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 navig-run/core --skill summarize-urlgit clone --depth 1 https://github.com/navig-run/coreWrote 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/navig-run/core/summarize-url)<a href="https://agentmods.dev/skills/navig-run/core/summarize-url"><img src="https://agentmods.dev/badge/skills/navig-run/core/summarize-url.svg" alt="Measured on agentmods" 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 | $0.00021 | $0.00703 |
| Opus 5 | $0.00010 | $0.00351 |
| Sonnet 5 | $0.00004 | $0.00141 |
| Haiku 4.5 | $0.00002 | $0.00070 |
Grade A, and why
summarize-url 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 8d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- curl (for fetching web content) The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
What ships with it
1 file 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.
- 8d ago First seen · 109 lines · 21 tokens per session scan A 8d40e71b67f8
summarize-url is a skill published in the GitHub repository navig-run/core (5 stars, last pushed yesterday), with no licence file. It adds 21 tokens to every session and 703 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 2026-08-31.
Other skills, from other repositories
kastell-ops
Kastell CLI patterns, architecture, anti-patterns, and decision trees. Use automatically when working in Kastell codebase or when asked about Kastell server infrastructure, security audit, hardening, lock, provision, or provider management.
kastell-scaffold
Generate new Kastell components from templates. Creates boilerplate for CLI commands, audit checks, providers, and MCP tools following current architecture (commands thin, core fat, adapters dispatch).
kastell-research
Read-only Kastell codebase exploration. Use when tracing a bug across files, mapping callsites before refactoring, or exploring unfamiliar subsystems. Runs in isolated context with Explore agent.
kastell
Server security auditing, hardening, and fleet management. 457 security checks across 30 categories (SSH, Firewall, Docker, TLS, HTTP Headers), CIS/PCI-DSS/HIPAA compliance mapping, 24-step production hardening, and 13 MCP tools. Supports Hetzner, DigitalOcean, Vultr, and Linode with Coolify, Dokploy, and bare VPS…
db-query
Query the JHT SQLite DB (positions, applications, stats). Use it whenever you need position status, per-agent queues, scores, match rate, or record counts. DB path from $JHTDB, fallback /jhthome/jobs.db.
cv-disk-audit
Healthcheck periodico (Dottore) per riconciliare CV su disk e cvpdfpath nel DB. Identifica orfani (file su disk senza riga DB) e ghost (riga DB con cvpdfpath che punta a file inesistente). Notifica il Capitano sui mismatch così l'utente non perde top PASS invisibili e non vede "CV da scrivere" per CV già scritti.