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 agentmods add skills/nvsecurity/nightvision-skills/api-discoverynpx skills add nvsecurity/nightvision-skills --skill api-discoverygit clone --depth 1 https://github.com/nvsecurity/nightvision-skillsWrote 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/nvsecurity/nightvision-skills/api-discovery)<a href="https://agentmods.dev/skills/nvsecurity/nightvision-skills/api-discovery"><img src="https://agentmods.dev/badge/skills/nvsecurity/nightvision-skills/api-discovery.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 | $0.00050 | $0.01640 |
| Opus 5 | $0.00025 | $0.00820 |
| Sonnet 5 | $0.00010 | $0.00328 |
| Haiku 4.5 | $0.00005 | $0.00164 |
Grade A, and why
api-discovery 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.
How it starts
The opening of the file, as written. The whole thing — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.
NightVision API Discovery
Use this skill when helping users generate OpenAPI specifications from their source code using nightvision swagger extract. API Discovery performs static analysis — no running application or compilation needed — and annotates the spec with source file paths and line numbers (Code Traceback) so that vulnerabilities found during DAST scans trace back to exact code locations.
Agent workflow
When a user asks to extract or document their API:
- Check prerequisites — verify the NightVision CLI is available (
nightvision --help) - Examine the repo — identify the backend language and web framework to determine the
--langflag and whether the framework is supported (see references/framework-support.md) - Run extraction — execute
nightvision swagger extractwith the appropriate flags. On success, the CLI prints"Swagger file extracted successfully."and writes the spec to the output path (default:openapi-spec.yml) - Review the output — read the generated spec to check completeness. Handle unresolved variables if
nv.configwas created alongside the spec - Compare coverage — if the user has an existing spec, run
nightvision swagger diffto show what was discovered vs. what was documented - Upload to target — attach the spec to a NightVision target for scanning
Related skills: Use scan-configuration for target/auth setup, ci-cd-integration for pipeline integration, scan-triage for interpreting scan results.
Language flags
| Language | Flag | Frameworks |
|---|---|---|
| Python | --lang python |
Django, DRF, Flask, Flask-RESTful, FastAPI |
| Java | --lang java |
Spring Boot, JAX-RS/Jersey, Micronaut, Java EE/Jakarta EE |
| JavaScript | --lang js |
Express, NestJS, Fastify |
| C# | --lang dotnet |
ASP.NET Core (controllers, minimal APIs) |
| Go | --lang go |
Gin, httprouter, net/http (experimental) |
| Ruby | --lang ruby |
Rails, Grape |
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.
- 5d ago First seen · 157 lines · 50 tokens per session scan A a46387698fd2
api-discovery is a skill published in the GitHub repository nvsecurity/nightvision-skills (3 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 50 tokens to every session and 1,640 once invoked, about $0.0003 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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