - factoring-relationships
  properties:
  - type: OpenAPI
    url: openapi/loop-factoring-relationships-api-openapi.yml
  - type: APIReference
    url: https://docs.loop.com/developers/api-reference
- aid: loop:loop-invoicing-relationships-api
  name: Loop Invoicing Relationships API
  description: The invoicing-relationships API from Loop — 2 operation(s) for invoicing-relationships.
  humanURL: https://docs.loop.com/developers/
  baseURL: https://api.loop.com
  tags:
  - invoicing-relationships
  properties:
  - type: OpenAPI
    url: openapi/loop-invoicing-relationships-api-openapi.yml
  - type: APIReference
    url: https://docs.loop.com/developers/api-reference
- aid: loop:loop-onboarding-api-loop-com-api
  name: Loop Onboarding.api.loop.com API
  description: The onboarding.api.loop.com API from Loop — 1 operation(s) for onboarding.api.loop.com.
  humanURL: https://docs.loop.com/developers/
  baseURL: https://api.loop.com
  tags:
  - onboarding.api.loop.com
  properties:
  - type: OpenAPI
    url: openapi/loop-onboarding-api-loop-com-api-openapi.yml
  - type: APIReference
    url: https://docs.loop.com/developers/api-reference
- aid: loop:loop-organizations-api
  name: Loop Organizations API
  description: The organizations API from Loop — 3 operation(s) for organizations.
  humanURL: https://docs.loop.com/developers/
  baseURL: https://api.loop.com
  tags:
  - Organization
  tags_raw:
  - organizations
  properties:
  - type: OpenAPI
    url: openapi/loop-organizations-api-openapi.yml
  - type: APIReference
    url: https://docs.loop.com/developers/api-reference
- aid: loop:loop-payable-allocations-api
  name: Loop Payable Allocations API
  description: The payable-allocations API from Loop — 2 operation(s) for payable-allocations.
  humanURL: https://docs.loop.com/developers/
  baseURL: https://api.loop.com
  tags:
  - payable-allocations
  properties:
  - type: OpenAPI
    url: openapi/loop-payable-allocations-api-openapi.yml
  - type: APIReference
    url: https://docs.loop.com/developers/api-reference
- aid: loop:loop-payable-invoice-reviews-api
  name: Loop Payable Invoice Reviews API
  description: The payable-invoice-reviews API from Loop — 2 operation(s) for payable-invoice-reviews.
  humanURL: https://docs.loop.com/developers/
  baseURL: https://api.loop.com
  tags:
  - payable-invoice-reviews
  properties:
  - type: OpenAPI
    url: openapi/loop-payable-invoice-reviews-api-openapi.yml
  - type: APIReference
    url: https://docs.loop.com/developers/api-reference
- aid: loop:loop-payable-invoices-api
  name: Loop Payable Invoices API
  description: The payable-invoices API from Loop — 2 operation(s) for payable-invoices.
  humanURL: https://docs.loop.com/developers/
  baseURL: https://api.loop.com
  tags:
  - payable-invoices
  properties:
  - type: OpenAPI
    url: openapi/loop-payable-invoices-api-openapi.yml
  - type: APIReference
    url: https://docs.loop.com/developers/api-reference
- aid: loop:loop-payments-api
  name: Loop Payments API
  description: The payments API from Loop — 2 operation(s) for payments.
  humanURL: https://docs.loop.com/developers/
  baseURL: https://api.loop.com
  tags:
  - Payments
  tags_raw:
  - payments
  properties:
  - type: OpenAPI
    url: openapi/loop-payments-api-openapi.yml
  - type: APIReference
    url: https://docs.loop.com/developers/api-reference
- aid: loop:loop-ping-api
  name: Loop Ping API
  description: The ping API from Loop — 1 operation(s) for ping.
  humanURL: https://docs.loop.com/developers/
  baseURL: https://api.loop.com
  tags:
  - Ping
  tags_raw:
  - ping
  properties:
  - type: OpenAPI
    url: openapi/loop-ping-api-openapi.yml
  - type: APIReference
    url: https://docs.loop.com/developers/api-reference
- aid: loop:loop-receivable-invoices-api
  name: Loop Receivable Invoices API
  description: The receivable-invoices API from Loop — 3 operation(s) for receivable-invoices.
  humanURL: https://docs.loop.com/developers/
  baseURL: https://api.loop.com
  tags:
  - receivable-invoices
  properties:
  - type: OpenAPI
    url: openapi/loop-receivable-invoices-api-openapi.yml
  - type: APIReference
    url: https://docs.loop.com/developers/api-reference
- aid: loop:loop-shipment-jobs-api
  name: Loop Shipment Jobs API
  description: The shipment-jobs API from Loop — 2 operation(s) for shipment-jobs.
  humanURL: https://docs.loop.com/developers/
  baseURL: https://api.loop.com
  tags:
  - shipment-jobs
  properties:
  - type: OpenAPI
    url: openapi/loop-shipment-jobs-api-openapi.yml
  - type: APIReference
    url: https://docs.loop.com/developers/api-reference
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: CapabilityMap
  url: capabilities/loop-capability-edges.yml
  name: Loop Business Capability Map
- type: DomainSecurity
  url: security/loop-domain-security.yml
- type: AgenticAccess
  url: agentic-access/loop-agentic-access.yml
- type: Authentication
  url: authentication/loop-authentication.yml
- type: Website
  url: https://loop.com
- type: DeveloperPortal
  url: https://docs.loop.com
- type: Documentation
  url: https://docs.loop.com
- type: APIReference
  url: https://docs.loop.com/developers/api-reference
- type: GettingStarted
  url: https://docs.loop.com/integration/
- type: Blog
  url: https://loop.com/engineering-blog
- type: SignUp
  url: https://app.loop.com
- type: Login
  url: https://app.loop.com
- type: StatusPage
  url: https://status.loop.com
- type: TermsOfService
  url: https://loop.com/legal/terms-and-conditions
- type: PrivacyPolicy
  url: https://loop.com/legal/privacy-policy
- type: TrustCenter
  url: https://trust.loop.com
- type: X-MCPServerCandidate
  url: mcp/loop-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: LLMsTxt
  url: llms/loop-llms.txt
- type: Overlay
  url: overlays/loop-openapi-overlay.yaml
- type: Conformance
  url: conformance/loop-conformance.yml
- type: ErrorCatalog
  url: errors/loop-problem-types.yml
- type: Lifecycle
  url: lifecycle/loop-lifecycle.yml
- type: Conventions
  url: conventions/loop-conventions.yml
- type: Idempotency
  url: conventions/loop-conventions.yml
- type: DataModel
  url: data-model/loop-data-model.yml
- type: Webhooks
  url: asyncapi/loop-webhooks.yml
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 20
  pass: local-v1

Loop API — frequently asked questions

Does Loop have an API?

Yes. APIs.io lists 14 APIs from Loop, including Loop Artifacts API, Loop Artifacts Schema Validated API and Loop Business Exceptions API, and 11 more.

Is there an OpenAPI specification for the Loop API?

Yes. APIs.io indexes 14 OpenAPI specifications for Loop, each linked for download from this page.

How do I authenticate with the Loop API?

Loop uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Loop Authentication.

Is the Loop API ready for AI agents?

Loop has a Kin Score of 46.3 out of 100 (developing) and an Agent Readiness score of 32.4 (agent-ready), scored by API Evangelist on 2026-11-06.

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