Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add OrbiAds/Orbiads-GAM-MCP --skill homepage-takeovergit clone --depth 1 https://github.com/OrbiAds/Orbiads-GAM-MCPWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/orbiads/orbiads-gam-mcp/homepage-takeover)<a href="https://agentmods.dev/skills/orbiads/orbiads-gam-mcp/homepage-takeover"><img src="https://agentmods.dev/badge/skills/orbiads/orbiads-gam-mcp/homepage-takeover/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/orbiads/orbiads-gam-mcp/homepage-takeover"><img src="https://agentmods.dev/badge/skills/orbiads/orbiads-gam-mcp/homepage-takeover.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00071 | $0.02272 |
| Opus 5 | $0.00036 | $0.01136 |
| Sonnet 5 | $0.00014 | $0.00454 |
| Haiku 4.5 | $0.00007 | $0.00227 |
Grade A, and why
homepage-takeover scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 187 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Homepage Takeover — Custom Agency Skill (Worked Example)
This skill encodes our agency's house template for deploying a homepage takeover (HPTO): a fixed-flight sponsorship campaign that targets all homepage ad units, achieves 100% share of voice, and pairs every line item with companion roadblock creatives. It is a worked example for docs/custom-skills/README.md demonstrating how to write a custom skill on top of OrbiAds.
House Conventions
| Parameter | Value |
|---|---|
| Line item type | SPONSORSHIP |
| Priority | 4 (GAM sponsorship priority) |
| Delivery goal type | PERCENTAGE |
| Goal percentage | 100 (100% SOV) |
| Creative strategy | Roadblock: all sizes served together, same flight |
| Naming pattern | {Brand} — HPTO — {StartDate} (e.g. Renault — HPTO — 20260615) |
| Flight | Fixed start + end date, no auto-extension |
| Targeting | Ad unit: homepage root + all children; device: ALL |
Procedure
Follow these phases in order. Each maps to a step in workflow.yaml.
Phase 1 — Auth & Context Intake
Derive tenant and network from auth tools — never hardcode them.
| Step | MCP | CLI |
|---|---|---|
| Confirm connected user | check_credentials (standalone auth tool) |
orbiads auth status |
| Get tenant ID | get_my_tenant_id (standalone auth tool) |
orbiads auth status |
Gate: refuse to proceed if credentials are missing or GAM connection is not active.
Phase 2 — Inventory Discovery
List homepage ad units and confirm sizes before building any payload.
| Step | MCP | CLI |
|---|---|---|
| List homepage ad units | targeting(action="list_ad_units") |
orbiads inventory ad-units |
| List sizes on those units | inventory(action="list_ad_unit_sizes") |
orbiads inventory sizes |
| List existing placements | placements(action="list_placements") |
orbiads inventory placements |
Collect all adUnitId values whose path contains homepage (or whatever the tenant's root slug is). Confirm sizes — you will need them to match creative dimensions exactly.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 12d ago First seen · 187 lines · 71 tokens per session scan A ad8a07043320
homepage-takeover is a skill published in the GitHub repository OrbiAds/Orbiads-GAM-MCP (3 stars, last pushed 1mo ago), licensed MIT. It adds 71 tokens to every session and 2,272 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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