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.
npx skills add cintia09/CodeNook --skill config-validategit clone --depth 1 https://github.com/cintia09/CodeNookWrote 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.
[](https://agentmods.dev/skills/cintia09/codenook/config-validate)<a href="https://agentmods.dev/skills/cintia09/codenook/config-validate"><img src="https://agentmods.dev/badge/skills/cintia09/codenook/config-validate/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/cintia09/codenook/config-validate"><img src="https://agentmods.dev/badge/skills/cintia09/codenook/config-validate.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00000 | $0.00399 |
| Opus 5.5 | $0.00000 | $0.00160 |
| Sonnet 5.5 | $0.00000 | $0.00080 |
| Haiku 4.5 | $0.00000 | $0.00040 |
Grade A, and why
config-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 2mo 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.
What it actually says
config-validate (builtin skill)
Role
Field-level validator for merged CodeNook configs (output of config-resolve).
Checks types, ranges, enums; emits warnings for deprecated keys. Separate
from config-resolve's top-key whitelist (which is about routing only).
CLI
validate.sh --config <merged.json> [--schema <config-schema.yaml>] [--json]
--configrequired; must be valid JSON object.--schemadefaults to the packagedconfig-schema.yamlshipped alongside this SKILL.--jsonswitches stdout to{ ok, errors, warnings }(stderr still carries human-readable lines).
Exit codes
| code | meaning |
|---|---|
| 0 | no errors (warnings permitted) |
| 1 | at least one validation error |
| 2 | usage error (missing/bad flags, missing files) |
Error shape (--json)
{
"ok": false,
"errors": [{ "path": "models.default", "msg": "must be at least 1 char(s)" }],
"warnings": [{ "path": "legacy_router", "msg": "deprecated key" }]
}
Schema DSL
See config-schema.yaml header comments. Supports string|integer|object,
required, min_length, min, enum, nested fields. Unknown top-level
keys are tolerated (routing-layer decides those); only entries in the
schema's deprecated: list emit warnings.
Notes
- M1 scope: enough coverage for DoD fields (
models.default,hitl.mode,concurrency.max_parallel). Grow the schema as subsystems land. - M5 will layer plugin-specific schemas on top (see implementation.md §M5.2).
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 2mo ago First seen · 52 lines · 0 tokens per session scan A 9f07c6fd8434
config-validate is a skill published in the GitHub repository cintia09/CodeNook (5 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 399 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 2026-08-31.
config-validate compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| config-validatecintia09/CodeNook | Skill | 5 | 1mo ago | MIT | A | 0 | Claude Code, Codex |
| systematic-debuggingopen-metadata/OpenMetadata | Skill | 16k | today | Apache-2.0 | A | 37 | Claude Code |
| log-error-digestzebbern/claude-code-guide | Skill | 4.7k | 2d ago | MIT | A | 71 | Claude Code, Codex |
| incident-response-incident-responsermyndharis/antigravity-skills | Skill | 2.0k | yesterday | MIT | A | 36 | Claude Code, Codex |
| cwv-optimizeradobe/skills | Skill | 321 | today | Apache-2.0 | A | 112 | Claude Code |
| ci-fixersipyourdrink-ltd/bernstein | Skill | 1.2k | today | Apache-2.0 | A | 15 | Claude Code, Codex |
| diagnosing-missing-recordingsPostHog/posthog | Skill | 41k | today | none | A | 76 | Claude Code, Codex |