PostcardMania

PostcardMania provides direct mail advertising services, offering businesses the ability to design, print, and mail postcards, flyers, and other marketing materials at scale. Through its Direct Mail API, developers can automate postcard creation and mailing, integrating with CRM and marketing platforms. The company serves small to large enterprises across various industries, emphasizing cost‑effective, targeted outreach.

PostcardMania is profiled on the APIs.io network. Tagged areas include DirectMail, Marketing, API, Automation, and SmallBusiness.

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

PostcardMania’s developer surface includes documentation, API reference, engineering blog, pricing, support, and 11 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

25.8/100 emerging Agent 6/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

0 APIs

DirectMailMarketingAPIAutomationSmallBusiness

Kin Score

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

Composite quality — 25.8/100 · emerging

Contract Quality 1.8 / 21

Developer Ergonomics 5.7 / 17

Access Clarity 6.3 / 17

Operational Transparency 0.6 / 11

Contract Governance 1.6 / 10

Discoverability 4.3 / 9

Regulatory Posture 4.4 / 15

Agent readiness — 6/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 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 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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

11 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 8.3 — up to +22.9 composite points
Developer Ergonomics scores 33.3 — up to +13.3 composite points
Access Clarity scores 36.8 — up to +12.6 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/postcardmania/apis.yml: open an issue on github.com/api-evangelist/postcardmania 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 →

Pricing Plans 1

Published pricing tiers and plan structures.

Postcardmania Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Postcardmania Rate Limits

0 limits

RATE LIMITS

Semantic Vocabularies 1

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

Postcardmania Context

3 classes · 8 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

PostcardMania API Rules

13 rules · 12 errors 1 info

SPECTRAL

JSON Schema 3

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

GetListCountCarrierRouteResponse

3 properties

JSON SCHEMA

PostListCountRadiusRequest

4 properties

JSON SCHEMA

PostListCountZipcodeRequest

4 properties

JSON SCHEMA

Security Posture 3

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

Postcardmania Authentication

0 schemes

SECURITY

Postcardmania Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Postcardmania Trust Center

SOC 2, ISO 27001, PCI DSS, HIPAA, GDPR

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Postcardmania Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

Compliance

Compliance

TrustCenter

TrustCenter

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Pricing

Pricing

Company 3

The organization behind the API

Newsroom

Newsroom

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: postcardmania
name: PostcardMania
image: https://www.postcardmania.com/wp-content/themes/picostrap5pcm/assets/img/pcm-og-block.png
description: PostcardMania provides direct mail advertising services, offering businesses the ability to design, print, and
  mail postcards, flyers, and other marketing materials at scale. Through its Direct Mail API, developers can automate postcard
  creation and mailing, integrating with CRM and marketing platforms. The company serves small to large enterprises across
  various industries, emphasizing cost‑effective, targeted outreach.
url: https://raw.githubusercontent.com/api-evangelist/postcardmania/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-27 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-27'
modified: '2026-10-27'
tags:
- DirectMail
- Marketing
- API
- Automation
- SmallBusiness
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Compliance
  url: https://trust.postcardmania.com/
- type: LLMsTxt
  url: llms/postcardmania-llms.txt
- type: Hosts
  url: hosts/postcardmania-hosts.yml
- type: Vendors
  url: vendors/postcardmania-vendors.yml
- type: PrivacyPolicy
  url: https://www.postcardmania.com/privacy-policy/
- type: Newsroom
  url: https://www.postcardmania.com/news/
- type: GitHubOrganization
  url: https://github.com/postcardmania
- type: TrustCenter
  url: security/postcardmania-trust-center.yml
- type: DomainSecurity
  url: security/postcardmania-domain-security.yml
- type: Website
  url: https://postcardmania.com/
- type: DeveloperPortal
  url: https://www.pcmintegrations.com/
- type: Documentation
  url: https://www.pcmintegrations.com/direct-mail-api/
- type: APIReference
  url: https://www.pcmintegrations.com/direct-mail-api/
- type: Blog
  url: https://www.postcardmania.com/blog/
- type: Pricing
  url: https://www.postcardmania.com/price/
- type: Support
  url: https://www.pcmintegrations.com/contact-us/
apis: []
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Provider documentation pages exist but no OpenAPI, AsyncAPI, GraphQL, or other machine‑readable contract was found.
  evidence:
  - url: https://api.pcmintegrations.com/openapi.json
    status: 404
  checked: '2026-10-27'
x-submission-probe: 403, 2026-10-26
x-enrichment:
  date: '2026-10-27'
  status: enriched
  artifacts_added: 12
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

PostcardMania API — frequently asked questions

How do I authenticate with the PostcardMania API?

PostcardMania documents its authentication (0 schemes). The details are profiled on APIs.io as Postcardmania Authentication.

Is the PostcardMania API ready for AI agents?

PostcardMania has a Kin Score of 25.8 out of 100 (emerging) and an Agent Readiness score of 5.6 (agent-aware), scored by API Evangelist on 2026-10-31.

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