Text Processing

Fixed-Width Column Parser

Parse fixed-width text with explicit or inferred field boundaries, character or UTF-8 byte positions, schemas, and anomaly reports.

json· JSON resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/fixed-width-column-parser' \
  -H 'Content-Type: application/json' \
  -d '{"textInput":"ID   NAME      SCORE\n001  Alice     98   \n002  Bob       87   ","parseMode":"schema","schemaJson":"[{\"name\":\"id\",\"start\":0,\"end\":5},{\"name\":\"name\",\"start\":5,\"end\":15},{\"name\":\"score\",\"start\":15,\"end\":20}]","positionMode":"characters","firstRowIsHeader":true,"trimValues":true}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/fixed-width-column-parser

Parameters

Name	Type	Required	Description
textInput	textarea	Yes	—
parseMode	select	No	—
schemaJson	textarea	No	—
positionMode	select	No	—
firstRowIsHeader	checkbox	No	—
trimValues

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-fixed-width-column-parser": {
      "name": "fixed-width-column-parser",
      "description": "Parse fixed-width text with explicit or inferred field boundaries, character or UTF-8 byte positions, schemas, and anomaly reports.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=fixed-width-column-parser",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "fixed-width-column-parser",
    "arguments": {
  "textInput": "ID   NAME      SCORE\n001  Alice     98   \n002  Bob       87   ",
  "parseMode": "schema",
  "schemaJson": "[{\"name\":\"id\",\"start\":0,\"end\":5},{\"name\":\"name\",\"start\":5,\"end\":15},{\"name\":\"score\",\"start\":15,\"end\":20}]",
  "positionMode": "characters",
  "firstRowIsHeader": true,
  "trimValues": true
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

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