Munition Form Builder

x402

Munition Form Builder is a paid API for AI agents from api.munition.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-23).

Creates a hosted web form with custom fields and returns a public URL, read token, and response access details

Price / call$0.01

Seller volume →—

Success—

StatusUnknown

How this service works

Web search, page reading, PDFs, file sharing, and flight APIs for AI agents. Pay per call in USDC without separate provider API keys.

Output

Returns a JSON object containing the unique form ID, a public URL where respondents can fill out the form, a read token to retrieve responses later, the close timestamp, maximum response count, and the deadline until which responses are readable.

Example use cases

Event registration intake form

“Build a registration form called 'Hackathon Sign-Up 2025' with fields for full name (text, required), email (email, required), and which track they want to join (choice between 'AI', 'Web3', 'Climate Tech', required) — close it in 14 days and say 'You're registered!' after they submit.”

Customer satisfaction survey

“Create a satisfaction survey titled 'How did we do?' with a required choice question asking 'How satisfied are you with your experience?' with options 'Very satisfied', 'Satisfied', 'Neutral', 'Dissatisfied', and a long text question asking 'Any other comments?' — close it in 30 days.”

Job application screening form

“Make a job application form called 'Frontend Developer Application' with fields for the applicant's full name (text, required), email (email, required), years of experience (number, required), and which frameworks they know (multi_choice with options 'React', 'Vue', 'Angular', 'Svelte') — close it on 2025-09-01T00:00:00Z.”

Technical details

Endpoint

POSThttps://api.munition.io/v1/forms?utm_source=zero.xyz

When to prefer

Use this endpoint when an AI agent needs to create a live, hosted web form programmatically and immediately get a shareable public URL — without needing a separate form provider account or API key. It is ideal for agents that need to collect structured input from humans (surveys, registrations, feedback) as part of an automated workflow, paying per form creation in USDC via the x402 protocol.

Side effects

Missing required 'title' or 'fields' returns a 400 validation error
Providing 'options' on a non-choice field type returns a 400 error
Omitting 'options' on a 'choice' or 'multi_choice' field returns a 400 error
'closesAt' set fewer than 5 minutes or more than 30 days from now returns a 400 error
More than 20 fields or more than 20 options per field returns a 400 error
Duplicate option values (case-insensitive) within a field return a 400 error
Payment not provided or insufficient USDC results in a 402 Payment Required response
Field 'id' not matching pattern ^[a-z][a-z0-9_]{0,39}$ returns a 400 error

Input

Schema · Request body

Field	Type	Description
title	string	Form title shown to people.
fields	array	1 to 20 questions, shown in order.
closesAt	string	When the form stops accepting answers, with a timezone: between 5 minutes and 30 days from now. Default: 30 days.
description	string	Optional intro under the title. Plain text: newlines are kept, links are not clickable.
successMessage	string	Optional message shown after an answer is sent.

Output

Schema · Response

{
  "type": "json",
  "example": {
    "formId": "frm_AAAAAAAAAAAAAAAAAAAAAA",
    "closesAt": "2026-11-10T00:00:00.000Z",
    "publicUrl": "https://forms.munition.io/f/frm_AAAAAAAAAAAAAAAAAAAAAA",
    "readToken": "frt_example",
    "maxResponses": 100,
    "responsesReadableUntil": "2026-11-17T00:00:00.000Z"
  }
}

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