build-holdco-agent SKILL.md skillA
build-holdco-agent from adcontextprotocol/adcp-client is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add adcontextprotocol/adcp-client/build-holdco-agent@git:20260731.7273918Pins git:20260731.7273918 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- adcontextprotocol/adcp-client
- Path
skills/build-holdco-agent/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260731.7273918, committed Jul 31, 2026
- First version recorded
- May 3, 2026
- Size
- 19,526 bytes
- Repository stars
- 18
- License
- Apache-2.0
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).
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
# Build an Agency / Holdco Hub Agent ## What you're building One AdCP server, multiple specialism interfaces, multiple tenants whose data never crosses. The agency holdco shape: a parent company hosts governance, brand-rights, property-lists, and sometimes signals, all on one endpoint, with per-operator tenant routing so each operating company sees only its own data. Distinct from two adjacent patterns — pick by deployment shape: | Pattern | Surface | When | | --------------------------------------------------- | ------------------------------------------------------------------ | ------------------------------------------------------------------- | | **Single-specialism, single-tenant** | `skills/build-seller-agent/`, `skills/build-signals-agent/`, etc. | One agent, one role, one tenant | …
Read the whole file at its exact version.
How to install
mdr add adcontextprotocol/adcp-client/build-holdco-agent@sha256:9c04334e2d922d7eThe line at the top of this page pins the label git:20260731.7273918, 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_b3vipvrq3wsaxw64)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between May 3, 2026 and Jul 31, 2026, about one every 22 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260731.7273918 latest | 2026-07-31 | 7273918 | 19,526 B | A | view · diff |
| git:20260503.5118d4a | 2026-05-03 | 5118d4a | 17,435 B | A | view · diff |
| git:20260503.91c1ff8 | 2026-05-03 | 91c1ff8 | 16,898 B | A | view · diff |
| git:20260503.018f9cd | 2026-05-03 | 018f9cd | 16,597 B | A | view · diff |
| git:20260503.cddfbf4 | 2026-05-03 | cddfbf4 | 16,469 B | A | view |
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 (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
adcontextprotocol/adcp-client · 18 stars · license Apache-2.0 · pushed 2026-11-05 · 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
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.