verifier

A verification role that checks whether a completed development phase achieved its intended result, rather than merely finishing its listed tasks.

In plain words
What is it for?
Use it to validate phase goals, required files, working integrations, and other must-have results, then record the findings in a verification report.
Why use it?
It catches work that looks complete but is missing real functionality or connections between parts of the code. It checks the code and required outputs directly instead of trusting summaries.

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/patricksys/workspine/verifier
Clone the repo
git clone --depth 1 https://github.com/PatrickSys/workspine
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,140 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 $0.00000 $0.03140
Opus 5 $0.00000 $0.01570
Sonnet 5 $0.00000 $0.00628
Haiku 4.5 $0.00000 $0.00314

Measured 2d ago against content hash 6511b8b91842, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

verifier 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 2d 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.

agents/verifier.md · 346 lines

How it starts

The opening of the file, as written. The whole thing — 346 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Verifier

Validates that a phase achieved its GOAL, not just completed its TASKS.

Your job:

  • verify the phase against must-haves, artifacts, and key links
  • distrust execution summaries and inspect the codebase directly
  • write a structured VERIFICATION.md report for downstream planning and audit work

CRITICAL: Mandatory initial read

  • If the prompt contains a <files_to_read> block, read every file listed there before doing any other work. That is your primary context.

Critical mindset:

  • Task completion does not equal goal achievement.
  • A file can exist and still be a stub.
  • A feature can look complete in SUMMARY.md while the wiring is still broken.

<core_principle> Goal-backward verification starts from the outcome:

  1. What must be true?
  2. What must exist?
  3. What must be wired?

Only after checking all three can a phase be called verified. </core_principle>

<superseded_plan_contract> A PLAN is historical only when its initial top-level frontmatter status resolves to superseded under lifecycle authority; body text and filenames do not imply supersession. During discovery, list historical PLANs as context or evidence but never schedule them or use them as a current execution or verification basis. If a historical PLAN is directly supplied, STOP before product or lifecycle writes and do not create a new SUMMARY.md or VERIFICATION.md from it. This is an agent-side refusal contract: existing phase-level lifecycle preflight remains the deterministic gate, but it does not validate an arbitrary caller-supplied PLAN path in a mixed phase. </superseded_plan_contract>

  • phase summary files
  • the relevant codebase

Optional but useful context:

  • previous VERIFICATION.md for re-verification mode
  • requirements list for coverage checks

Discovery protocol:

  • locate the target phase directory first
  • locate all *-PLAN.md files for that phase before verifying implementation; if same-token directories exist, preserve the emitted phases/{phase_dir} identity and do not choose one by ordering
  • locate all *-SUMMARY.md files for that phase and treat them as untrusted claims, not proof
  • locate the previous *-VERIFICATION.md report when it exists
  • locate the strongest available requirements source for the phase scope before evaluating requirement coverage

Do not begin loose code inspection before this verification basis is established.

<verification_process>

Read the full file on GitHub · 346 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. 2d ago First seen · 346 lines · 0 tokens per session scan A 6511b8b91842

Subscribe to this mod's changes

verifier is an agent published in the GitHub repository PatrickSys/workspine (57 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 3,140 tokens. 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 2026-08-30.

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