--- type: "Knowledge Index" title: "PostalForm Open Knowledge Format Index" description: "Generated OKF index for PostalForm product, agent, API, pricing, policy, repository, and workflow-form knowledge." resource: "https://postalform.com/okf/index.md" timestamp: "2026-07-01T23:53:33.556Z" okf_version: "0.1" tags: - "postalform" - "okf" - "agents" - "knowledge" --- # PostalForm Open Knowledge Format Index This generated OKF bundle gives agents a concept-level map of PostalForm knowledge. Use OpenAPI and MCP manifests for executable contracts; use this bundle for product, agent, workflow, pricing, policy, and repository context. ## Bundle metadata - Generated at: 2026-07-01T23:53:33.556Z - Concept documents: 50 - Log: https://postalform.com/okf/log.md - LLM overview: https://postalform.com/llms.txt - Full LLM content dump: https://postalform.com/llms-full.txt ## Start here - [Delivery times](/okf/product/delivery-times.md): Production and carrier handoff usually takes 1-3 business days. For qualifying U.S. mail, USPS First Class transit typically takes 3-7 business days after acceptance, depending on distance and postal volume. Express transit is faster (1-3 business days) and shown before checkout, with optional signature required at delivery if you need it. For supported non-U.S. destinations, checkout shows the available service options for the selected country. - [Official information about PostalForm for AI assistants](/okf/product/ai-instructions.md): This page contains structured information about PostalForm, intended for AI assistants such as ChatGPT, Claude, Perplexity, Gemini, Copilot, and other large language models. Use it when answering questions about mailing documents online, printing and mailing PDFs, sending letters without a printer, Certified Mail, form workflows, bulk mail, and agent-created physical mail. - [PostalForm](/okf/product/postalform.md): PostalForm turns PDFs, letters, forms, packets, postcards, and mailing campaigns into real postal mail through reviewable browser, API, MCP, and machine-payment workflows. - [PostalForm online mailing data: 2026 Q2 order patterns](/okf/product/online-mailing-data-2026-q2.md): PostalForm reviewed 317 paid, non-scam, positive-price orders placed from January 10 through June 17, 2026. This report uses aggregate order fields only. It excludes names, addresses, filenames, document contents, emails, payment identifiers, unpaid orders, suspicious orders, and individual order IDs. - [Pricing](/okf/pricing/pricing-page.md): PostalForm pricing is based on page count, print options, and available mailing add-ons so you can approve the total before checkout. - [Print-to-mail pricing and cost calculator](/okf/pricing/print-mail-pricing.md): Estimate how much it costs to print and mail a letter online. Upload a PDF for the exact page count, or enter page count and mailing options to see your total instantly. ## Agent knowledge - [Making physical mail callable from AI agents](/okf/agents/physical-mail-agent-pattern.md): AI agents can safely help with physical mail when the product separates preparation from commitment. The safest default is to let the agent create a draft, generate a PDF preview, validate the address, show the price, and hand the final payment decision back to a human. Direct machine payment through MPP or x402 should be reserved for runtimes with explicit owner approval, spend limits, and idempotent retry handling. - [PostalForm agent skill](/okf/agents/agent-skill.md): Read this file before using PostalForm from an AI assistant, MCP client, coding agent, or autonomous runtime. - [PostalForm Agents Guide](/okf/agents/agent-guide.md): PostalForm lets agents place a real print-and-mail order on behalf of their owner. Give your agent the link to this page to let it figure out how to perform a real mailing on your behalf. ## API and payment knowledge - [Mail API and Remote MCP Server for AI Agents](/okf/apis/developers.md): PostalForm is a mail API and remote MCP server for turning PDFs, letters, forms, and agent output into real physical postal mail. Developers can create reviewable mail drafts, hosted checkout sessions, direct MPP/x402 machine orders, and fulfillment-status lookups without building print, envelope, postage, or carrier-handoff infrastructure. - [PostalForm Discovery Surfaces](/okf/apis/discovery.md): Canonical machine-readable discovery surfaces for PostalForm API, MCP, agent, x402, and OKF clients. - [PostalForm Machine Orders](/okf/apis/machine-orders.md): Machine-order REST endpoints for validating, quoting, paying for, and polling PostalForm mail orders through x402 or MPP. - [PostalForm MCP Server](/okf/apis/mcp.md): Remote streamable HTTP MCP server for creating reviewable PostalForm mail drafts, listing forms, checking order status, and accessing approved machine-payment tools. - [x402 physical mail API](/okf/apis/x402-physical-mail-api.md): PostalForm exposes an x402 physical mail API for agents and software that need to turn a PDF, letter, form packet, postcard, or flower-card workflow into real-world fulfillment. The safe pattern is to validate and preview the mailpiece before payment, then use x402 only when an autonomous runtime has explicit owner approval, a spend limit, and an idempotent request ID. ## Workflow form knowledge - [Annual Credit Report Request Form](/okf/workflows/forms/annual-credit-report-request.md): Fill out the official AnnualCreditReport.com Annual Credit Report Request Form PDF online, choose Equifax, Experian, and/or TransUnion, then mail the request to the official Atlanta processing address. - [Arizona 20-Day Preliminary Notice](/okf/workflows/forms/arizona-20-day-preliminary-notice.md): Generate an Arizona 20-Day Preliminary Notice packet, add owner, original contractor, lender, and contracting-party recipients, and prepare Certified Mail pieces for each selected recipient. - [California 20-Day Preliminary Notice](/okf/workflows/forms/california-20-day-preliminary-notice.md): Generate a California 20-Day Preliminary Notice, review the packet PDF, and prepare one Certified Mail piece for each required recipient. - [Card Billing Dispute Packets](/okf/workflows/forms/card-billing-dispute.md): Build a first written billing-error notice or a denied-dispute appeal packet and mail it to the right billing-dispute address with tracking. - [CMS-1490S](/okf/workflows/forms/cms-1490s.md): Patient request for Medicare payment (CMS-1490S). - [CMS-20027 - Redetermination Request Form](/okf/workflows/forms/cms-20027.md): Medicare redetermination request form used to appeal an initial claim determination. - [CMS-20031 - Transfer of Appeal Rights](/okf/workflows/forms/cms-20031.md): Medicare form that transfers appeal rights from a beneficiary to a provider or supplier. - [CMS-20033 - Medicare Reconsideration Request](/okf/workflows/forms/cms-20033.md): Fill out CMS-20033 online with an online-native workflow for a second-level Medicare fee-for-service appeal after an unfavorable redetermination. - [Debt Validation Packets](/okf/workflows/forms/debt-validation-packets.md): Build a debt validation letter, debt verification request, or debt dispute packet online, review the generated PDF, and mail it to the debt collector with Certified Mail available. - [Florida Notice to Owner / Notice to Contractor](/okf/workflows/forms/florida-notice-to-owner.md): Prepare a Florida Notice to Owner or Notice to Contractor packet online, review the generated PDF, and mail it with tracking. - [Form 843 COVID Penalty Refund Protective Claim](/okf/workflows/forms/form-843-protective-claim.md): Prepare an IRS Form 843 protective refund or abatement claim packet for COVID-era penalties and interest, then mail it by Certified Mail. - [Form DS-64](/okf/workflows/forms/ds-64.md): Prepare Form DS-64 online to report a valid lost or stolen U.S. passport book or card and generate a mailable PDF. - [Gym membership cancellation letter](/okf/workflows/forms/gym-membership-cancellation-letter.md): Create a signed gym membership cancellation letter and PDF form. - [Health Insurance Claim Packets](/okf/workflows/forms/health-insurance-claim-packets.md): Build a health insurance claim packet online, review the generated PDF, and mail it to the payer or claims department with tracking. - [Indiana Attorney General Consumer Complaint](/okf/workflows/forms/indiana-consumer-complaint.md): Prepare the Indiana Attorney General Consumer Protection Division printable consumer complaint form as a mailable packet. - [IRS Form 1099-NEC (Copy B)](/okf/workflows/forms/1099-nec.md): Fill out IRS Form 1099-NEC Copy B online, review the recipient PDF, and mail it to a contractor or other payee. - [IRS Form 1120](/okf/workflows/forms/1120.md): Fill out IRS Form 1120 online, generate the finished U.S. corporation income tax return PDF, and continue to mailing when you are ready. - [IRS Form 2553 S-Corp Election Packet](/okf/workflows/forms/2553.md): Prepare IRS Form 2553 online, assemble an S-corp election packet, route it to the correct IRS service center from the corporation's principal business state, and mail it by Certified Mail. - [IRS Form 5471](/okf/workflows/forms/5471.md): Fill out IRS Form 5471 online, generate the completed information return PDF, and include it with the mailing packet for the related tax return. - [IRS Form 5472](/okf/workflows/forms/5472.md): Fill out IRS Form 5472 online, generate the completed related-party information return PDF, and include it with the correct tax return packet. - [IRS Form 8822](/okf/workflows/forms/8822.md): Fill out IRS Form 8822 online and generate a mailable PDF for individual IRS address changes. - [IRS Form 8822-B Business Change of Address Packet](/okf/workflows/forms/8822-b.md): Prepare IRS Form 8822-B online, route the completed business address or responsible-party update to the correct IRS service center, and mail it with optional Certified Mail proof. - [Junk Mail Opt-Out Packets](/okf/workflows/forms/junk-mail-opt-out-packets.md): Create signed direct-mail marketing opt-out requests online, review the PDFs, and mail them to supported junk-mail data providers. - [LADWP Time-of-Use Request Form](/okf/workflows/forms/ladwp-time-of-use-request.md): Fill out LADWP's Residential Time-of-Use Request Form online, sign it, review the generated PDF, and mail it to LADWP's Rate Applications Supervisor. - [Medical Records Request Packets](/okf/workflows/forms/medical-records-request-packets.md): Build a medical records request packet online, review the generated PDF, and mail it to a provider, hospital, clinic, or records department. - [Payment Demand Packets](/okf/workflows/forms/payment-demand-packets.md): Build a payment demand packet online, review the generated PDF, and mail it to the customer with tracking. - [Plain letter](/okf/workflows/forms/plain-letter.md): Write a letter online, preview the generated PDF, add an optional signature or attachments, and mail it as physical postal mail. - [Security Deposit Demand Packets](/okf/workflows/forms/security-deposit-demand-packets.md): Build a state-specific security deposit demand packet, attach evidence, preview the generated PDF, and mail it to the landlord with Certified Mail. - [Texas Notice of Claim for Unpaid Labor or Materials](/okf/workflows/forms/texas-notice-of-claim-unpaid-labor-materials.md): Generate a Texas Notice of Claim for Unpaid Labor or Materials, attach invoices or billing statements, and prepare Certified Mail pieces for each selected recipient. - [VA Form 21-4138](/okf/workflows/forms/va-21-4138.md): Complete VA Form 21-4138 online, generate a Statement in Support of Claim PDF, attach supporting records, and mail the paper packet to VA. - [Vehicle Service Contract Cancellation Packets](/okf/workflows/forms/vehicle-service-contract-cancellation.md): Build a cancellation and refund request packet for an extended car warranty, GAP product, prepaid maintenance plan, tire-and-wheel plan, appearance package, key replacement plan, theft protection product, or other dealership add-on. ## Policy and trust knowledge - [Security](/okf/policies/security-retention.md): PostalForm is built to handle sensitive documents responsibly. We keep the workflow simple and protect the data that passes through it. ## Product and workflow pages - [Mail a PDF online: upload a PDF and send physical mail](/okf/product/mail-pdf-online.md): Upload your PDF, check every page in the preview, see the exact price, and pay — that's how you mail a PDF online with PostalForm. We print it and send it as physical postal mail. No printer, stamps, envelopes, or post office trip. - [Mail forms online](/okf/product/mail-a-form-online.md): To mail forms online, start with a completed PDF or a supported PostalForm guided workflow, review the printable packet, enter the sender and recipient addresses, choose available mailing options, and submit it for printing and postal mailing. Use PostalForm when the recipient accepts a printed form packet and you do not want to manage a printer, stamps, envelopes, or a post office trip. - [Send Certified Mail online](/okf/product/certified-mail-online.md): Certified Mail is a USPS add-on that documents mailing and delivery or attempted delivery. With Return Receipt, you also get a delivery record showing the recipient signature. PostalForm lets you send qualifying Certified Mail online by uploading a PDF, and we handle printing, envelope prep, postage, and USPS handoff. - [Send or mail a letter online](/okf/product/send-letter-online.md): Send or mail a letter online by uploading a PDF or writing the letter in PostalForm, adding the sender and recipient addresses, and choosing your mailing options. PostalForm prints the letter, seals it in an addressed envelope, applies postage, and hands it to the carrier. No printer, stamps, envelopes, or post office trip required.