Sendlane

Email and SMS marketing platform built for e-commerce brands, unifying email, SMS, reviews and forms in one account. The Sendlane v2 REST API manages contacts, lists, segments, tags, custom fields, sender profiles, suppression lists and email and SMS consent, returns campaign and SMS performance and revenue reporting, and ingests e-commerce behaviour events such as product views, cart abandonment and orders placed to drive automations and revenue attribution.

Sendlane publishes 14 API contracts indexed on the APIs.io network, including Automations API, Campaigns API, Contacts API, and 11 more. Tagged areas include Email Marketing, SMS Marketing, E-Commerce, Marketing Automation, and Contacts.

The Sendlane catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.

Sendlane’s developer surface includes authentication, documentation, engineering blog, pricing, sandbox, changelog, getting-started guide, and 32 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

64.0/100 strong ▬ flat Agent 29/100 agent ready Front door AI 3/6 light Heartbeat 0/100 dormant saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

2 published contracts 4 Agent Skills

Email Marketing SMS Marketing E-Commerce Marketing Automation Contacts Campaigns Segmentation Consent Management Suppression Event TrackingRevenue Attribution

What this lets a business do 2

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

Customer Relationship Management

BC-420

ContactsSegments

GET /segments/{segmentId}/contacts GET /segments GET /segments/{segmentId} GET /contacts

Marketing Management

BC-400

CampaignsSMS

GET /sms-messages GET /sms-messages/{messageId} GET /sms-messages/{messageId}/report GET /campaigns

Kin Score

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

Composite quality — 64.0/100 · strong

Contract Quality 11.5 / 19

Developer Ergonomics 10.6 / 15

Access Clarity 12.6 / 15

Operational Transparency 6.2 / 10

Contract Governance 1.6 / 9

Discoverability 5.0 / 8

Regulatory Posture 3.7 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 29/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 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

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 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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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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
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
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)

6 more unmet checks in the Agent Readiness table above.

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

Contract Governance scores 18.2 — up to +9.8 composite points
Contract Quality scores 61.1 — up to +9.7 composite points
Developer Ergonomics scores 70.8 — up to +5.8 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/sendlane/apis.yml: open an issue on github.com/api-evangelist/sendlane 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
MACH & Headless Commerce	builds-on	17.1	-	-
Official SDKs on Packagist, pub.dev and Hex	builds-on	17.1	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

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.

Sendlane Automations API

The Automations API from Sendlane — 1 operation(s) for automations.

Sendlane Campaigns API

The Campaigns API from Sendlane — 3 operation(s) for campaigns.

Sendlane Contacts API

The Contacts API from Sendlane — 18 operation(s) for contacts.

Sendlane Custom Fields API

The Custom Fields API from Sendlane — 2 operation(s) for custom fields.

Sendlane Custom Integration Events API

The Custom Integration Events API from Sendlane — 2 operation(s) for custom integration events.

Sendlane Custom Integration Webhooks API

The Custom Integration Webhooks API from Sendlane — 9 operation(s) for custom integration webhooks.

Sendlane Custom Integrations API

The Custom Integrations API from Sendlane — 2 operation(s) for custom integrations.

Sendlane List Contacts API

The List Contacts API from Sendlane — 2 operation(s) for list contacts.

Sendlane Lists API

The Lists API from Sendlane — 3 operation(s) for lists.

Sendlane Segments API

The Segments API from Sendlane — 3 operation(s) for segments.

Sendlane Senders API

The Senders API from Sendlane — 2 operation(s) for senders.

Sendlane SMS API

The SMS API from Sendlane — 3 operation(s) for sms.

Sendlane Suppression API

The Suppression API from Sendlane — 3 operation(s) for suppression.

Sendlane Tags API

The Tags API from Sendlane — 3 operation(s) for tags.

Scroll for all 14

Open Collections 1

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

Api Reference

OPEN COLLECTION

Agent Skills 4

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

sendlane-manage-consent-and-suppression

AGENT SKILL

sendlane-onboard-contacts

AGENT SKILL

sendlane-pull-campaign-performance

AGENT SKILL

sendlane-track-ecommerce-events

AGENT SKILL

Sendlane API pricing

Prices published by Sendlane, read 2026-10-28 from www.sendlane.com/pricing.

Plan	Price
SMS Packages	SMS available starting at $0.009 per credit inclusive of carrier fees
SMS Credits 250	$6.25
SMS Credits 500	$11
SMS Credits 1,000	$21
SMS Credits 2,500	$50
SMS Credits 5,000	$90
SMS Credits 10,000	$175
SMS Monthly Activation	Monthly Activation: $10

All 9 plans, limits and sources →

Billed by: sms credit · FinOps profile →

Pricing Plans 2

Published pricing tiers and plan structures.

Sendlane Plans Pricing

9 plans

PLANS

Sendlane Price Estimates

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Sendlane Rate Limits

1 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Sendlane

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Sendlane Finops

FINOPS

Event Specifications 1

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

Sendlane Webhooks

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Sendlane Context

4 classes · 14 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Sendlane API Rules

57 rules · 50 errors 6 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.

Sendlane Openapi Overlay

10 actions · update · sendlane-openapi.yml

DERIVED

Security Posture 2

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

Sendlane Authentication

apiKey · 2 schemes

SECURITY

Sendlane Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Get Started 5

Portal, sign-up, and the first successful call

Sandbox

DeveloperPortal

GettingStarted

SignUp

Login

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

DataModel

Lifecycle

Conformance

Webhooks

Components

JSONLDContext

Scroll for all 8

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

Packages

Packages

GitHubOrganization

GitHubOrganization

PostmanWorkspace

PostmanWorkspace

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 5

Status, limits, changes, and where to get help

StatusPage

RateLimits

ChangeLog

Support

HelpCenter

Commercial 5

Pricing, plans, and the legal terms of use

Pricing

Plans

FinOps

TermsOfService

PrivacyPolicy

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 3

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

aid: sendlane
name: Sendlane
description: Email and SMS marketing platform built for e-commerce brands, unifying email, SMS, reviews and forms in one account.
  The Sendlane v2 REST API manages contacts, lists, segments, tags, custom fields, sender profiles, suppression lists and
  email and SMS consent, returns campaign and SMS performance and revenue reporting, and ingests e-commerce behaviour events
  such as product views, cart abandonment and orders placed to drive automations and revenue attribution.
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: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  source:
  - plans
  - authentication
  - rate-limits
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/sendlane.png
url: https://raw.githubusercontent.com/api-evangelist/sendlane/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-08-13'
specificationVersion: '0.23'
x-docs-platform: stoplight
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-04
tags:
- Email Marketing
- SMS Marketing
- E-Commerce
- Marketing Automation
- Contacts
- Campaigns
- Segmentation
- Consent Management
- Suppression
- Event Tracking
- Revenue Attribution
apis:
- aid: sendlane:sendlane-automations-api
  name: Sendlane Automations API
  description: The Automations API from Sendlane — 1 operation(s) for automations.
  humanURL: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  baseURL: https://api.sendlane.com/v2
  tags:
  - Automation
  tags_raw:
  - Automations
  properties:
  - type: OpenAPI
    url: openapi/sendlane-automations-api-openapi.yml
  - type: Documentation
    url: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  - type: APIReference
    url: https://sendlane.stoplight.io/docs/api-documentation/267c762bd945b-api-reference
  - type: PostmanCollection
    url: https://www.postman.com/sendlane/sendlane-s-public-workspace/documentation/xl7jbbs/sendlane-api
  - type: RateLimits
    url: https://sendlane.stoplight.io/docs/api-documentation/80256ed7dae2a-rate-limits
  - type: Authentication
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY2OQ-authentication
  - type: ErrorCodes
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjQwMjk2NTQ-responses
  - type: Pagination
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY3MA-pagination
- aid: sendlane:sendlane-campaigns-api
  name: Sendlane Campaigns API
  description: The Campaigns API from Sendlane — 3 operation(s) for campaigns.
  humanURL: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  baseURL: https://api.sendlane.com/v2
  tags:
  - Campaigns
  properties:
  - type: OpenAPI
    url: openapi/sendlane-campaigns-api-openapi.yml
  - type: Documentation
    url: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  - type: APIReference
    url: https://sendlane.stoplight.io/docs/api-documentation/267c762bd945b-api-reference
  - type: PostmanCollection
    url: https://www.postman.com/sendlane/sendlane-s-public-workspace/documentation/xl7jbbs/sendlane-api
  - type: RateLimits
    url: https://sendlane.stoplight.io/docs/api-documentation/80256ed7dae2a-rate-limits
  - type: Authentication
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY2OQ-authentication
  - type: ErrorCodes
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjQwMjk2NTQ-responses
  - type: Pagination
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY3MA-pagination
- aid: sendlane:sendlane-contacts-api
  name: Sendlane Contacts API
  description: The Contacts API from Sendlane — 18 operation(s) for contacts.
  humanURL: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  baseURL: https://api.sendlane.com/v2
  tags:
  - Contacts
  properties:
  - type: OpenAPI
    url: openapi/sendlane-contacts-api-openapi.yml
  - type: Documentation
    url: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  - type: APIReference
    url: https://sendlane.stoplight.io/docs/api-documentation/267c762bd945b-api-reference
  - type: PostmanCollection
    url: https://www.postman.com/sendlane/sendlane-s-public-workspace/documentation/xl7jbbs/sendlane-api
  - type: RateLimits
    url: https://sendlane.stoplight.io/docs/api-documentation/80256ed7dae2a-rate-limits
  - type: Authentication
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY2OQ-authentication
  - type: ErrorCodes
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjQwMjk2NTQ-responses
  - type: Pagination
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY3MA-pagination
- aid: sendlane:sendlane-custom-fields-api
  name: Sendlane Custom Fields API
  description: The Custom Fields API from Sendlane — 2 operation(s) for custom fields.
  humanURL: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  baseURL: https://api.sendlane.com/v2
  tags:
  - Custom Fields
  properties:
  - type: OpenAPI
    url: openapi/sendlane-custom-fields-api-openapi.yml
  - type: Documentation
    url: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  - type: APIReference
    url: https://sendlane.stoplight.io/docs/api-documentation/267c762bd945b-api-reference
  - type: PostmanCollection
    url: https://www.postman.com/sendlane/sendlane-s-public-workspace/documentation/xl7jbbs/sendlane-api
  - type: RateLimits
    url: https://sendlane.stoplight.io/docs/api-documentation/80256ed7dae2a-rate-limits
  - type: Authentication
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY2OQ-authentication
  - type: ErrorCodes
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjQwMjk2NTQ-responses
  - type: Pagination
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY3MA-pagination
- aid: sendlane:sendlane-custom-integration-events-api
  name: Sendlane Custom Integration Events API
  description: The Custom Integration Events API from Sendlane — 2 operation(s) for custom integration events.
  humanURL: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  baseURL: https://api.sendlane.com/v2
  tags:
  - Custom Integration Events
  properties:
  - type: OpenAPI
    url: openapi/sendlane-custom-integration-events-api-openapi.yml
  - type: Documentation
    url: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  - type: APIReference
    url: https://sendlane.stoplight.io/docs/api-documentation/267c762bd945b-api-reference
  - type: PostmanCollection
    url: https://www.postman.com/sendlane/sendlane-s-public-workspace/documentation/xl7jbbs/sendlane-api
  - type: RateLimits
    url: https://sendlane.stoplight.io/docs/api-documentation/80256ed7dae2a-rate-limits
  - type: Authentication
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY2OQ-authentication
  - type: ErrorCodes
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjQwMjk2NTQ-responses
  - type: Pagination
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY3MA-pagination
- aid: sendlane:sendlane-custom-integration-webhooks-api
  name: Sendlane Custom Integration Webhooks API
  description: The Custom Integration Webhooks API from Sendlane — 9 operation(s) for custom integration webhooks.
  humanURL: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  baseURL: https://api.sendlane.com/v2
  tags:
  - Custom Integration Webhooks
  properties:
  - type: OpenAPI
    url: openapi/sendlane-custom-integration-webhooks-api-openapi.yml
  - type: Documentation
    url: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  - type: APIReference
    url: https://sendlane.stoplight.io/docs/api-documentation/267c762bd945b-api-reference
  - type: PostmanCollection
    url: https://www.postman.com/sendlane/sendlane-s-public-workspace/documentation/xl7jbbs/sendlane-api
  - type: RateLimits
    url: https://sendlane.stoplight.io/docs/api-documentation/80256ed7dae2a-rate-limits
  - type: Authentication
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY2OQ-authentication
  - type: ErrorCodes
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjQwMjk2NTQ-responses
  - type: Pagination
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY3MA-pagination
- aid: sendlane:sendlane-custom-integrations-api
  name: Sendlane Custom Integrations API
  description: The Custom Integrations API from Sendlane — 2 operation(s) for custom integrations.
  humanURL: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  baseURL: https://api.sendlane.com/v2
  tags:
  - Custom Integrations
  properties:
  - type: OpenAPI
    url: openapi/sendlane-custom-integrations-api-openapi.yml
  - type: Documentation
    url: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  - type: APIReference
    url: https://sendlane.stoplight.io/docs/api-documentation/267c762bd945b-api-reference
  - type: PostmanCollection
    url: https://www.postman.com/sendlane/sendlane-s-public-workspace/documentation/xl7jbbs/sendlane-api
  - type: RateLimits
    url: https://sendlane.stoplight.io/docs/api-documentation/80256ed7dae2a-rate-limits
  - type: Authentication
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY2OQ-authentication
  - type: ErrorCodes
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjQwMjk2NTQ-responses
  - type: Pagination
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY3MA-pagination
- aid: sendlane:sendlane-list-contacts-api
  name: Sendlane List Contacts API
  description: The List Contacts API from Sendlane — 2 operation(s) for list contacts.
  humanURL: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  baseURL: https://api.sendlane.com/v2
  tags:
  - List Contacts
  properties:
  - type: OpenAPI
    url: openapi/sendlane-list-contacts-api-openapi.yml
  - type: Documentation
    url: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  - type: APIReference
    url: https://sendlane.stoplight.io/docs/api-documentation/267c762bd945b-api-reference
  - type: PostmanCollection
    url: https://www.postman.com/sendlane/sendlane-s-public-workspace/documentation/xl7jbbs/sendlane-api
  - type: RateLimits
    url: https://sendlane.stoplight.io/docs/api-documentation/80256ed7dae2a-rate-limits
  - type: Authentication
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY2OQ-authentication
  - type: ErrorCodes
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjQwMjk2NTQ-responses
  - type: Pagination
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY3MA-pagination
- aid: sendlane:sendlane-lists-api
  name: Sendlane Lists API
  description: The Lists API from Sendlane — 3 operation(s) for lists.
  humanURL: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  baseURL: https://api.sendlane.com/v2
  tags:
  - List
  tags_raw:
  - Lists
  properties:
  - type: OpenAPI
    url: openapi/sendlane-lists-api-openapi.yml
  - type: Documentation
    url: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  - type: APIReference
    url: https://sendlane.stoplight.io/docs/api-documentation/267c762bd945b-api-reference
  - type: PostmanCollection
    url: https://www.postman.com/sendlane/sendlane-s-public-workspace/documentation/xl7jbbs/sendlane-api
  - type: RateLimits
    url: https://sendlane.stoplight.io/docs/api-documentation/80256ed7dae2a-rate-limits
  - type: Authentication
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY2OQ-authentication
  - type: ErrorCodes
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjQwMjk2NTQ-responses
  - type: Pagination
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY3MA-pagination
- aid: sendlane:sendlane-segments-api
  name: Sendlane Segments API
  description: The Segments API from Sendlane — 3 operation(s) for segments.
  humanURL: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  baseURL: https://api.sendlane.com/v2
  tags:
  - Segments
  properties:
  - type: OpenAPI
    url: openapi/sendlane-segments-api-openapi.yml
  - type: Documentation
    url: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  - type: APIReference
    url: https://sendlane.stoplight.io/docs/api-documentation/267c762bd945b-api-reference
  - type: PostmanCollection
    url: https://www.postman.com/sendlane/sendlane-s-public-workspace/documentation/xl7jbbs/sendlane-api
  - type: RateLimits
    url: https://sendlane.stoplight.io/docs/api-documentation/80256ed7dae2a-rate-limits
  - type: Authentication
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY2OQ-authentication
  - type: ErrorCodes
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjQwMjk2NTQ-responses
  - type: Pagination
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY3MA-pagination
- aid: sendlane:sendlane-senders-api
  name: Sendlane Senders API
  description: The Senders API from Sendlane — 2 operation(s) for senders.
  humanURL: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  baseURL: https://api.sendlane.com/v2
  tags:
  - Senders
  properties:
  - type: OpenAPI
    url: openapi/sendlane-senders-api-openapi.yml
  - type: Documentation
    url: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  - type: APIReference
    url: https://sendlane.stoplight.io/docs/api-documentation/267c762bd945b-api-reference
  - type: PostmanCollection
    url: https://www.postman.com/sendlane/sendlane-s-public-workspace/documentation/xl7jbbs/sendlane-api
  - type: RateLimits
    url: https://sendlane.stoplight.io/docs/api-documentation/80256ed7dae2a-rate-limits
  - type: Authentication
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY2OQ-authentication
  - type: ErrorCodes
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjQwMjk2NTQ-responses
  - type: Pagination
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY3MA-pagination
- aid: sendlane:sendlane-sms-api
  name: Sendlane SMS API
  description: The SMS API from Sendlane — 3 operation(s) for sms.
  humanURL: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  baseURL: https://api.sendlane.com/v2
  tags:
  - SMS
  properties:
  - type: OpenAPI
    url: openapi/sendlane-sms-api-openapi.yml
  - type: Documentation
    url: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  - type: APIReference
    url: https://sendlane.stoplight.io/docs/api-documentation/267c762bd945b-api-reference
  - type: PostmanCollection
    url: https://www.postman.com/sendlane/sendlane-s-public-workspace/documentation/xl7jbbs/sendlane-api
  - type: RateLimits
    url: https://sendlane.stoplight.io/docs/api-documentation/80256ed7dae2a-rate-limits
  - type: Authentication
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY2OQ-authentication
  - type: ErrorCodes
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjQwMjk2NTQ-responses
  - type: Pagination
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY3MA-pagination
- aid: sendlane:sendlane-suppression-api
  name: Sendlane Suppression API
  description: The Suppression API from Sendlane — 3 operation(s) for suppression.
  humanURL: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  baseURL: https://api.sendlane.com/v2
  tags:
  - Suppression
  properties:
  - type: OpenAPI
    url: openapi/sendlane-suppression-api-openapi.yml
  - type: Documentation
    url: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  - type: APIReference
    url: https://sendlane.stoplight.io/docs/api-documentation/267c762bd945b-api-reference
  - type: PostmanCollection
    url: https://www.postman.com/sendlane/sendlane-s-public-workspace/documentation/xl7jbbs/sendlane-api
  - type: RateLimits
    url: https://sendlane.stoplight.io/docs/api-documentation/80256ed7dae2a-rate-limits
  - type: Authentication
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY2OQ-authentication
  - type: ErrorCodes
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjQwMjk2NTQ-responses
  - type: Pagination
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY3MA-pagination
- aid: sendlane:sendlane-tags-api
  name: Sendlane Tags API
  description: The Tags API from Sendlane — 3 operation(s) for tags.
  humanURL: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  baseURL: https://api.sendlane.com/v2
  tags:
  - Tags
  properties:
  - type: OpenAPI
    url: openapi/sendlane-tags-api-openapi.yml
  - type: Documentation
    url: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
  - type: APIReference
    url: https://sendlane.stoplight.io/docs/api-documentation/267c762bd945b-api-reference
  - type: PostmanCollection
    url: https://www.postman.com/sendlane/sendlane-s-public-workspace/documentation/xl7jbbs/sendlane-api
  - type: RateLimits
    url: https://sendlane.stoplight.io/docs/api-documentation/80256ed7dae2a-rate-limits
  - type: Authentication
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY2OQ-authentication
  - type: ErrorCodes
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjQwMjk2NTQ-responses
  - type: Pagination
    url: https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY3MA-pagination
common:
- type: CapabilityMap
  url: capabilities/sendlane-capability-edges.yml
  name: Sendlane Business Capability Map
- type: Overlay
  url: overlays/sendlane-openapi-overlay.yaml
- type: Authentication
  url: authentication/sendlane-authentication.yml
- type: DomainSecurity
  url: security/sendlane-domain-security.yml
- type: Website
  url: https://www.sendlane.com/
- type: Documentation
  url: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
- type: GitHubOrg
  url: https://github.com/sendlane
- type: LinkedIn
  url: https://www.linkedin.com/company/sendlane/
- type: Blog
  url: https://www.sendlane.com/blog
- type: Pricing
  url: https://www.sendlane.com/pricing
- type: StatusPage
  url: https://status.sendlane.com/
- type: X
  url: https://twitter.com/sendlane
- type: Plans
  url: plans/sendlane-plans-pricing.yml
- type: RateLimits
  url: rate-limits/sendlane-rate-limits.yml
- type: FinOps
  url: finops/sendlane-finops.yml
- type: Conventions
  url: conventions/sendlane-conventions.yml
- type: ErrorCatalog
  url: errors/sendlane-problem-types.yml
- type: DataModel
  url: data-model/sendlane-data-model.yml
- type: Lifecycle
  url: lifecycle/sendlane-lifecycle.yml
- type: Conformance
  url: conformance/sendlane-conformance.yml
- type: Webhooks
  url: asyncapi/sendlane-webhooks.yml
- type: Sandbox
  url: sandbox/sendlane-sandbox.yml
- type: Components
  url: components/sendlane-components.yml
- type: ChangeLog
  url: changelog/sendlane-changelog.yml
- type: Packages
  url: packages/sendlane-packages.yml
- type: X-MCPServerCandidate
  url: mcp/sendlane-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/sendlane-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: JSONLDContext
  url: json-ld/sendlane-context.jsonld
- type: DeveloperPortal
  url: https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
- type: GettingStarted
  url: https://help.sendlane.com/articles/3807111349-sendlane-custom-integration-setup-api-v2
- type: Support
  url: https://www.sendlane.com/contact-us
- type: HelpCenter
  url: https://help.sendlane.com/
- type: GitHubOrganization
  url: https://github.com/sendlane
- type: PostmanWorkspace
  url: https://www.postman.com/sendlane/sendlane-s-public-workspace
- type: SignUp
  url: https://auth.sendlane.com/register
- type: Login
  url: https://auth.sendlane.com/login
- type: TermsOfService
  url: https://www.sendlane.com/terms
- type: PrivacyPolicy
  url: https://www.sendlane.com/privacy
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 22
  pass: local-v1

Sendlane API — frequently asked questions

Does Sendlane have an API?

Yes. APIs.io lists 14 APIs from Sendlane, including Sendlane Automations API, Sendlane Campaigns API and Sendlane Contacts API, and 11 more.

Is there an OpenAPI specification for the Sendlane API?

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

How do I authenticate with the Sendlane API?

Sendlane uses bearer-token authentication (apiKey · 2 schemes). The details are profiled on APIs.io as Sendlane Authentication.

How much does the Sendlane API cost?

Sendlane publishes its prices; its SMS Packages plan is SMS available starting at $0.009 per credit inclusive of carrier fees as of 2026-10-28. APIs.io lists 9 pricing plans for Sendlane, with each plan's price, limits and inclusions under Pricing on this page.

Is the Sendlane API ready for AI agents?

Sendlane has a Kin Score of 64.0 out of 100 (strong) and an Agent Readiness score of 29.4 (agent-ready), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

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https://apis.io/mcp

Tools for providers

9 MCP tools reach this

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get_provider_artifactsEvery artifact this provider publishes, grouped by type.
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get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
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get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

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curl "https://apis.io/api/v1/providers/sendlane/evidence"

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