adcontextprotocol/adcp-client · skills/build-holdco-agent/SKILL.md

build-holdco-agent skillA

build-holdco-agent is agent-read markdown (skill) from adcontextprotocol/adcp-client: Use when building an AdCP agency / holdco hub — one server hosting multiple specialism agents (governance + brand-rights + property-lists, etc.) with per-tenant data isolation. Distinct from `skills/build-seller-agent/` (single-specialism) and `decisioning-platform-multi-tenant.ts` (host-routed tenancy)..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add adcontextprotocol/adcp-client/build-holdco-agent@git:20260731.7273918
Exact content
mdr add adcontextprotocol/adcp-client/build-holdco-agent@sha256:9c04334e2d922d7e

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_b3vipvrq3wsaxw64.svg)](https://markdownregistry.com/a/art_b3vipvrq3wsaxw64)

0 badge views in 30 days

Versions

versioncommittedcommitsizeaudit
git:20260731.7273918 latest2026-07-31 7273918 19,526 BA view · diff
git:20260503.5118d4a2026-05-03 5118d4a 17,435 BA view · diff
git:20260503.91c1ff82026-05-03 91c1ff8 16,898 BA view · diff
git:20260503.018f9cd2026-05-03 018f9cd 16,597 BA view · diff
git:20260503.cddfbf42026-05-03 cddfbf4 16,469 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (19526 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

GitHub

adcontextprotocol/adcp-client · 18 stars · license Apache-2.0 · pushed 2026-09-18 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_b3vipvrq3wsaxw64
GET https://markdownregistry.com/api/v1/resolve?ref=adcontextprotocol/adcp-client/build-holdco-agent
GET https://markdownregistry.com/api/v1/blob/9c04334e2d922d7e76a902116d732bcdea02756acaabc92c6b93187a3ac69a22

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.