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-parserParameters
| 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).