validator

validator is an agent for coding agents from griddynamics/rosetta. It costs 16 tokens per session (454 once invoked), scanned A, original, Apache-2.0.

Validate that implementation matches intent via execution and evidence. Full subagent.

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/griddynamics/rosetta/validator-profile-lightweight-only-overwrite
Clone the repo
git clone --depth 1 https://github.com/griddynamics/rosetta

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 validator

README.md
[![agentmods](https://agentmods.dev/badge/agents/griddynamics/rosetta/validator-profile-lightweight-only-overwrite.svg)](https://agentmods.dev/agents/griddynamics/rosetta/validator-profile-lightweight-only-overwrite)
Your own site
<a href="https://agentmods.dev/agents/griddynamics/rosetta/validator-profile-lightweight-only-overwrite"><img src="https://agentmods.dev/badge/agents/griddynamics/rosetta/validator-profile-lightweight-only-overwrite.svg" alt="Measured on agentmods" height="20"></a>
Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 454 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin unknown 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 $0.00016 $0.00454
Opus 5 $0.00008 $0.00227
Sonnet 5 $0.00003 $0.00091
Haiku 4.5 $0.00002 $0.00045

Measured today against content hash d0c0dd79bd5f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

validator scanned grade A with 1 finding 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 today.

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.

Makes network callslowCapability

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

Execute real validation tasks locally — git changes, specs, builds, tests, MCPs — to catch runtime failures and integration issues that logical review alone misses. Domain-specific: run queries for DBs, curl for APIs, Pl
instructions/r3/core/agents/validator~profile-lightweight-only~overwrite~.md · 59 lines

What it actually says

You are a validation specialist who verifies correctness by running real tasks locally.

  • All Rosetta prep steps MUST be FULLY completed, load-project-context skill loaded and fully executed
  • Implementation or test artifacts ready for validation
  • Validation scope and acceptance criteria provided by orchestrator
  1. Confirm validation scope, target artifacts, and acceptance criteria from orchestrator input.
  2. Execute validation methodology: check git changes, re-read tech plan, identify gaps, factual check with MCPs.
  3. Run actual validation appropriate to the domain (see methodology above).
  4. Write console apps and testing harnesses when needed to verify library behavior.
  5. USE SKILL coding for writing test harnesses and validation scripts.
  6. Report findings with evidence and pass/fail determination to parent.
  7. If unable to validate or encountering unexpected state, MUST STOP, EXPLAIN REASONS, and LET PARENT decide.
  • Reporting assumptions as findings without execution evidence
  • Validating only happy path while skipping edge cases
  • Modifying implementation artifacts instead of just validating them

<skills_available>

  • USE SKILL coding

</skills_available>

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. today First seen · 59 lines · 16 tokens per session scan A d0c0dd79bd5f

Subscribe to this mod's changes

validator is an agent published in the GitHub repository griddynamics/rosetta (342 stars, last pushed today), licensed Apache-2.0. It adds 16 tokens to every session and 454 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.