sendar-app

Sendar App provides a platform for managing and automating delivery logistics, offering APIs that enable businesses to integrate shipment tracking, route optimization, and real-time notifications into their applications. The service focuses on scalability, security, and ease of use, supporting multiple transport providers and providing comprehensive documentation for developers. By leveraging modern cloud infrastructure, Sendar App ensures high availability and performance for enterprise and SMB customers alike.

sendar-app publishes 4 API contracts indexed on the APIs.io network, including Emails API, Headless API, Inboxes API, and 1 more. Tagged areas include Company, Logistics, Delivery, API, and Automation.

The sendar-app catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

sendar-app’s developer surface includes signup flow, authentication, documentation, API reference, getting-started guide, pricing, engineering blog, and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

56.5/100 strong Agent 55/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

2 published contracts 1 Agent Skills

Company Logistics DeliveryAPIAutomation

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 56.5/100 · strong

Contract Quality 12.6 / 21

Developer Ergonomics 8.4 / 17

Access Clarity 12.4 / 17

Operational Transparency 0.0 / 11

Contract Governance 8.1 / 10

Discoverability 5.3 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 55/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 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 0 / 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 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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):

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)
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's
Dry-Run / Simulate Mode +4 pts — OpenAPI: destructive operations expose a dry_run / simulate / preview / validate_only parameter

2 more unmet checks in the Agent Readiness table above.

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

Operational Transparency scores 0.0 — up to +13.0 composite points
Contract Quality scores 59.2 — up to +10.2 composite points
Developer Ergonomics scores 49.3 — up to +10.1 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/sendar-app/apis.yml: open an issue on github.com/api-evangelist/sendar-app 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 →

APIs 4

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

sendar-app Emails API

The emails API from sendar-app — 4 operation(s) for emails.

sendar-app Headless API

The Headless API from sendar-app — 1 operation(s) for headless.

sendar-app Inboxes API

The Inboxes API from sendar-app — 8 operation(s) for inboxes.

sendar-app Link Checks API

The Link Checks API from sendar-app — 3 operation(s) for link checks.

Agent Skills 1

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

sendar-app-send-email-with-status

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Sendar App Plans Pricing

5 plans

PLANS

Semantic Vocabularies 1

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

Sendar App Context

6 classes · 30 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

sendar-app API Rules

15 rules · 13 errors 1 warnings 1 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

BatchEmailItem

9 properties

JSON SCHEMA

BatchSendResponse

1 properties

JSON SCHEMA

EmailDetail

0 properties

JSON SCHEMA

EmailEvent

4 properties

JSON SCHEMA

EmailInput

11 properties

JSON SCHEMA

EmailLog

16 properties

JSON SCHEMA

Security Posture 2

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

Sendar App Authentication

http · 1 scheme

SECURITY

Sendar App Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

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

Sendar App Agentic Access

19 operations · 8 acting · 2 human-in-the-loop

19 operations · 8 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

GettingStarted

GettingStarted

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

AgentSkill

LLMsTxt

WellKnown

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Idempotency

Conventions

ErrorCatalog

Conformance

Scroll for all 8

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: sendar-app
name: sendar-app
description: Sendar App provides a platform for managing and automating delivery logistics, offering APIs that enable businesses
  to integrate shipment tracking, route optimization, and real-time notifications into their applications. The service focuses
  on scalability, security, and ease of use, supporting multiple transport providers and providing comprehensive documentation
  for developers. By leveraging modern cloud infrastructure, Sendar App ensures high availability and performance for enterprise
  and SMB customers alike.
url: https://artifacts.apis.io/sendar-app/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-31 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-31'
modified: '2026-10-31'
tags:
- Company
- Logistics
- Delivery
- API
- Automation
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/sendar-app-agentic-access.yml
- type: Plans
  url: plans/sendar-app-plans-pricing.yml
- type: Spectral
  url: rules/sendar-app-rules.yml
- type: JSONLD
  url: json-ld/sendar-app-context.jsonld
- type: Vocabulary
  url: vocabulary/sendar-app-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/sendar-app-data-model.yml
- type: Idempotency
  url: conventions/sendar-app-conventions.yml
- type: Conventions
  url: conventions/sendar-app-conventions.yml
- type: ErrorCatalog
  url: errors/sendar-app-problem-types.yml
- type: Conformance
  url: conformance/sendar-app-conformance.yml
- type: LLMsTxt
  url: llms/sendar-app-llms.txt
- type: WellKnown
  url: well-known/sendar-app-well-known.yml
- type: Hosts
  url: hosts/sendar-app-hosts.yml
- type: SignUp
  url: https://sendar.app/sign-up
- type: Authentication
  url: authentication/sendar-app-authentication.yml
- type: DomainSecurity
  url: security/sendar-app-domain-security.yml
- type: Website
  url: https://sendar.app/
- type: Documentation
  url: https://sendar.app/docs
- type: APIReference
  url: https://sendar.app/docs
- type: GettingStarted
  url: https://sendar.app/docs
- type: Pricing
  url: https://sendar.app/pricing
- type: TermsOfService
  url: https://sendar.app/terms
- type: PrivacyPolicy
  url: https://sendar.app/privacy
- type: Blog
  url: https://sendar.app/blog
apis:
- aid: sendar-app:sendar-app-emails-api
  name: sendar-app Emails API
  description: The emails API from sendar-app — 4 operation(s) for emails.
  humanURL: https://sendar.app/docs
  baseURL: https://sendar.app/api
  tags:
  - emails
  properties:
  - type: OpenAPI
    url: openapi/sendar-app-emails-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendar-app-email-input-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-batch-email-item-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-email-log-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-email-event-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-email-detail-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-batch-send-response-schema.json
- aid: sendar-app:sendar-app-headless-api
  name: sendar-app Headless API
  description: The Headless API from sendar-app — 1 operation(s) for headless.
  humanURL: https://sendar.app/docs
  baseURL: https://sendar.app/api
  tags:
  - Headless
  properties:
  - type: OpenAPI
    url: openapi/sendar-app-headless-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendar-app-email-input-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-batch-email-item-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-email-log-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-email-event-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-email-detail-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-batch-send-response-schema.json
- aid: sendar-app:sendar-app-inboxes-api
  name: sendar-app Inboxes API
  description: The Inboxes API from sendar-app — 8 operation(s) for inboxes.
  humanURL: https://sendar.app/docs
  baseURL: https://sendar.app/api
  tags:
  - Inboxes
  properties:
  - type: OpenAPI
    url: openapi/sendar-app-inboxes-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendar-app-email-input-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-batch-email-item-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-email-log-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-email-event-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-email-detail-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-batch-send-response-schema.json
- aid: sendar-app:sendar-app-link-checks-api
  name: sendar-app Link Checks API
  description: The Link Checks API from sendar-app — 3 operation(s) for link checks.
  humanURL: https://sendar.app/docs
  baseURL: https://sendar.app/api
  tags:
  - Link Checks
  properties:
  - type: OpenAPI
    url: openapi/sendar-app-link-checks-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendar-app-email-input-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-batch-email-item-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-email-log-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-email-event-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-email-detail-schema.json
  - type: JSONSchema
    url: json-schema/sendar-app-batch-send-response-schema.json
x-coverage:
  state: gated
  reason: partner-login
  method: derived
  generated: '2026-10-31'
  generator: derive-coverage.py (pre-flight evidence)
  detail: the company serves an API surface but requires credentials before any description of it can be read
  evidence:
  - url: https://sendar.app/openapi.json
    status: null
  - url: https://sendar.app/api/mcp
    status: 401
  - url: https://sendar.app/
    status: 200
x-enrichment:
  date: '2026-10-31'
  status: enriched
  artifacts_added: 25
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

sendar-app API — frequently asked questions

Does sendar-app have an API?

Yes. APIs.io lists 4 APIs from sendar-app, including sendar-app Emails API, sendar-app Headless API and sendar-app Inboxes API, and 1 more.

Is there an OpenAPI specification for the sendar-app API?

Yes. APIs.io indexes 4 OpenAPI specifications for sendar-app, each linked for download from this page.

How do I authenticate with the sendar-app API?

sendar-app documents its authentication (http · 1 scheme). The details are profiled on APIs.io as Sendar App Authentication.

How much does the sendar-app API cost?

APIs.io lists 5 pricing plans for sendar-app, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the sendar-app API ready for AI agents?

sendar-app has a Kin Score of 56.5 out of 100 (strong) and an Agent Readiness score of 55.0 (agent-ready), scored by API Evangelist on 2026-10-31.

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