PostalForm

PostalForm is an online print-and-mail service operated by MindBike Technologies LLC that turns PDFs, letters, filled government and consumer forms, dispute packets, postcards and CSV bulk campaigns into real postal mail for twelve countries, with address validation, Certified Mail and electronic return receipts. It is built agent-first: a remote MCP server at https://postalform.com/mcp (12 tools, no credential to connect) creates reviewable hosted-checkout drafts; a 17-operation Machine Payments API lets autonomous runtimes validate, pay for and track orders through x402 (USDC on Base) or Stripe's Machine Payments Protocol under an HTTP 402 challenge; an A2A 1.0 agent card, UCP and ACP checkout endpoints, an RFC 9727 api-catalog, an APIs.json index and an x402 manifest are served from /.well-known/. PostalForm Projects (25 operations) adds API-key workspaces with a free test mode, final-price quotes, Idempotency-Key orders, prepaid credits and signed webhooks.

PostalForm publishes 11 API contracts indexed on the APIs.io network, including Api Keys API, Credits API, Documents API, and 8 more. Tagged areas include Physical Mail, Print & Mail, Postal Mail, Certified Mail, and Documents.

The PostalForm catalog on APIs.io includes 1 event-driven AsyncAPI specification.

PostalForm’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 39 more developer resources.

🌐 Visit website 📡 Source on GitHub

58.8/100 strong ▬ flat Agent 60/100 agent native Front door AI 1/6 silent Full breakdown ↓
scored 2026-10-09 · rubric v0.23.0

3 published contracts 1 MCP Servers

Physical MailPrint & MailPostal MailCertified MailDocuments Agents Agentic Commerce MCP A2A x402 Machine Payments Webhook Agent-Native United States

What this lets a business do 2

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

Developer Platform & API Ecosystem Management

BC-4270

API KeysWebhook EndpointsWebhook Events

POST /api/v1/webhook-endpoints POST /api/v1/webhook-endpoints/{endpoint_id}/rotate-secret GET /api/v1/webhook-events POST /api/v1/webhook-events/{event_id}/replay

Subscription Billing & Revenue Management

BC-4250

Credits

GET /api/v1/credits/balance GET /api/v1/credits/payment-methods POST /api/v1/credits/checkout-session

Kin Score

Kin Score How this is scored →
scored 2026-10-09 · rubric v0.23.0

Composite quality — 58.8/100 · strong

Contract Quality 9.8 / 19

Developer Ergonomics 10.7 / 15

Access Clarity 11.4 / 15

Operational Transparency 4.4 / 10

Contract Governance 1.6 / 9

Discoverability 6.0 / 8

Regulatory Posture 3.9 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 60/100 · agent native

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 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 3 / 3

A2A Agent Card 8 / 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 5 / 5

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/.

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 github.com/api-evangelist/postalform-com: open an issue to ask a question, or submit a pull request to add artifacts. 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.

x402

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

APIs 11

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

PostalForm MCP Server

Remote Model Context Protocol server at https://postalform.com/mcp (Streamable HTTP, wire protocol 2025-06-18, serverInfo postalform 0.1.0). initialize, tools/list and resources...

PostalForm A2A Agent

Agent2Agent (A2A) surface: an agent card served from https://postalform.com/.well-known/agent-card.json (protocolVersion 1.0, JSONRPC binding, version 0.1.0, a2a-version: 1.0 re...

PostalForm Api Keys API

The Api Keys API from PostalForm — 2 operation(s) for api keys.

PostalForm Credits API

The Credits API from PostalForm — 6 operation(s) for credits.

PostalForm Documents API

The Documents API from PostalForm — 2 operation(s) for documents.

PostalForm Letters API

The Letters API from PostalForm — 5 operation(s) for letters.

PostalForm Machine API

The Machine API from PostalForm — 17 operation(s) for machine.

PostalForm Postcards API

The Postcards API from PostalForm — 4 operation(s) for postcards.

PostalForm Return Receipts API

The Return Receipts API from PostalForm — 1 operation(s) for return receipts.

PostalForm Webhook Endpoints API

The Webhook Endpoints API from PostalForm — 3 operation(s) for webhook endpoints.

PostalForm Webhook Events API

The Webhook Events API from PostalForm — 2 operation(s) for webhook events.

Scroll for all 11

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

PostalForm MCP Server

PostalForm operates ONE remote MCP server at https://postalform.com/mcp — the same host as its website, OpenAPI, A2A card and machine-payments REST API. It is Streamable HTTP (t...

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Postalform Com Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Postalform Com Rate Limits

0 limits

RATE LIMITS

Event Specifications 1

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

Postalform Com Projects Webhooks

ASYNCAPI

OpenAPI Overlays 2

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.

Postalform Com Machine Payments Overlay

24 actions · documentation · postalform-com-machine-payments-openapi.json

GENERATED

Postalform Com Projects Overlay

31 actions · documentation · postalform-com-projects-openapi.json

GENERATED

Security Posture 2

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

Postalform Com Authentication

http/none/payment-gated · 3 schemes

SECURITY

Postalform Com Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Postalform Com Agentic Access

44 operations · 24 acting · 1 human-in-the-loop

44 operations · 24 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

GettingStarted

Signup

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 6

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

MCPServer

WellKnown

AgentSkill

AgenticAccess

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

ErrorCatalog

Lifecycle

Conformance

DataModel

Webhooks

Scroll for all 7

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

ToolCrosswalk

ToolCrosswalk

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 6

Status, limits, changes, and where to get help

Support

HelpCenter

StatusPage

ChangeLog

ChangeLog

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

Company 3

The organization behind the API

Website

Website

Blog

Blog

BlogRSS

BlogRSS

Other 9

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Overlay

Overlay

AcceptableUsePolicy

APIsJson

AgentCard

APICatalog

ContentSignal

DataSubjectRequest

DataSubjectRequest

Scroll for all 9

Source (apis.yml)

aid: postalform-com
name: PostalForm
description: 'PostalForm is an online print-and-mail service operated by MindBike Technologies LLC that turns PDFs, letters,
  filled government and consumer forms, dispute packets, postcards and CSV bulk campaigns into real postal mail for twelve
  countries, with address validation, Certified Mail and electronic return receipts. It is built agent-first: a remote MCP
  server at https://postalform.com/mcp (12 tools, no credential to connect) creates reviewable hosted-checkout drafts; a 17-operation
  Machine Payments API lets autonomous runtimes validate, pay for and track orders through x402 (USDC on Base) or Stripe''s
  Machine Payments Protocol under an HTTP 402 challenge; an A2A 1.0 agent card, UCP and ACP checkout endpoints, an RFC 9727
  api-catalog, an APIs.json index and an x402 manifest are served from /.well-known/. PostalForm Projects (25 operations)
  adds API-key workspaces with a free test mode, final-price quotes, Idempotency-Key orders, prepaid credits and signed webhooks.'
url: https://raw.githubusercontent.com/api-evangelist/postalform-com/refs/heads/main/apis.yml
image: https://postalform.com/og/default.png
x-type: company
x-source: harvest:a2a-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-09-19 (local-v3; was a2a-registry harvest stub)
specificationVersion: '0.20'
created: '2026-09-19'
modified: '2026-09-19'
tags:
- Physical Mail
- Print & Mail
- Postal Mail
- Certified Mail
- Documents
- Agents
- Agentic Commerce
- MCP
- A2A
- x402
- Machine Payments
- Webhook
- Agent-Native
- United States
tags_raw:
- Physical mail
- Print and mail
- Postal mail
- Certified Mail
- Documents
- Agents
- Agent commerce
- MCP
- A2A
- x402
- Machine payments
- Webhooks
- Agent-native
- United States
- Print and Mail
- Agent Commerce
- agent-native
apis:
- aid: postalform-com:postalform-mcp-server
  name: PostalForm MCP Server
  description: 'Remote Model Context Protocol server at https://postalform.com/mcp (Streamable HTTP, wire protocol 2025-06-18,
    serverInfo postalform 0.1.0). initialize, tools/list and resources/list answer anonymously with 12 tools carrying real
    inputSchema, outputSchema and annotations: list_forms, get_form_schema, search_addresses, create_pdf_upload, create_order_draft,
    preview_letter_order_draft, create_letter_order_draft, create_form_order_draft, create_machine_order, complete_checkout,
    get_order_status and ping. Draft tools return a hosted checkout_url and an ACP checkout_session so a human approves before
    any mail is printed; create_machine_order answers MPP/x402 challenges for authorized autonomous runtimes. Discoverable
    via /.well-known/mcp.json, mcp/server.json (MCP Registry schema) and mcp/server-card.json; sibling UCP and ACP checkout
    MCP endpoints at /ucp/mcp and /acp/mcp.'
  humanURL: https://postalform.com/developers
  baseURL: https://postalform.com/mcp
  tags:
  - MCP
  - Agent-Native
  - Agentic Commerce
  - Physical Mail
  tags_raw:
  - MCP
  - agent-native
  - Agent Commerce
  - Physical Mail
  properties:
  - type: MCPServer
    url: mcp/postalform-com-mcp.yml
  - type: MCPServer
    name: PostalForm MCP endpoint (Streamable HTTP)
    url: https://postalform.com/mcp
  - type: ToolCrosswalk
    url: mcp/postalform-com-tool-crosswalk.yml
  - type: AgentSkill
    name: PostalForm agent skill (provider-published skill.md)
    url: https://postalform.com/skill.md
- aid: postalform-com:postalform-a2a-agent
  name: PostalForm A2A Agent
  description: 'Agent2Agent (A2A) surface: an agent card served from https://postalform.com/.well-known/agent-card.json (protocolVersion
    1.0, JSONRPC binding, version 0.1.0, a2a-version: 1.0 response header) advertising three guidance skills — connect an
    agent to PostalForm MCP, plan a reviewable mail draft, plan an authorized machine-paid order — with x402 and UCP discovery
    documents declared as capability extensions. The declared JSON-RPC endpoint https://postalform.com/a2a returns the card
    on GET and answers tasks/get with -32601 Method not found; the provider calls it a discovery bridge, and the executable
    surface is the MCP server the card points at.'
  humanURL: https://postalform.com/agents
  baseURL: https://postalform.com/a2a
  tags:
  - A2A
  - Agent-Native
  - Agents
  tags_raw:
  - A2A
  - agent-native
  - Agents
  properties:
  - type: AgentCard
    url: a2a/postalform-com-a2a.yml
  - type: AgentCard
    name: A2A Agent Card (provider-hosted)
    url: https://postalform.com/.well-known/agent-card.json
- aid: postalform-com:postalform-com-api-keys-api
  name: PostalForm Api Keys API
  description: The Api Keys API from PostalForm — 2 operation(s) for api keys.
  humanURL: https://postalform.com/developers
  baseURL: https://postalform.com/api/machine
  tags:
  - APIKeys
  tags_raw:
  - Api Keys
  properties:
  - type: OpenAPI
    url: openapi/postalform-com-api-keys-api-openapi.yml
  - type: Documentation
    url: https://postalform.com/developers
  - type: APIReference
    url: https://postalform.com/openapi.json
  - type: Documentation
    url: https://postalform.com/agents
  - type: Documentation
    url: https://projects.postalform.com/docs
  - type: APIReference
    url: https://projects.postalform.com/openapi.json
  - type: GettingStarted
    url: https://postalform.com/developer-mail-api
  - type: Webhooks
    url: asyncapi/postalform-com-projects-webhooks.yml
- aid: postalform-com:postalform-com-credits-api
  name: PostalForm Credits API
  description: The Credits API from PostalForm — 6 operation(s) for credits.
  humanURL: https://postalform.com/developers
  baseURL: https://postalform.com/api/machine
  tags:
  - Credit
  tags_raw:
  - Credits
  properties:
  - type: OpenAPI
    url: openapi/postalform-com-credits-api-openapi.yml
  - type: Documentation
    url: https://postalform.com/developers
  - type: APIReference
    url: https://postalform.com/openapi.json
  - type: Documentation
    url: https://postalform.com/agents
  - type: Documentation
    url: https://projects.postalform.com/docs
  - type: APIReference
    url: https://projects.postalform.com/openapi.json
  - type: GettingStarted
    url: https://postalform.com/developer-mail-api
  - type: Webhooks
    url: asyncapi/postalform-com-projects-webhooks.yml
- aid: postalform-com:postalform-com-documents-api
  name: PostalForm Documents API
  description: The Documents API from PostalForm — 2 operation(s) for documents.
  humanURL: https://postalform.com/developers
  baseURL: https://postalform.com/api/machine
  tags:
  - Documents
  properties:
  - type: OpenAPI
    url: openapi/postalform-com-documents-api-openapi.yml
  - type: Documentation
    url: https://postalform.com/developers
  - type: APIReference
    url: https://postalform.com/openapi.json
  - type: Documentation
    url: https://postalform.com/agents
  - type: Documentation
    url: https://projects.postalform.com/docs
  - type: APIReference
    url: https://projects.postalform.com/openapi.json
  - type: GettingStarted
    url: https://postalform.com/developer-mail-api
  - type: Webhooks
    url: asyncapi/postalform-com-projects-webhooks.yml
- aid: postalform-com:postalform-com-letters-api
  name: PostalForm Letters API
  description: The Letters API from PostalForm — 5 operation(s) for letters.
  humanURL: https://postalform.com/developers
  baseURL: https://postalform.com/api/machine
  tags:
  - Letters
  properties:
  - type: OpenAPI
    url: openapi/postalform-com-letters-api-openapi.yml
  - type: Documentation
    url: https://postalform.com/developers
  - type: APIReference
    url: https://postalform.com/openapi.json
  - type: Documentation
    url: https://postalform.com/agents
  - type: Documentation
    url: https://projects.postalform.com/docs
  - type: APIReference
    url: https://projects.postalform.com/openapi.json
  - type: GettingStarted
    url: https://postalform.com/developer-mail-api
  - type: Webhooks
    url: asyncapi/postalform-com-projects-webhooks.yml
- aid: postalform-com:postalform-com-machine-api
  name: PostalForm Machine API
  description: The Machine API from PostalForm — 17 operation(s) for machine.
  humanURL: https://postalform.com/developers
  baseURL: https://postalform.com/api/machine
  tags:
  - Machine
  properties:
  - type: OpenAPI
    url: openapi/postalform-com-machine-api-openapi.yml
  - type: Documentation
    url: https://postalform.com/developers
  - type: APIReference
    url: https://postalform.com/openapi.json
  - type: Documentation
    url: https://postalform.com/agents
  - type: Documentation
    url: https://projects.postalform.com/docs
  - type: APIReference
    url: https://projects.postalform.com/openapi.json
  - type: GettingStarted
    url: https://postalform.com/developer-mail-api
  - type: Webhooks
    url: asyncapi/postalform-com-projects-webhooks.yml
- aid: postalform-com:postalform-com-postcards-api
  name: PostalForm Postcards API
  description: The Postcards API from PostalForm — 4 operation(s) for postcards.
  humanURL: https://postalform.com/developers
  baseURL: https://postalform.com/api/machine
  tags:
  - Postcards
  properties:
  - type: OpenAPI
    url: openapi/postalform-com-postcards-api-openapi.yml
  - type: Documentation
    url: https://postalform.com/developers
  - type: APIReference
    url: https://postalform.com/openapi.json
  - type: Documentation
    url: https://postalform.com/agents
  - type: Documentation
    url: https://projects.postalform.com/docs
  - type: APIReference
    url: https://projects.postalform.com/openapi.json
  - type: GettingStarted
    url: https://postalform.com/developer-mail-api
  - type: Webhooks
    url: asyncapi/postalform-com-projects-webhooks.yml
- aid: postalform-com:postalform-com-return-receipts-api
  name: PostalForm Return Receipts API
  description: The Return Receipts API from PostalForm — 1 operation(s) for return receipts.
  humanURL: https://postalform.com/developers
  baseURL: https://postalform.com/api/machine
  tags:
  - Return Receipts
  properties:
  - type: OpenAPI
    url: openapi/postalform-com-return-receipts-api-openapi.yml
  - type: Documentation
    url: https://postalform.com/developers
  - type: APIReference
    url: https://postalform.com/openapi.json
  - type: Documentation
    url: https://postalform.com/agents
  - type: Documentation
    url: https://projects.postalform.com/docs
  - type: APIReference
    url: https://projects.postalform.com/openapi.json
  - type: GettingStarted
    url: https://postalform.com/developer-mail-api
  - type: Webhooks
    url: asyncapi/postalform-com-projects-webhooks.yml
- aid: postalform-com:postalform-com-webhook-endpoints-api
  name: PostalForm Webhook Endpoints API
  description: The Webhook Endpoints API from PostalForm — 3 operation(s) for webhook endpoints.
  humanURL: https://postalform.com/developers
  baseURL: https://postalform.com/api/machine
  tags:
  - Webhook Endpoints
  properties:
  - type: OpenAPI
    url: openapi/postalform-com-webhook-endpoints-api-openapi.yml
  - type: Documentation
    url: https://postalform.com/developers
  - type: APIReference
    url: https://postalform.com/openapi.json
  - type: Documentation
    url: https://postalform.com/agents
  - type: Documentation
    url: https://projects.postalform.com/docs
  - type: APIReference
    url: https://projects.postalform.com/openapi.json
  - type: GettingStarted
    url: https://postalform.com/developer-mail-api
  - type: Webhooks
    url: asyncapi/postalform-com-projects-webhooks.yml
- aid: postalform-com:postalform-com-webhook-events-api
  name: PostalForm Webhook Events API
  description: The Webhook Events API from PostalForm — 2 operation(s) for webhook events.
  humanURL: https://postalform.com/developers
  baseURL: https://postalform.com/api/machine
  tags:
  - Webhook Events
  properties:
  - type: OpenAPI
    url: openapi/postalform-com-webhook-events-api-openapi.yml
  - type: Documentation
    url: https://postalform.com/developers
  - type: APIReference
    url: https://postalform.com/openapi.json
  - type: Documentation
    url: https://postalform.com/agents
  - type: Documentation
    url: https://projects.postalform.com/docs
  - type: APIReference
    url: https://projects.postalform.com/openapi.json
  - type: GettingStarted
    url: https://postalform.com/developer-mail-api
  - type: Webhooks
    url: asyncapi/postalform-com-projects-webhooks.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: CapabilityMap
  url: capabilities/postalform-com-capability-edges.yml
  name: PostalForm Business Capability Map
- type: Overlay
  url: overlays/postalform-com-machine-payments-overlay.yaml
- type: Overlay
  url: overlays/postalform-com-projects-overlay.yaml
- type: Website
  url: https://postalform.com/
- type: DeveloperPortal
  url: https://projects.postalform.com/
- type: Documentation
  url: https://postalform.com/developers
- type: APIReference
  url: https://postalform.com/openapi.json
- type: GettingStarted
  url: https://postalform.com/developers/quickstart
- type: Support
  url: https://postalform.com/support
- type: HelpCenter
  url: https://postalform.com/help
- type: Blog
  url: https://blog.postalform.com/
- type: BlogRSS
  url: https://blog.postalform.com/rss.xml
- type: GitHubOrganization
  url: https://github.com/postalform
- type: Pricing
  url: https://postalform.com/pricing
- type: Signup
  url: https://projects.postalform.com/signup
- type: TermsOfService
  url: https://postalform.com/terms
- type: PrivacyPolicy
  url: https://postalform.com/privacy
- type: AcceptableUsePolicy
  url: https://postalform.com/acceptable-use
- type: StatusPage
  url: https://postalform.com/api/health
- type: ChangeLog
  url: changelog/postalform-com-changelog.yml
- type: ChangeLog
  name: Monthly product updates (blog)
  url: https://blog.postalform.com/
- type: APIsJson
  url: https://postalform.com/apis.json
- type: LLMsTxt
  url: llms/postalform-com-llms.txt
- type: LLMsTxt
  name: llms.txt (provider-hosted)
  url: https://postalform.com/llms.txt
- type: AgentCard
  url: a2a/postalform-com-a2a.yml
- type: MCPServer
  url: mcp/postalform-com-mcp.yml
- type: ToolCrosswalk
  url: mcp/postalform-com-tool-crosswalk.yml
- type: WellKnown
  url: well-known/postalform-com-well-known.yml
- type: APICatalog
  url: well-known/postalform-com-api-catalog.json
- type: ContentSignal
  url: well-known/postalform-com-robots.txt
- type: AgentSkill
  url: skills/_index.yml
- type: Authentication
  url: authentication/postalform-com-authentication.yml
- type: Conventions
  url: conventions/postalform-com-conventions.yml
- type: Idempotency
  url: conventions/postalform-com-conventions.yml
- type: ErrorCatalog
  url: errors/postalform-com-problem-types.yml
- type: Lifecycle
  url: lifecycle/postalform-com-lifecycle.yml
- type: Sandbox
  url: sandbox/postalform-com-sandbox.yml
- type: Conformance
  url: conformance/postalform-com-conformance.yml
- type: DataModel
  url: data-model/postalform-com-data-model.yml
- type: Webhooks
  url: asyncapi/postalform-com-projects-webhooks.yml
- type: Plans
  url: plans/postalform-com-plans-pricing.yml
- type: RateLimits
  url: rate-limits/postalform-com-rate-limits.yml
- type: Packages
  url: packages/postalform-com-packages.yml
- type: AgenticAccess
  url: agentic-access/postalform-com-agentic-access.yml
- type: DomainSecurity
  url: security/postalform-com-domain-security.yml
- type: DataSubjectRequest
  url: https://postalform.com/privacy
x-enrichment:
  date: '2026-09-19'
  status: enriched
  artifacts_added: 41
  pass: local-v3
x-a2a:
  verified: true
  probed: '2026-09-26'
  url: https://postalform.com/.well-known/agent-card.json
  grade: conformant
  protocol_version: '1.0'
  control: 404

Work with this as data

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

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
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

curl for this page

This provider

curl "https://apis.io/api/v1/providers/postalform-com"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/postalform-com/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/postalform-com/evidence"

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A second provider on the same verified email joins the account you already have.