Paid x402 MCP tool for stress-testing launch and marketing copy before publication.
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Review and stress-test launch messaging, landing pages, product announcements, pricing pages, changelogs, app-store listings, and marketing emails before publication. LaunchCheck evaluates copy through eight audience lenses, surfaces positioning and conversion friction, flags claims needing evidence, predicts likely reader questions, recommends concrete changes, and returns a fact-preserving rewrite. Requires $0.50 via x402 on Base.
Launch or marketing copy to review before publication, such as a landing page, product announcement, changelog, pricing page, app-store listing, or email.
Stable key for this logical ReactionCheck request. Reuse it only when retrying the exact same input.
Optional factual, legal, brand, or wording constraints that the review and rewrite must preserve.
Kind of copy being reviewed; use other when none of the listed categories fit.
Optional action the copy should persuade the reader to take, such as sign up, start a trial, buy, upgrade, or learn more.
Optional context about the product, feature, offer, or company needed to judge positioning, clarity, and factual fit.
Optional intended audience or buyer segment whose likely reaction should inform the review.
This tool isn't marked read-only, so it may change something on the server or in an account you connected.
Review and stress-test launch messaging, landing pages, product announcements, pricing pages, changelogs, app-store listings, and marketing emails before publication. LaunchCheck evaluates copy through eight audience lenses, surfaces positioning and conversion friction, flags claims needing evidence, predicts likely reader questions, recommends concrete changes, and returns a fact-preserving rewrite. Requires $0.50 via x402 on Base.
| Argument | Type | Description |
|---|---|---|
| content* | string | Launch or marketing copy to review before publication, such as a landing page, product announcement, changelog, pricing page, app-store listing, or email. |
| constraints | array | Optional factual, legal, brand, or wording constraints that the review and rewrite must preserve. |
| contentType | string | Kind of copy being reviewed; use other when none of the listed categories fit. |
| desiredAction | string | Optional action the copy should persuade the reader to take, such as sign up, start a trial, buy, upgrade, or learn more. |
| idempotencyKey* | string | Stable key for this logical ReactionCheck request. Reuse it only when retrying the exact same input. |
| productContext | string | Optional context about the product, feature, offer, or company needed to judge positioning, clarity, and factual fit. |
| targetAudience | string | Optional intended audience or buyer segment whose likely reaction should inform the review. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"content",
"idempotencyKey"
],
"properties": {
"content": {
"type": "string",
"maxLength": 12000,
"minLength": 40,
"description": "Launch or marketing copy to review before publication, such as a landing page, product announcement, changelog, pricing page, app-store listing, or email."
},
"constraints": {
"type": "array",
"items": {
"type": "string",
"maxLength": 300,
"minLength": 1
},
"default": [],
"maxItems": 10,
"description": "Optional factual, legal, brand, or wording constraints that the review and rewrite must preserve."
},
"contentType": {
"enum": [
"landing-page",
"product-announcement",
"changelog",
"pricing-page",
"app-store-listing",
"email",
"other"
],
"type": "string",
"default": "other",
"description": "Kind of copy being reviewed; use other when none of the listed categories fit."
},
"desiredAction": {
"type": "string",
"maxLength": 500,
"description": "Optional action the copy should persuade the reader to take, such as sign up, start a trial, buy, upgrade, or learn more."
},
"idempotencyKey": {
"type": "string",
"pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]{0,127}$",
"maxLength": 128,
"minLength": 1,
"description": "Stable key for this logical ReactionCheck request. Reuse it only when retrying the exact same input."
},
"productContext": {
"type": "string",
"maxLength": 2000,
"description": "Optional context about the product, feature, offer, or company needed to judge positioning, clarity, and factual fit."
},
"targetAudience": {
"type": "string",
"maxLength": 1000,
"description": "Optional intended audience or buyer segment whose likely reaction should inform the review."
}
}
}