probe

probe is a skill for Claude Code, Codex from nikzlabs/shipit. It costs 28 tokens per session (747 once invoked), scanned A, original, Apache-2.0.

A guide to running a test-plugin probe and understanding the JSON report it produces. The probe checks how a plugin is installed, configured, supplied with credentials, and run.

In plain words
What is it for?
Use it to run a read-only plugin check, optionally increment its shared counter, and test HTTPS access to the declared host.
Why use it?
It shows which report fields verify the plugin's documented behavior, including project location, settings, credentials, and network access.

Skill for Claude CodeCodex

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/nikzlabs/shipit/probe
Any agent
npx skills add nikzlabs/shipit --skill probe
Clone the repo
git clone --depth 1 https://github.com/nikzlabs/shipit

Made for: Claude Code, Codex.

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 probe

README.md
[![agentmods](https://agentmods.dev/badge/skills/nikzlabs/shipit/probe.svg)](https://agentmods.dev/skills/nikzlabs/shipit/probe)
Your own site
<a href="https://agentmods.dev/skills/nikzlabs/shipit/probe"><img src="https://agentmods.dev/badge/skills/nikzlabs/shipit/probe.svg" alt="Measured on agentmods" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 747 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 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 $0.00028 $0.00747
Opus 5 $0.00014 $0.00374
Sonnet 5 $0.00006 $0.00149
Haiku 4.5 $0.00003 $0.00075

Measured 3d ago against content hash 6199139f26a2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

probe 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 3d 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.

test-plugin/skills/probe/SKILL.md · 33 lines

What it actually says

The probe report

This skill ships with ShipIt's test plugin (docs/262). If you can read this text through your skill listing, skills materialization (req 22) works: the file was copied from the plugin checkout into your backend's discovery root under a plugins--<alias>--probe namespace.

Run probe in the project workspace. It prints one JSON report and mutates nothing. Flags: --bump increments the shared counter before reporting; --host-check also tests HTTPS egress to the declared host (example.com).

Field Verifies
cwd CLI runs with cwd = the project workspace (req 21)
mode / env.SHIPIT_PLUGIN_COMMIT the self/consumer discriminator: a consumer generation carries its exact commit; repo: self runs the live tree, no commit (reqs 15, 27)
credential.set PROBE_TOKEN injected for this command only (req 23)
settings.greeting the validated settings file (req 26), and which side wrote it: the consuming project's overrides.settings is hello from the consuming project, the manifest's default is hello from the probe. Reading the default under this repo's own shipit.yaml, which sets the override, means the consumer half was ignored (nikzlabs/shipit#2298 finding 2)
project.readable the workspace handle (req 21)
state.counter shared state with the probe service — probe --bump, then reload its page: same number (reqs 17, 18)
checkout.writable this surface's own mount — not the self/consumer signal (read mode), but it does check the rule directly: the plugin's tree is writable exactly when it is the project, so a consumer generation reports false and repo: self reports true (reqs 7, 15, 27). On the service surface it measures this fragment's own .:/app, which ShipIt forces read-only for a tracked generation and leaves as declared under repo: self
install.matchesActiveCommit install ran for the active generation; null under self-use, which has no generations (req 7)
dependency.project / .plugin a real dependency loads from each mount of the tree, reported per root because /plugin and /project are separate mounts even when they are one tree. Under repo: self the CLI must show both resolved: true, used: true — the working tree's own agent.install prepares the tree the CLIs and services run out of (req 27); the service shows plugin: resolved false, since its fragment mounts only its own directory at /app. This is the one field that would have caught nikzlabs/shipit#2298 (test-plugin/README.md has the full table)

The probe service renders the same report from the service surface at its preview URL, with a counter button and an Agent Interface SDK section: it awaits window.shipit.ready, checks embedded, and its "Send counter to agent" button exercises the browser-to-agent path (req 3).

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. 3d ago First seen · 33 lines · 28 tokens per session scan A 6199139f26a2

Subscribe to this mod's changes

probe is a skill published in the GitHub repository nikzlabs/shipit (6 stars, last pushed 4d ago), licensed Apache-2.0. It adds 28 tokens to every session and 747 once invoked, about $0.0001 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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