API & MCP

Everything a person can do on PastePort — Formatting converter, a program or AI agent can do with the same inputs and get the identical result.

HTTP API

POST https://paperwellpasteport.usefulweb.app/api/v1/calculate – run PastePort — Formatting converter
GET https://paperwellpasteport.usefulweb.app/api/v1/tool – inputs, output schema, examples
OpenAPI 3.1: /openapi.json · /openapi.yaml
Errors: application/problem+json; 422 includes per-field errors.

PastePort — Formatting converter

Convert a bounded set of nested text formatting, fenced code and links with a visual preview and explicit reports of unsupported formatting.

Inputs of PastePort — Formatting converter
Field	Type	Default	Description
`text`	textarea	"Hello _world_\n\nA [useful link](https://usefulweb.site)."	Text
`from`	select (markdown, slack, whatsapp, plain)	"markdown"	From
`to`	select (slack, markdown, whatsapp, plain)	"slack"	To

Example request

Try an example

curl -X POST https://paperwellpasteport.usefulweb.app/api/v1/calculate -H 'content-type: application/json' -d '{}'

Every result contains

inputs (normalised, defaults applied), summary, result (validated against the published schema), units, assumptions, sources, warnings, computedAt and links.

MCP (Model Context Protocol)

Streamable HTTP endpoint: https://paperwellpasteport.usefulweb.app/mcp – protocol revisions 2026-07-28 (stateless) and 2025-11-25 / 2025-06-18 / 2025-03-26 (initialize handshake).
Tools: paperwell_pasteport
Local stdio connector: node src/mcp-stdio.ts --tool=paperwell-pasteport

{
  "mcpServers": {
    "paperwell-pasteport": { "type": "http", "url": "https://paperwellpasteport.usefulweb.app/mcp" }
  }
}