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Every Customer.io action a marketer or ops engineer takes — campaigns, broadcasts, segments, deliveries, exports, suppressions, Reverse-ETL — wrapped in named verbs, backed by a local SQLite cache, and served through a bundled MCP server. Trigger phrases: `use customer-io`, `run customer-io`, `trigger a customer.io broadcast`, `send a customer.io transactional message`, `export a customer.io segment`, `check customer.io delivery health`, `audit customer.io suppressions`, `what fraction of segmen
Passed 14 of 18 test cases with the skill, and 2 of 18 without it.
and 21 more in the full report
15 fixed3 passed either way5 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 14 test cases the skill fixed. Same model, same prompt, with and without the skill.
We need a CLI command that saves delivery triage details straight to a file path at /tmp/triage-report.json using atomic writing. What flag handles routing output to a path?
| Checked | Without skill | With skill |
|---|---|---|
| Uses the --deliver flag to route command output | Missed | Passed |
| Formats the target path using the file scheme prefix | Missed | Passed |
The instructions your model reads when the skill loads.
This skill drives the customer-io-pp-cli binary. You must verify the CLI is installed before invoking any command from this skill. If it is missing, install it first:
$HOME/.local/bin on macOS/Linux and %LOCALAPPDATA%\Programs\PrintingPress\bin on Windows:
npx -y @mvanhorn/printing-press-library install customer-io --cli-only
customer-io-pp-cli --version$PATH for the agent/runtime that will invoke this skill.If the npx install fails (no Node, offline, etc.), fall back to a direct Go install (requires Go 1.26.6 or newer):
go install github.com/mvanhorn/printing-press-library/library/marketing/customer-io/cmd/customer-io-pp-cli@latest
If --version reports "command not found" after install, the runtime cannot see the binary directory on $PATH. Do not proceed with skill commands until verification succeeds.
Reach for this CLI when you need to do anything in Customer.io that's tedious in the web UI: bulk suppressions with an audit trail, journey funnels cross-cut by segment, customer-360 timelines for incident triage, broadcast pre-flight before a high-stakes send, or Reverse-ETL health checks. It is also the right tool when an agent needs to drive Customer.io — the bundled MCP server exposes the same verbs over stdio and HTTP transports. For raw event ingestion (the Track API) or per-source CDP write keys, prefer one of the official server-side SDKs.
These capabilities aren't available in any other tool for this API.
campaigns funnel — Render a step-by-step journey funnel (sent → delivered → opened → clicked → converted) for one campaign, optionally cross-cut by segment.
Reach for this when an agent is asked 'what fraction of segment X completed journey Y' — the answer is one query against synced data, not two exports and a spreadsheet.
customer-io campaigns funnel cmp_482 --segment seg_19 --since 30d --json
segments overlap — Compute pairwise and multi-way Venn diagrams of segment memberships from the local store.
Use when validating audience design — 'are my churned-risk and high-value segments overlapping?' — without exporting twice.
test cases passed, vs 2 / 18 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.