asc-app-create-ui

A procedure for creating an app record in Apple's App Store Connect using Apple's internal Iris API and a saved Blitz web session. It uses a bundle identifier, SKU, app name, and primary language.

In plain words
What is it for?
Use it to create the App Store Connect entry for a new iPhone or iPad app from its bundle identifier and related app details.
Why use it?
It automates the initial app-record setup when the required Apple web session is available. It requires choosing a language and may need Apple web authentication first.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/blitzdotdev/blitz-mac/asc-app-create-ui
Any agent
npx skills add blitzdotdev/blitz-mac --skill asc-app-create-ui
Clone the repo
git clone --depth 1 https://github.com/blitzdotdev/blitz-mac

Made for: Claude Code, Codex.

Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,576 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00019 $0.01576
Opus 5 $0.00010 $0.00788
Sonnet 5 $0.00004 $0.00315
Haiku 4.5 $0.00002 $0.00158

Measured 2d ago against content hash 0dc0b9ff6faf, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

asc-app-create-ui scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

import json, os, urllib.request, sys
src/resources/skills/asc-app-create-ui/SKILL.md · 173 lines

How it starts

The opening of the file, as written. The whole thing — 173 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Create an App Store Connect app using Apple's iris API. Authentication is handled via a web session file at ~/.blitz/asc-agent/web-session.json managed by Blitz.

Extract from the conversation context:

  • bundleId — the bundle identifier (e.g. com.blitz.myapp)
  • sku — the SKU string (may be provided; if missing, generate one from the app name)

Workflow

1. Check for an existing web session

test -f ~/.blitz/asc-agent/web-session.json && echo "SESSION_EXISTS" || echo "NO_SESSION"
  • If NO_SESSION: call the asc_web_auth MCP tool first. Wait for it to complete before proceeding.
  • If SESSION_EXISTS: proceed.

2. Ask the user for the primary language

Ask what primary language/locale the app should use. Common choices: en-US (English US), en-GB (English UK), ja (Japanese), zh-Hans (Simplified Chinese), ko (Korean), fr-FR (French), de-DE (German).

3. Derive the app name

Take the last component of the bundle ID after the final ., capitalize the first letter. Confirm with the user.

4. Create the app via iris API

Use the following self-contained script. Replace BUNDLE_ID, SKU, APP_NAME, and LOCALE with the resolved values. Do not print or log cookies.

Key differences from the public REST API:

  • Uses appstoreconnect.apple.com/iris/v1/ (not api.appstoreconnect.apple.com)
  • Authenticated via web session cookies (not JWT)
  • Uses appInfos relationship (not bundleId relationship)
  • App name goes on appInfoLocalizations (not appStoreVersionLocalizations)
  • Uses ${new-...} placeholder IDs for inline-created resources
python3 -c "
import json, os, urllib.request, sys

BUNDLE_ID = 'BUNDLE_ID_HERE'
SKU = 'SKU_HERE'
APP_NAME = 'APP_NAME_HERE'
LOCALE = 'LOCALE_HERE'

session_path = os.path.expanduser('~/.blitz/asc-agent/web-session.json')
if not os.path.isfile(session_path):
    print('ERROR: No web session found. Call asc_web_auth MCP tool first.')
    sys.exit(1)
with open(session_path) as f:
    raw = f.read()

store = json.loads(raw)
session = store['sessions'][store['last_key']]
cookie_str = '; '.join(
    (f'{c[\"name\"]}=\"{c[\"value\"]}\"' if c['name'].startswith('DES') else f'{c[\"name\"]}={c[\"value\"]}')
    for cl in session['cookies'].values() for c in cl
    if c.get('name') and c.get('value')
)

headers = {
    'Content-Type': 'application/json',
    'Accept': 'application/json',
    'X-Requested-With': 'XMLHttpRequest',
    'Origin': 'https://appstoreconnect.apple.com',
    'Referer': 'https://appstoreconnect.apple.com/',
    'Cookie': cookie_str
}

create_body = json.dumps({
    'data': {
        'type': 'apps',
        'attributes': {
            'bundleId': BUNDLE_ID,
            'sku': SKU,
            'primaryLocale': LOCALE,
        },
        'relationships': {
            'appStoreVersions': {
                'data': [{'type': 'appStoreVersions', 'id': '\${new-appStoreVersion-1}'}]
            },
            'appInfos': {
                'data': [{'type': 'appInfos', 'id': '\${new-appInfo-1}'}]
            }
        }
    },
    'included': [
        {
            'type': 'appStoreVersions',
            'id': '\${new-appStoreVersion-1}',
            'attributes': {'platform': 'IOS', 'versionString': '1.0'},
            'relationships': {
                'appStoreVersionLocalizations': {
                    'data': [{'type': 'appStoreVersionLocalizations', 'id': '\${new-appStoreVersionLocalization-1}'}]
                }
            }
        },
        {
            'type': 'appStoreVersionLocalizations',
            'id': '\${new-appStoreVersionLocalization-1}',
            'attributes': {'locale': LOCALE}
        },
        {
            'type': 'appInfos',
            'id': '\${new-appInfo-1}',
            'relationships': {
                'appInfoLocalizations': {
                    'data': [{'type': 'appInfoLocalizations', 'id': '\${new-appInfoLocalization-1}'}]
                }
            }
        },
        {
            'type': 'appInfoLocalizations',
            'id': '\${new-appInfoLocalization-1}',
            'attributes': {'locale': LOCALE, 'name': APP_NAME}
        }
    ]
}).encode()

req = urllib.request.Request(
    'https://appstoreconnect.apple.com/iris/v1/apps',
    data=create_body, method='POST', headers=headers)
try:
    resp = urllib.request.urlopen(req)
    result = json.loads(resp.read().decode())
    app_id = result['data']['id']
    print(f'App created successfully!')
    print(f'App ID: {app_id}')
    print(f'Bundle ID: {BUNDLE_ID}')
    print(f'Name: {APP_NAME}')
    print(f'SKU: {SKU}')
except urllib.error.HTTPError as e:
    body = e.read().decode()
    if e.code == 401:
        print('ERROR: Session expired. Call asc_web_auth MCP tool to re-authenticate.')
    elif e.code == 409:
        print(f'ERROR: App may already exist or conflict. Details: {body[:500]}')
    else:
        print(f'ERROR creating app: HTTP {e.code} — {body[:500]}')
    sys.exit(1)
"

Read the full file on GitHub · 173 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 173 lines · 19 tokens per session scan A 0dc0b9ff6faf

Subscribe to this mod's changes

asc-app-create-ui is a skill published in the GitHub repository blitzdotdev/blitz-mac (1,742 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 19 tokens to every session and 1,576 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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