storelib_rs

A Rust port of StoreLib — a library for interacting with Microsoft Store endpoints to query product information and resolve package download URLs.

Supports native (tokio), WebAssembly, and C / FFI targets.

Features

• Query the Microsoft Store Display Catalog by Product ID, Package Family Name, Xbox Title ID, and more
• Batch lookup — fetch many products in one HTTP round-trip via bigIds
• Resolve direct .appx / .msix / .eappx download URLs via the FE3 delivery service
• Typed product accessors — handler.title(), .price(), .packages(), .images_with_purpose() etc. walk the catalog tree without display_sku_availabilities.as_deref()?.first()?... chains
• Search the catalog by query string and device family
• 7 endpoints (Production, Int, Xbox, XboxInt, Dev, OneP, OnePInt)
• 259 markets + 185 ISO 639-1 languages + 350 Microsoft Store BCP-47 language tags (sourced from the IANA registry + learn.microsoft.com's supported-languages table)
• Locale::from_tag("en-US") / Locale.fromTag("zh-Hant-TW") builds a locale directly from a BCP-47 tag
• Optional MSA / XBL3.0 authentication token support for sandboxed and flighted listings
• Real-time progress reporting via a callback on every platform (native closure / JS function / C function pointer)
• Cancellation via AbortSignal (WASM), CancellationToken (native), or StorelibCancellation (FFI). Cancel from any thread.
• Configurable retry + timeout — ClientConfig exposes timeout, max_retries, initial_backoff, max_backoff, retry_on_status. Cancel-aware backoff returns Cancelled instantly.
• Structured errors in JS — thrown Error objects carry a kind discriminant ("http" | "json" | "xml" | "notFound" | "timedOut" | "cancelled" | "other")
• First-class TypeScript types — every WASM binding is typed (Promise<DisplayCatalogModel | null>, Promise<PackageInstance[]>, …); no more any returns
• camelCase JSON wire format across all bindings; PascalCase from the upstream MS Store API is accepted on the way in
• Structured logging via the log facade (env_logger on native, pluggable on WASM)

Installation

Add to your Cargo.toml:

[dependencies]
storelib_rs = { git = "https://github.com/query-store-links/storelib_rs" }

For WebAssembly, enable the wasm feature:

[dependencies]
storelib_rs = { git = "https://github.com/query-store-links/storelib_rs", features = ["wasm"] }

Library usage

Query a product

use storelib_rs::{DisplayCatalogHandler, IdentifierType};

let mut handler = DisplayCatalogHandler::production();
handler.query_dcat("9wzdncrfj3tj", IdentifierType::ProductId, None).await?;

if handler.is_found {
    // Typed accessors walk the catalog tree for you — no manual
    // `display_sku_availabilities.as_deref()?.first()?.sku.as_ref()?...` chains.
    println!("Title:     {:?}", handler.title());
    println!("Publisher: {:?}", handler.publisher_name());
    println!("Price:     {:?}", handler.price().map(|p| (&p.currency_code, p.list_price)));
    println!("Packages:  {}", handler.packages().len());

    // The raw model is still available if you need a field the accessors
    // don't expose.
    let _listing = handler.product_listing.as_ref().unwrap();
}

Batch query (many products in one round-trip)

let ids = ["9WZDNCRFJ3TJ", "9NBLGGH4R315", "9P3JFPWWDZRC"];
handler.query_dcat_batch(&ids, None).await?;

for product in handler.products() {
    let title = product
        .localized_properties.as_deref()
        .and_then(|v| v.first())
        .and_then(|lp| lp.product_title.as_deref())
        .unwrap_or("<no title>");
    println!("{title}");
}

query_dcat_batch accepts Microsoft Store Product IDs only — the bigIds endpoint doesn't support alternate identifiers.

Resolve package download URLs

let packages = handler.get_packages_for_product(None).await?;
for pkg in &packages {
    println!("{} [{:?}]", pkg.package_moniker, pkg.package_type);
    if let Some(url) = &pkg.package_uri {
        println!("  {url}");
    }
}

Search the catalog

use storelib_rs::DeviceFamily;

let results = handler.search_dcat("netflix", DeviceFamily::Desktop).await?;
println!("Total: {}", results.total_result_count.unwrap_or(0));

Custom locale and endpoint

use storelib_rs::{DCatEndpoint, DisplayCatalogHandler, Lang, Locale, Market};

let locale = Locale::new(Market::Gb, Lang::En, true);
let mut handler = DisplayCatalogHandler::new(DCatEndpoint::Production, locale);

Building a locale from a BCP-47 tag

use storelib_rs::{LanguageTag, Locale};
use std::str::FromStr;

// "zh-Hant-TW" → Locale { market: TW, language: zh, include_neutral: true }
let tag = LanguageTag::from_str("zh-Hant-TW")?;
let locale = Locale::from_tag(tag, true)?;

Authentication (sandboxed / flighted listings)

// MSA token or XBL3.0 token
handler.query_dcat("9wzdncrfj3tj", IdentifierType::ProductId, Some("your-token")).await?;

// Authenticated package resolution
let packages = handler.get_packages_for_product(Some("your-token")).await?;

Progress reporting

use storelib_rs::ProgressEvent;

handler.progress.set(Box::new(|e: ProgressEvent| {
    eprintln!("[{}] {} ({:?}/{:?})", e.stage, e.message, e.current, e.total);
}));

Stages emitted during query_dcat / get_packages_for_product / search_dcat:

Operation	Stages
query_dcat	dcat.request → dcat.response → dcat.parse → dcat.done (or dcat.notFound)
get_packages_for_product	fe3.start → fe3.getCookie → fe3.syncUpdates → fe3.parseUpdateIds[.done] → fe3.parsePackages[.done] → fe3.resolveUrls[.done] → fe3.done
search_dcat	search.request → search.response → search.parse → search.done

.done counter stages populate current/total with N of N items processed.

JavaScript / WebAssembly usage

import {
    DisplayCatalogHandler,
    Locale,
    parseLanguageTag,
    listLanguageTags,
} from 'storelib_rs';

// Build a locale directly from a BCP-47 tag.
const locale = Locale.fromTag('en-US', /* includeNeutral */ false);
const handler = new DisplayCatalogHandler('production', locale);

// Subscribe to per-stage progress updates.
handler.onProgress(({stage, message, current, total}) => {
    console.log(`[${stage}] ${message}` + (total != null ? ` (${current}/${total})` : ''));
});

// Cancel a stalled call after 5s.
const ctrl = new AbortController();
setTimeout(() => ctrl.abort(), 5000);

try {
    await handler.queryDcat('9WZDNCRFJ3TJ', 'ProductId', null, ctrl.signal);

    // Typed accessors on the handler — read fields without hand-walking the model.
    console.log(handler.title, handler.publisherName, handler.price);

    const pkgs = await handler.getPackagesForProduct(null, ctrl.signal);
    // pkgs: Array<{ packageMoniker, packageUri, packageType, applicabilityBlob, updateId, packageSize }>
} catch (e) {
    if (e.kind === 'cancelled') return;
    if (e.kind === 'notFound') showNotFound();
    else console.error(e.kind, e.message);
}

// Batch lookup — single round-trip for many products.
const products = await handler.queryDcatBatch(
    ['9WZDNCRFJ3TJ', '9NBLGGH4R315', '9P3JFPWWDZRC'],
    null,
    null,
);
for (const p of products) {
    console.log(p.localizedProperties?.[0]?.productTitle);
}

// Enumerate the full Microsoft Store BCP-47 tag list.
for (const {code, englishName} of listLanguageTags()) {
    console.log(code, englishName);
}

The idType argument to queryDcat is tolerant — "ProductId", "productId", "product-id", and "PRODUCT_ID" all resolve to the same enum.

The handler exposes typed JS getters for common fields: title, description, publisherName, price, prices, packages, availabilities, products, wuCategoryId, lastModifiedDate, plus imagesWithPurpose("Logo" | "Tile" | "Screenshot" | …).

CLI usage

storelib_rs [--log-level <LEVEL>] <COMMAND>

Commands:
  packages  Fetch direct download URLs for a product's packages
  query     Query detailed product information
  search    Search the store catalog

Options:
  --log-level <LEVEL>  error | warn | info | debug | trace  [default: info]

Examples

# Resolve all package URLs for an app
storelib_rs packages 9wzdncrfj3tj

# Query by Package Family Name
storelib_rs query NETFLIX.APP_mcm4njqhnhss8 --type pfn

# Search for Xbox games
storelib_rs search halo --family xbox

# Authenticated query (flighted / sandbox)
storelib_rs packages 9wzdncrfj3tj --token "XBL3.0 x=..."

# Debug logging (shows HTTP requests, FE3 update IDs, URL resolution)
storelib_rs packages 9wzdncrfj3tj --log-level debug

# Trace logging (also dumps raw SOAP response bodies)
storelib_rs packages 9wzdncrfj3tj --log-level trace

RUST_LOG overrides --log-level:

RUST_LOG=storelib_rs=debug storelib_rs packages 9wzdncrfj3tj

Identifier types

--type value	Description
product-id (default)	Microsoft Store Product ID (e.g. 9wzdncrfj3tj)
pfn	Package Family Name
content-id	Content ID
xbox-title-id	Xbox Title ID
legacy-phone	Legacy Windows Phone Product ID
legacy-store	Legacy Windows Store Product ID
legacy-xbox	Legacy Xbox Product ID

C / FFI usage

Build the shared library with cargo build --release --features ffi. The C header is at include/storelib_rs.h. See the header for the full API; minimal example:

#include "storelib_rs.h"
#include <stdio.h>

static void on_progress(
    const char* stage,
    const char* message,
    int32_t has_current, uint32_t current,
    int32_t has_total,   uint32_t total,
    void* user_data
) {
    (void)user_data;
    if (has_total) {
        printf("[%s] %s (%u/%u)\n", stage, message, current, total);
    } else {
        printf("[%s] %s\n", stage, message);
    }
}

int main(void) {
    StorelibHandle* h = storelib_new();
    storelib_set_progress_callback(h, on_progress, NULL);

    int32_t rc = storelib_query(h, "9wzdncrfj3tj", STORELIB_ID_PRODUCT_ID, NULL);
    if (rc == STORELIB_OK && storelib_is_found(h)) {
        char* title = storelib_product_title(h);
        if (title) { printf("Title: %s\n", title); storelib_free_string(title); }

        char* price = storelib_price_json(h);
        if (price) { printf("Price: %s\n", price); storelib_free_string(price); }

        char* json = storelib_packages_json(h, NULL);
        if (json) { puts(json); storelib_free_string(json); }
    } else {
        fprintf(stderr, "query failed (%d): %s\n", rc, storelib_last_error(h));
    }

    // Batch query — one HTTP round-trip for three products.
    const char* ids[] = { "9WZDNCRFJ3TJ", "9NBLGGH4R315", "9P3JFPWWDZRC" };
    char* batch = storelib_query_batch_json(h, ids, 3, NULL);
    if (batch) { puts(batch); storelib_free_string(batch); }

    storelib_free(h);
    return 0;
}

Building

# Native
cargo build --release

# WebAssembly
cargo build --target wasm32-unknown-unknown --features wasm

# C / FFI shared library + header
cargo build --release --features ffi
# Header is at include/storelib_rs.h

License

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License v3.0 as published by the Free Software Foundation.

See LICENSE for the full text.