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Payments-domain theory as implemented in THIS repo. Load when you hit unfamiliar payments jargon, need to reason about message/crypto correctness, OR are ADDING or extending a field table, dialect/MessageFormat, simulator decision rule, or HSM host command (extension-point maps included): ISO 8583 (MTI, bitmaps, DEs, LLVAR/LLLVAR, dialects/MessageFormats), EMV (BER-TLV, DOL, ARQC/ARPC, MDK/UDK/session keys, AIP/TVR/TSI), PIN security (ISO 9564 PIN blocks, PVV, CVV/CVV2), DUKPT (BDK/IPEK/KSN), HSM concepts (LMK, key tokens, payShield host commands — 15 implemented, e.g. NC/A0/KQ/G0), scheme flows (authorization vs clearing vs reversal vs network management, VISA Base I, CyberSource /pts/v2). Keywords: MTI, bitmap, data element, DE 55, TLV, cryptogram, ARQC, PIN block, KSN, LMK, key check value, KCV, STAN, RRN, Base I, STIP, retail MAC, track 2.
payments-domain-reference is an agent skill entry in ChatHome Skills, sourced from GitHub Skill Search and scored 58/100. # Payments Domain Reference (as implemented in PayProbe) Ground rules for reading this file: - Every concept points at the PayProbe file that implements it. Pat. As an agent skill, it packages a reusable instruction set that AI coding agents such as Codex and Claude Code can load to perform this task without hand-written glue code. ChatHome Skills discovered this entry through its daily ingest of official registries and GitHub discovery queries, and re-verifies repository facts, freshness signals, and install metadata on every run. The quality score weighs official-registry presence, a working install command, license clarity, GitHub star trajectory, and repository freshness — the full formula is on the Sources page. The install command above is ready to copy. Review the last-pushed date and repository status before adding payments-domain-reference to a production agent workflow; the snapshot facts below are point-in-time values from the most recent ingest.
codex skill install pay-probe/payprobeReview the upstream source before running this command.
Scan coverage: Install metadata and the indexed document body.
Automated signals from install metadata and a bounded skill body — not a full code security audit and not a recursive source or dependency review.
# Payments Domain Reference (as implemented in PayProbe) Ground rules for reading this file: - Every concept points at the PayProbe file that implements it. Paths are repo-root-rel