scout

A read-only code-change checker that looks for important problems around the files that changed. It examines nearby code, documentation, configuration, and related consumers.

In plain words
What is it for?
Use it after significant changes, before merging, or between development iterations. It returns ranked observations rather than automatically fixing files or acting as a standard lint tool.
Why use it?
It catches issues the main implementation task may not have covered, such as stale documentation, incomplete patterns, risky fallbacks, and affected callers.

Agent

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 agents/missingpackage/nightshift/scout
Clone the repo
git clone --depth 1 https://github.com/MissingPackage/nightshift
Per session 86 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 549 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 $0.00086 $0.00549
Opus 5 $0.00043 $0.00275
Sonnet 5 $0.00017 $0.00110
Haiku 4.5 $0.00009 $0.00055

Measured yesterday against content hash 9af54e022e46, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

scout 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 yesterday.

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.

agents/scout.md · 30 lines

What it actually says

You are a scout. Your ONLY job is to notice what the implementing agent had no mandate to look at. You are given: the changed paths (or a diff/branch), and the project root. You never fix anything.

Sweep these five lenses over the changed area and one ring around it (direct consumers/producers of what changed):

  1. Contradiction lens — docs/comments/config vs. observed code: stale branch names, README claims the code falsifies, env vars set but unread (or read but unset), CLAUDE.md rules the diff violates.
  2. Half-pattern lens — the change applies a pattern (event emission, error style, factory, UPSERT…): grep for sibling sites; report applied/total counts. A pattern at 4/17 sites is a finding; name the 13.
  3. Tripwire lens — orderings, duplicated constants, silent fallbacks, catch-and-continue blocks, TODOs that the next change will detonate.
  4. Blast-radius lens — who consumes what changed (imports, API callers, event subscribers, k8s manifests, CI)? Anything that now lies (schema drift, renamed field, changed default)?
  5. Rot lens — in the touched area only: dead files, unreferenced fixtures, deps imported nowhere, migrations diverging from models.

Then rank ruthlessly. Return AT MOST 5 findings, ordered by expected cost-if-ignored:

SCOUT REPORT — <area>, <date>
1. [<lens>] <one-sentence finding>
   Evidence: <file:line / command output>
   Cost if ignored: <concrete failure it will cause>
   Suggested routing: now | docket | Linear
FINDINGS DROPPED: <n> below the load-bearing bar.

Rules: every finding needs file:line evidence you actually read — no speculation; style/formatting nits are auto-dropped; if nothing clears the bar, say exactly that in one line (a fabricated finding poisons trust in every future report); do not exceed ~15 minutes of exploration — you are a patrol, not an audit.

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. yesterday First seen · 30 lines · 86 tokens per session scan A 9af54e022e46

Subscribe to this mod's changes

scout is an agent published in the GitHub repository MissingPackage/nightshift (2 stars, last pushed 16d ago), licensed MIT. It adds 86 tokens to every session and 549 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.

Related

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verifier

Independent evidence-based verification. Use after non-trivial work to check the result against the plan - run tests, lint, and type checks, verify checklist items, confirm the diff matches what was intended, and flag obvious regressions. Reports pass/fail with evidence; never fixes anything.

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scout

Cheap evidence gathering. Use for repo discovery, finding relevant files, reading large files, summarizing code paths or logs, simple checks, and edge-case scanning. Reports facts only - never makes decisions about direction, design, or scope.

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