Instagram font generator API

Type a name, a bio line or a short accent and copy it in 15 Unicode styles, from bold and script to circled and upside down. Works in Instagram bios, captions and most other apps.

• Endpoint: POST https://postboost.co/app/api/tools/fancy-text-generator (operationId generateFancyText)
• Web tool: postboost.co/tools/fancy-text-generator
• Token: optional (limits)
• MCP: tool generate-fancy-text on https://postboost.co/mcp/tools

Request

Field	Type	Default	Description
text	string
style	string: bold, italic, bold_italic, sans_bold, sans_italic, script, bold_script, fraktur, double_struck, monospace, small_caps, circled, squared, upside_down, strikethrough		One style only; every style when omitted.

Call it

curl

curl -X POST https://postboost.co/app/api/tools/fancy-text-generator \
  -H 'Content-Type: application/json' \
  -d '{"text":"Hello 123","style":"bold"}'

Python

from postboost import ApiClient, Configuration
from postboost.api.free_tools_api import FreeToolsApi
from postboost.models import FreeToolGenerateFancyTextRequest

with ApiClient(Configuration()) as client:
    api = FreeToolsApi(client)
    result = api.generate_fancy_text(FreeToolGenerateFancyTextRequest.from_dict({"text": "Hello 123", "style": "bold"}))
    print(result.to_dict())

Node.js

import { FreeToolsApi } from 'postboost';

const api = new FreeToolsApi();
const { body } = await api.generateFancyText({ text: "Hello 123", style: "bold" });
console.log(body);

PHP

use PostBoostClient\Api\FreeToolsApi;
use PostBoostClient\Model\FreeToolGenerateFancyTextRequest;

$api = new FreeToolsApi(new GuzzleHttp\Client());
$result = $api->generateFancyText(new FreeToolGenerateFancyTextRequest(['text' => "Hello 123", 'style' => "bold"]));
echo $result;

Go

import (
    "context"
    "encoding/json"
    "fmt"

    postboost "github.com/postboost-co/postboost-go"
)

var request postboost.FreeToolGenerateFancyTextRequest
if err := json.Unmarshal([]byte(`{"text":"Hello 123","style":"bold"}`), &request); err != nil {
    panic(err)
}

client := postboost.NewAPIClient(postboost.NewConfiguration())
result, _, err := client.FreeToolsAPI.GenerateFancyText(context.Background()).FreeToolGenerateFancyTextRequest(request).Execute()
fmt.Println(result, err)

Ruby

require 'postboost'

api = PostBoost::FreeToolsApi.new
result = api.generate_fancy_text(PostBoost::FreeToolGenerateFancyTextRequest.new({ text: "Hello 123", style: "bold" }))
puts result.to_hash

Java

import com.postboost.ApiClient;
import com.postboost.api.FreeToolsApi;
import com.postboost.model.FreeToolGenerateFancyTextRequest;
import com.postboost.model.FreeToolGenerateFancyTextResponse;

FreeToolsApi api = new FreeToolsApi(new ApiClient());
FreeToolGenerateFancyTextRequest request = FreeToolGenerateFancyTextRequest.fromJson("{\"text\":\"Hello 123\",\"style\":\"bold\"}");
FreeToolGenerateFancyTextResponse result = api.generateFancyText(request);
System.out.println(result.toJson());

C#

using Newtonsoft.Json;
using PostBoost.Client.Api;
using PostBoost.Client.Client;
using PostBoost.Client.Model;

var api = new FreeToolsApi(new Configuration());
var request = JsonConvert.DeserializeObject<FreeToolGenerateFancyTextRequest>(@"{""text"":""Hello 123"",""style"":""bold""}");
var result = await api.GenerateFancyTextAsync(request);
Console.WriteLine(result.ToJson());

Rust

use postboost::apis::configuration::Configuration;
use postboost::apis::free_tools_api;
use postboost::models::FreeToolGenerateFancyTextRequest;

let config = Configuration::new();
let request: FreeToolGenerateFancyTextRequest = serde_json::from_str(r##"{"text":"Hello 123","style":"bold"}"##)?;
let result = free_tools_api::generate_fancy_text(&config, request).await?;
println!("{:?}", result);

CLI

echo '{"text":"Hello 123","style":"bold"}' | ./postboost-cli --content-type application/json generateFancyText -

With a token, send Authorization: Bearer YOUR_API_TOKEN as a default header (how, per SDK).

Response

{
    "styles": [
        {
            "key": "bold",
            "label": "Bold",
            "text": "𝐇𝐞𝐥𝐥𝐨 𝟏𝟐𝟑"
        }
    ]
}

With MCP

Connect https://postboost.co/mcp/tools (setup) and ask, for example: Convert text to fancy Unicode styles with the PostBoost generate-fancy-text tool.

Errors

Status	When
401	The Authorization header holds an invalid token. Leave it out to call as a guest.
413	The JSON body is larger than 128 KB.
422	A field is invalid; the body lists the errors per field.
429	A limit is reached; see limits.