Asc Ad Hoc Distribution

ASC ad hoc distribution

Use the experimental asc distribute workflow to turn an existing iOS archive into a private, verified install link for registered devices. Use TestFlight or the App Store release skills instead when the build should go through Apple-hosted distribution.

Confirm the installed contract before acting:

asc distribute --helpasc distribute plan --helpasc distribute apply --helpasc distribute resume --helpasc distribute status --helpasc distribute verify --help

Choose the workflow

• Use plan -> apply -> resume/status -> verify for an end-to-end, hash-authorized run starting from an .xcarchive.
• Use inspect -> prepare -> publish only when the caller already owns the ad hoc IPA and wants to operate the lower-level boundaries separately.

Guardrails

• Treat the distribution spec, devices file, PKCS#12 identity, password file, run state, and exact install-link artifact as private. Keep them out of Git and require owner-only permissions.
• Never put S3 credentials or presigned URLs in the distribution spec, command output, logs, issues, or chat. Use ASC_S3_ACCESS_KEY_ID, ASC_S3_SECRET_ACCESS_KEY, and optional ASC_S3_SESSION_TOKEN, or the standard AWS SDK credential chain.
• plan is read-only and may exit successfully with ready: false. Inspect the typed blockers and effects before continuing.
• apply can register missing devices, create safe App IDs and successor ad hoc profiles, write local artifacts, and publish immutable objects. Run it only after the user authorizes the exact plan hash and effect inventory.
• The orchestrated workflow supports private access to an existing S3-compatible bucket. It does not create buckets, change policies, delete old builds, install the app, or launch it.
• Input drift, an immutable-object conflict, expired signing material, or an expired private link requires a new plan. Do not force the old run forward.

Preconditions

• An existing iOS .xcarchive with one main app target. Embedded apps, extensions, Watch apps, and App Clips make the v1 plan not ready.
• A local iOS distribution PKCS#12 identity and optional protected password file.
• A protected strict-v1 devices file. For example:

{"schemaVersion":1,"devices":[{"name":"Test iPhone","udid":"DEVICE_UDID","platform":"IOS"}]}

• App Store Connect authentication with access to devices, Bundle IDs, certificates, and profiles.
• An existing S3-compatible bucket and valid credentials.

1. Create the private distribution spec

Relative paths resolve from the spec directory. The spec does not interpolate environment variables or accept credentials. A representative private config is:

{  "schemaVersion": 1,  "devicesFile": "devices.json",  "signing": {    "identity": {      "format": "pkcs12",      "path": "../signing/distribution.p12",      "passwordFile": "../secrets/distribution-p12-password"    },    "minimumValidityDays": 7,    "maxMutations": 32  },  "publication": {    "endpoint": "https://objects.example.com",    "downloadEndpoint": "https://downloads.example.com",    "region": "auto",    "bucket": "ios-builds",    "prefix": "team/app",    "addressingStyle": "path",    "urlTtl": "24h",    "downloadGrace": "1h",    "verifyTimeout": "30s"  },  "metadata": {    "title": "App",    "channel": "pull-request-42",    "sourceRevision": "abc123",    "sourceUrl": "https://example.com/team/app/commit/abc123"  }}

passwordFile, certificateSha256, downloadEndpoint, and every metadata field are optional. An omitted password file means the PKCS#12 must use an empty password. Protect the config and secret inputs before planning:

chmod 600 ".asc/distribution/config.json" ".asc/distribution/devices.json"chmod 600 ".asc/signing/distribution.p12" ".asc/secrets/distribution-p12-password"

2. Plan without mutation

asc distribute plan \  --archive-path ".asc/artifacts/App.xcarchive" \  --config ".asc/distribution/config.json" \  --plan ".asc/distribution/plan.json" \  --state-dir ".asc/distribution/runs" \  --output json

Inspect ready, planHash, signing validity, destination, and the complete ordered effects inventory. Resolve blockers and create a new plan when ready is false. Do not infer readiness from exit code alone.

3. Apply the exact authorized plan

After approval of the exact effects, pass the full 64-character hash:

PLAN_HASH="$(jq -er '.planHash' ".asc/distribution/plan.json")"asc distribute apply \  --plan ".asc/distribution/plan.json" \  --confirm "$PLAN_HASH" \  --output json

Missing, malformed, or unequal confirmation is rejected before side effects. Success means publication and live fetch verification completed; it does not mean a device installed or launched the app.

4. Inspect, resume, and verify

Use the returned runId:

asc distribute status --run "RUN_ID" --state-dir ".asc/distribution/runs" --output jsonasc distribute resume --run "RUN_ID" --state-dir ".asc/distribution/runs" --output jsonasc distribute verify --run "RUN_ID" --state-dir ".asc/distribution/runs" --timeout 30s --output json

status is local-only and succeeds for running, recoverable, and blocked runs; branch on typed fields rather than prose. resume revalidates durable evidence before retrying and never blindly repeats a remote write. verify is read-only but performs live fetches. Add --device "DEVICE_SELECTOR" only when the user asks to observe the matching installed bundle, version, and build on a connected device; this observation does not prove IPA byte identity.

The exact private install URL is a bearer credential stored only in the owner-private link artifact reported by the completed run. Share it only with the intended tester through an approved private channel.

Lower-level IPA workflow

Use this lane when signing and export are already complete. Pass the exact bundleDir returned by prepare to publish:

asc distribute inspect --ipa ".asc/artifacts/App.ipa" --output jsonasc distribute prepare --ipa ".asc/artifacts/App.ipa" --channel "pull-request-42" --output jsonasc distribute publish \  --bundle-dir ".asc/distribution/com.example.app/1.2-42-IPA_SHA_PREFIX" \  --endpoint "https://objects.example.com" \  --region "auto" \  --bucket "ios-builds" \  --prefix "team/app" \  --receipt ".asc/publishes/app-1.2-42.json" \  --link-path ".asc/publishes/app-1.2-42-link.json" \  --output json

inspect omits raw device UDIDs unless --include-devices is explicitly needed. prepare never overwrites a bundle and reuses only an exact equivalent. Private publish is the default and writes exact presigned links only to the mode-0600 link artifact. Public publication is a separate explicit lane using --access public --public-base-url; it assumes anonymous reads are already configured and never changes storage policy.