fest-validate

fest-validate is a command for coding agents from Obedience-Corp/festival. It costs 10 tokens per session (107 once invoked), scanned A, original, Apache-2.0.

A command for checking a festival’s structure and reporting problems such as missing files, unfinished placeholders, invalid names, or missing quality checks.

In plain words
What is it for?
Use it to validate a festival and, when needed, request automatic fixes for the reported structural issues.
Why use it?
It catches planning errors before they disrupt execution or leave required work undefined.

Command

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 commands/obedience-corp/festival/fest-validate
Clone the repo
git clone --depth 1 https://github.com/Obedience-Corp/festival

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 fest-validate

README.md
[![agentmods](https://agentmods.dev/badge/commands/obedience-corp/festival/fest-validate.svg)](https://agentmods.dev/commands/obedience-corp/festival/fest-validate)
Your own site
<a href="https://agentmods.dev/commands/obedience-corp/festival/fest-validate"><img src="https://agentmods.dev/badge/commands/obedience-corp/festival/fest-validate.svg" alt="Measured on agentmods" height="20"></a>
Per session 10 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 107 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 5.1 $0.00010 $0.00107
Opus 5 $0.00005 $0.00053
Sonnet 5 $0.00002 $0.00021
Haiku 4.5 $0.00001 $0.00011

Measured 5d ago against content hash 8850b9c5cffc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

fest-validate 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 5d 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.

.cursor-plugin/commands/fest-validate.md · 25 lines

What it actually says

Validate Festival

Run validation to catch structural issues, missing files, and unfilled markers.

fest validate

If issues are found, present them clearly and offer to fix automatically:

fest validate --fix

Common issues:

  • Missing SEQUENCE_GOAL.md files
  • Unfilled REPLACE markers in generated files
  • Non-compliant naming patterns
  • Missing quality gate tasks
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. 5d ago First seen · 25 lines · 10 tokens per session scan A 8850b9c5cffc

Subscribe to this mod's changes

fest-validate is a command published in the GitHub repository Obedience-Corp/festival (50 stars, last pushed 2d ago), licensed Apache-2.0. It adds 10 tokens to every session and 107 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 2026-08-30.