core-nfc SKILL.md skillA
core-nfc 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/core-nfc@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--core-nfc/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260329.893209f, committed Mar 29, 2026
- Size
- 15,113 bytes
- Repository stars
- 6
- License
- a license file GitHub does not identify
Read and write NFC tags using CoreNFC. Use when scanning NDEF tags, reading ISO7816/ISO15693/FeliCa/MIFARE tags, writing NDEF messages, handling NFC session lifecycle, configuring NFC entitlements, or implementing background tag reading in iOS apps.
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
# CoreNFC Read and write NFC tags on iPhone using the CoreNFC framework. Covers NDEF reader sessions, tag reader sessions, NDEF message construction, entitlements, and background tag reading. Targets Swift 6.3 / iOS 26+. ## Contents - [Setup](#setup) - [NDEF Reader Session](#ndef-reader-session) - [Tag Reader Session](#tag-reader-session) - [Writing NDEF Messages](#writing-ndef-messages) - [NDEF Payload Types](#ndef-payload-types) - [Background Tag Reading](#background-tag-reading) - [Common Mistakes](#common-mistakes) - [Review Checklist](#review-checklist) - [References](#references) ## Setup ### Project Configuration 1. Add the **Near Field Communication Tag Reading** capability in Xcode 2. Add `NFCReaderUsageDescription` to Info.plist with a user-facing reason string 3. Add the `com.apple.developer.nfc.readersession.formats` entitlement with the tag types your app reads (e.g., `NDEF`, `TAG`) 4. For ISO 7816 tags, add supported application identifiers to `com.apple.developer.nfc.readersession.iso7816.select-identifiers` in Info.plist ### Device Requirements NFC reading requires iPhone 7 or later. Always check for reader session availability before presenting NFC UI. …
Read the whole file at its exact version.
How to install
mdr add jordancoin/ios-skills-collection/core-nfc@sha256:a1a54c5857a7ae1bThe 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_eomteegtvvrv3anp)
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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 (15113 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_eomteegtvvrv3anp GET https://markdownregistry.com/api/v1/resolve?ref=jordancoin/ios-skills-collection/core-nfc GET https://markdownregistry.com/api/v1/blob/a1a54c5857a7ae1baa40a513131f86dc051ccc288f7a6fb6e4859f640aa05ed0
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.