# PostalForm

**Canonical:** https://apis.io/providers/postalform-com/  
**Website:** https://postalform.com/  
**APIs profiled:** 3

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.

## Kin Score — 58.8 / 100 (strong)

Scored 2026-10-09 under rubric 0.23.0. Trend: flat (+0.5 from 58.3).

| Facet | Score |
|---|---|
| Discoverability | 80.0 |
| Contract Quality | 52.0 |
| Contract Governance | 18.2 |
| Operational Transparency | 44.7 |
| Developer Ergonomics | 71.4 |
| Access Clarity | 76.3 |

Regulatory layer — **Payments**: 25.9 (matched via tags).

## Agent readiness — 60.3 (agent-native)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | bearer |
| Idempotency | verified |
| Error Semantics | verified |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | yes |
| Well Known Catalog | yes |
| Consent Identity | yes |
| Agent Card | conformant |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | self |

## APIs (11)

- **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.

## MCP servers (1)

- **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...

## Agentic access (1)

- **Postalform Com Agentic Access** — 44 operations · 24 acting · 1 human-in-the-loop

## Security (2)

- **Postalform Com Authentication** — http/none/payment-gated · 3 schemes
- **Postalform Com Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Postalform Com Plans Pricing**

## Tags

Physical Mail, Print & Mail, Postal Mail, Certified Mail, Documents, Agents, Agentic Commerce, MCP, A2A, x402, Machine Payments, Webhook, Agent-Native, United States

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/postalform-com/). Scores are computed from the provider's own public artifacts under a published rubric.