inboxpolicy-com

InboxPolicy provides a Send-Decision Email Verification API that helps applications determine whether to send an email to a given address. By calling a single endpoint, developers receive a decision (send, review, or avoid), confidence score, and reasoning, enabling cost‑effective email outreach and reducing bounce rates. The service is built for AI agents and integrates via REST and MCP, offering pay‑per‑call pricing and no free tier, with support for USDC payments.

inboxpolicy-com publishes 1 API contract indexed on the APIs.io network: Verification API. Tagged areas include Company, EmailVerification, API, AI, and Payments.

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

inboxpolicy-com’s developer surface includes pricing, documentation, authentication, and 15 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

44.6/100 developing Agent 30/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 4 Agent Skills

CompanyEmailVerificationAPIAIPayments Pricing

Kin Score

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

Composite quality — 44.6/100 · developing

Contract Quality 11.7 / 21

Developer Ergonomics 6.4 / 17

Access Clarity 10.7 / 17

Operational Transparency 0.0 / 11

Contract Governance 2.2 / 10

Discoverability 5.6 / 9

Regulatory Posture 4.4 / 15

Agent readiness — 30/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 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 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

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 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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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
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)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks

6 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
Developer Ergonomics scores 37.4 — up to +12.5 composite points
Contract Quality scores 55.2 — up to +11.2 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/inboxpolicy-com/apis.yml: open an issue on github.com/api-evangelist/inboxpolicy-com 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 1

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

inboxpolicy-com Verification API

The Verification API from inboxpolicy-com — 3 operation(s) for verification.

Agent Skills 4

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

inboxpolicy-com-agent

AGENT SKILL

batch-verify

AGENT SKILL

decide

AGENT SKILL

verify

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Inboxpolicy Com Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Inboxpolicy Com Rate Limits

0 limits

RATE LIMITS

Semantic Vocabularies 1

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

Inboxpolicy Com Context

40 classes · 72 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

inboxpolicy-com API Rules

14 rules · 12 errors 1 warnings 1 info

SPECTRAL

JSON Schema 6

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

CaptureSession

6 properties

JSON SCHEMA

Connector

9 properties

JSON SCHEMA

CreateRunRequest

7 properties

JSON SCHEMA

CreateSecretRequest

6 properties

JSON SCHEMA

File

8 properties

JSON SCHEMA

Run

13 properties

JSON SCHEMA

Security Posture 2

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

Inboxpolicy Com Authentication

apiKey · 1 scheme

SECURITY

Inboxpolicy Com Domain Security

TLSv1.3 · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Inboxpolicy Com Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Inboxpolicy Com Agentic Access

3 operations · 3 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Spectral

Vocabulary

ErrorCatalog

Conformance

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: inboxpolicy-com
name: inboxpolicy-com
image: https://inboxpolicy.com/og.png
description: InboxPolicy provides a Send-Decision Email Verification API that helps applications determine whether to send
  an email to a given address. By calling a single endpoint, developers receive a decision (send, review, or avoid), confidence
  score, and reasoning, enabling cost‑effective email outreach and reducing bounce rates. The service is built for AI agents
  and integrates via REST and MCP, offering pay‑per‑call pricing and no free tier, with support for USDC payments.
url: https://artifacts.apis.io/inboxpolicy-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-30 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- Company
- EmailVerification
- API
- AI
- Payments
- Pricing
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/inboxpolicy-com-agentic-access.yml
- type: Plans
  url: plans/inboxpolicy-com-plans-pricing.yml
- type: Spectral
  url: rules/inboxpolicy-com-rules.yml
- type: Vocabulary
  url: vocabulary/inboxpolicy-com-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: ErrorCatalog
  url: errors/inboxpolicy-com-problem-types.yml
- type: Conformance
  url: conformance/inboxpolicy-com-conformance.yml
- type: LLMsTxt
  url: llms/inboxpolicy-com-llms.txt
- type: Hosts
  url: hosts/inboxpolicy-com-hosts.yml
- type: Vendors
  url: vendors/inboxpolicy-com-vendors.yml
- type: TermsOfService
  url: https://inboxpolicy.com/terms
- type: PrivacyPolicy
  url: https://inboxpolicy.com/privacy
- type: Pricing
  url: https://inboxpolicy.com/pricing
- type: Documentation
  url: https://inboxpolicy.com/docs
- type: DeveloperPortal
  url: https://api.inboxpolicy.com</code
- type: Authentication
  url: authentication/inboxpolicy-com-authentication.yml
- type: DomainSecurity
  url: security/inboxpolicy-com-domain-security.yml
- type: Website
  url: https://inboxpolicy.com/
apis:
- aid: inboxpolicy-com:inboxpolicy-com-verification-api
  name: inboxpolicy-com Verification API
  description: The Verification API from inboxpolicy-com — 3 operation(s) for verification.
  humanURL: https://inboxpolicy.com/docs
  baseURL: https://api.inboxpolicy.com
  tags:
  - Verification
  properties:
  - type: OpenAPI
    url: openapi/inboxpolicy-com-verification-api-openapi.yml
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 22
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

inboxpolicy-com API — frequently asked questions

Does inboxpolicy-com have an API?

Yes. APIs.io lists 1 API from inboxpolicy-com, including inboxpolicy-com Verification API.

Is there an OpenAPI specification for the inboxpolicy-com API?

Yes. APIs.io indexes 1 OpenAPI specification for inboxpolicy-com, each linked for download from this page.

How do I authenticate with the inboxpolicy-com API?

inboxpolicy-com uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Inboxpolicy Com Authentication.

How much does the inboxpolicy-com API cost?

APIs.io lists 4 pricing plans for inboxpolicy-com, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the inboxpolicy-com API ready for AI agents?

inboxpolicy-com has a Kin Score of 44.6 out of 100 (developing) and an Agent Readiness score of 30.3 (agent-ready), scored by API Evangelist on 2026-10-31.

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