running-acceptance-probe

running-acceptance-probe is a skill for Claude Code from Acendas/shipyard. It costs 17 tokens per session (1,999 once invoked), scanned B, original, MIT.

A check that runs one end-to-end command to demonstrate that a task works in a clean environment. Unlike an isolated unit test, it checks that the pieces are connected and produce visible results.

In plain words
What is it for?
Use it to verify new API endpoints, command-line commands, library functions, and other completed tasks with a repeatable smoke test.
Why use it?
A test can pass while the real wiring is incomplete or replaced by a stub. This probe provides a direct signal that the user-facing path works.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: mentions subagents.

Part of the shipyard plugin — 32 skills, 7 agents, 4 hooks shipped together

Install

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.

agentmods
npx agentmods add skills/acendas/shipyard/running-acceptance-probe
Any agent
npx skills add Acendas/shipyard --skill running-acceptance-probe
Clone the repo
git clone --depth 1 https://github.com/Acendas/shipyard

Made for: Claude Code.

Or install shipyard, the plugin that ships this one along with the rest of its 32 skills, 7 agents, 4 hooks.

Wrote 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.

agentmods badge for running-acceptance-probe

README.md
[![agentmods](https://agentmods.dev/badge/skills/acendas/shipyard/running-acceptance-probe.svg)](https://agentmods.dev/skills/acendas/shipyard/running-acceptance-probe)
Your own site
<a href="https://agentmods.dev/skills/acendas/shipyard/running-acceptance-probe"><img src="https://agentmods.dev/badge/skills/acendas/shipyard/running-acceptance-probe.svg" alt="Measured on agentmods" height="20"></a>
Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,999 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00017 $0.01999
Opus 5 $0.00009 $0.01000
Sonnet 5 $0.00003 $0.00400
Haiku 4.5 $0.00002 $0.00200

Measured 6d ago against content hash 3a5a59381632, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade B, and why

running-acceptance-probe scanned grade B with 2 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 6d 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.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

| New API endpoint | `curl -fsS -X POST localhost:3000/api/users -d '{"name":"x"}' \| jq -e .id` |

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

| New API endpoint | `curl -fsS -X POST localhost:3000/api/users -d '{"name":"x"}' \| jq -e .id` |
plugins/shipyard/skills/running-acceptance-probe/SKILL.md · 142 lines

How it starts

The opening of the file, as written. The whole thing — 142 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Running an Acceptance Probe

A probe is the smoke-test command that demonstrates a task's wiring works end-to-end — distinct from unit/integration tests, which assert behavior in isolation. The probe is the most important reliability artifact in Shipyard 2.0: it is the difference between "tests pass against a stub" and "the thing actually works."

What Counts as an Acceptance Probe

A valid probe is a single shell command that:

  1. Exits 0 on success. Non-zero exit means the wiring failed.
  2. Produces observable output that demonstrates the change worked end-to-end. Empty output passing is rare and suspicious.
  3. Runs from a clean state — no prerequisite session-only setup.
  4. Completes in a bounded time — typically <60s, hard cap 5m.
  5. Is deterministic enough to run twice and get the same exit code.

Examples of good probes (per task type):

Task type Probe shape
New API endpoint curl -fsS -X POST localhost:3000/api/users -d '{"name":"x"}' | jq -e .id
New CLI subcommand node bin/mytool.mjs <new-subcommand> --help | grep -q "<expected text>"
Library function node -e 'const m = require("./dist/index.js"); if (!m.newFn) process.exit(1); console.log(m.newFn(42))'
Migration psql -c "SELECT column_name FROM information_schema.columns WHERE table_name='users' AND column_name='new_col'" | grep -q new_col
Refactor (no behavior change) npm run build && npm test -- --testPathPattern=touched-module
Frontend feature a Playwright check, or curl -fsS localhost:3000/the-new-page | grep -q "<expected element>"

Examples of bad probes:

  • npm test — that's a test suite, not a probe. Probes are narrower: they exercise this one feature's wiring.
  • echo done — produces no observable evidence.
  • cat <known-fixture>.json — doesn't exercise any new code.
  • An interactive command that needs user input.
  • A command that depends on state from earlier in the session.

The probe is authored alongside acceptance criteria (see authoring-acceptance-probe). This skill is about running one that already exists.

Read the full file on GitHub · 142 lines

Changes

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.

  1. 6d ago First seen · 142 lines · 17 tokens per session scan B 3a5a59381632

Subscribe to this mod's changes

running-acceptance-probe is a skill published in the GitHub repository Acendas/shipyard (2 stars, last pushed 24d ago), licensed MIT. It adds 17 tokens to every session and 1,999 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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