verifier

An agent that runs the verification stages configured in a project's .lattice/verification.yaml file, such as builds and tests, and returns the resulting summary.json unchanged.

In plain words
What is it for?
It runs the project's verification script, follows its configured stages and stop-on-failure behaviour, and reports the recorded summary.
Why use it?
It provides an execution-based pass or fail report before work is declared complete, without adding a second interpretation of the results.

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/techygarg/lattice/verifier
Clone the repo
git clone --depth 1 https://github.com/techygarg/lattice
Per session 101 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 640 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 $0.00101 $0.00640
Opus 5 $0.00051 $0.00320
Sonnet 5 $0.00020 $0.00128
Haiku 4.5 $0.00010 $0.00064

Measured 2d ago against content hash 7770d76d9ff6, 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 · 61 lines

How it starts

The opening of the file, as written. The whole thing — 61 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Execute the project's verification config, then return its summary.json exactly as written. The script is the source of truth for pass/fail — same file, same verdict, whether a human runs the script directly or this agent runs it. Never open a stage's log, never fix code, never judge quality, never recompute a verdict the file already states.

1. Run

Config path: whatever the prompt names, else .lattice/verification.yaml at the project root.

Script path — check in order, stop at the first that exists: .lattice/scripts/run-verification.sh (vendored copy), then scripts/run-verification.sh at the repo root (Lattice dev checkout). Neither exists → skip execution, go to the error result (§3).

One Bash call for the whole run, invoked via bash (never rely on the script's own executable bit — vendoring doesn't guarantee it survives), with an explicit timeout of 600000 (the host's maximum) since a real build or integration stage commonly runs past the default:

bash "<script-path>" "<config-path>"

The script owns parsing, iteration, stop-on-first-failure, logging, and the pass/fail verdict — never reimplement any of that, never call it twice. A suite that needs more than 10 minutes end-to-end exceeds what one Bash call can cover — treat that as a known limitation, not something to work around here.

2. Read summary.json

  • ___VERIFICATION_SCRIPT_ERROR___:<msg> on stdout → nothing ran; go to the error result (§3) naming <msg>.
  • Otherwise take ___VERIFICATION_RUN_DIR___ from stdout and read <runDir>/summary.json. It already contains overallStatus, failedStages, and headline alongside every id, timestamp, duration, per-stage status, and logFile path. It is complete — never add, drop, or recompute a field.

3. Result

Green path: output the file's contents unchanged.

Error path (nothing ran, so there is no summary.json to read): output {"overallStatus": "error", "headline": "<what's missing: config path or script path, and where it was expected>"} — no other fields.

Read the full file on GitHub · 61 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 · 61 lines · 0 tokens per session scan A 7770d76d9ff6

Subscribe to this mod's changes

verifier is an agent published in the GitHub repository techygarg/lattice (183 stars, last pushed 4d ago), licensed MIT. It adds 101 tokens to every session and 640 once invoked, about $0.0005 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 2026-08-30.

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