callkit SKILL.md skillA
callkit from jordancoin/ios-skills-collection is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jordancoin/ios-skills-collection/callkit@git:20260329.893209fPins git:20260329.893209f in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jordancoin/ios-skills-collection
- Path
skills/dpearson2699--callkit/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260329.893209f, committed Mar 29, 2026
- Size
- 14,557 bytes
- Repository stars
- 6
- License
- a license file GitHub does not identify
Implement VoIP calling with CallKit and PushKit. Use when building incoming/outgoing call flows, registering for VoIP push notifications, configuring CXProvider and CXCallController, handling call actions, coordinating audio sessions, or creating Call Directory extensions for caller ID and call blocking.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# CallKit Build VoIP calling features that integrate with the native iOS call UI using CallKit and PushKit. Covers incoming/outgoing call flows, VoIP push registration, audio session coordination, and call directory extensions. Targets Swift 6.3 / iOS 26+. ## Contents - [Setup](#setup) - [Provider Configuration](#provider-configuration) - [Incoming Call Flow](#incoming-call-flow) - [Outgoing Call Flow](#outgoing-call-flow) - [PushKit VoIP Registration](#pushkit-voip-registration) - [Audio Session Coordination](#audio-session-coordination) - [Call Directory Extension](#call-directory-extension) - [Common Mistakes](#common-mistakes) - [Review Checklist](#review-checklist) - [References](#references) ## Setup ### Project Configuration 1. Enable the **Voice over IP** background mode in Signing & Capabilities 2. Add the **Push Notifications** capability 3. For call directory extensions, add a **Call Directory Extension** target ### Key Types | Type | Role | |---|---| | `CXProvider` | Reports calls to the system, receives call actions | | `CXCallController` | Requests call actions (start, end, hold, mute) | …
Read the whole file at its exact version.
How to install
mdr add jordancoin/ios-skills-collection/callkit@sha256:44db66f38a98031eThe line at the top of this page pins the label git:20260329.893209f, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_nujaun72kh4jmdnd)
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Versions
The registry has recorded 1 version of this file, committed on Mar 29, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (14557 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
jordancoin/ios-skills-collection · 6 stars · license a license file GitHub does not identify · pushed 2026-09-10 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_nujaun72kh4jmdnd GET https://markdownregistry.com/api/v1/resolve?ref=jordancoin/ios-skills-collection/callkit GET https://markdownregistry.com/api/v1/blob/44db66f38a98031ec56e8fb916f575c99d085afe9c5e577429201662a5bab8ae
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.