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/vercel-labs/dev3000/deepsecnpx skills add vercel-labs/dev3000 --skill deepsecgit clone --depth 1 https://github.com/vercel-labs/dev3000What 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 | $0.00041 | $0.00912 |
| Opus 5 | $0.00020 | $0.00456 |
| Sonnet 5 | $0.00008 | $0.00182 |
| Haiku 4.5 | $0.00004 | $0.00091 |
Grade A, and why
deepsec 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 2d 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 — 58 lines — stays where its author put it; the contents beside it link to each section on GitHub.
DeepSec Dev3000 Runbook
Use this skill to turn the manual DeepSec workflow into a repeatable dev3000 run against the current Vercel project checkout.
Operating Policy
- Work from the real project checkout at
/workspace/repo. - Do not write AI credentials into
.deepsec/.env.localor any tracked file. The dev3000 runtime passes AI Gateway credentials through the process environment. - Default dev3000 runs are a bounded first pass. Do not run an unbounded
processorrevalidatecommand unless the user explicitly asks for a full DeepSec scan in run-specific instructions. - Keep generated scan state in the locations DeepSec already gitignores. Commit only the durable setup/context files and human-readable findings report.
- Treat DeepSec as a coding agent with shell access. Do not run it on untrusted source inputs.
Default Flow
- Inspect the project shape:
- Read
README.mdif present. - Read
AGENTS.mdorCLAUDE.mdif present. - Skim representative files for auth, middleware, request handlers, data access, billing, webhooks, and security-sensitive boundaries.
- Read
- Initialize DeepSec if needed:
- If
.deepsec/is absent, runnpx --yes deepsec@latest init. - If
.deepsec/already exists, do not force overwrite it.
- If
- Install DeepSec workspace dependencies:
- Run
corepack pnpm installfrom.deepsec/. - Ensure the Claude Agent SDK native binary that DeepSec actually uses is available. Do not run a Claude Code postinstall; DeepSec uses
@anthropic-ai/claude-agent-sdk. - If
corepack pnpmis unavailable, runpnpm installonly after confirmingpnpmexists.
- Run
- Fill the generated project context:
- Read
.deepsec/node_modules/deepsec/SKILL.md. - Read
.deepsec/data/<id>/SETUP.md. - Replace
.deepsec/data/<id>/INFO.mdwith concise project-specific context. - Keep
INFO.mdto roughly 50-100 lines. - Use 3-5 examples per section. Name local primitives such as auth helpers, middleware, database clients, webhook handlers, and privileged APIs.
- Do not include line numbers, generic CWE lists, or broad framework summaries.
- Read
- Run the scan:
- Run
corepack pnpm deepsec scanfrom.deepsec/.
- Run
- Run bounded AI processing:
- Default command:
corepack pnpm deepsec process --limit 25 --concurrency 2 --batch-size 3. - If the candidate set is below the limit, state that all discovered candidates were processed.
- If the user explicitly requested a full run, use the requested limit/concurrency or omit
--limit. - If the process command fails, stop and report the failure. Do not generate a manual fallback report from regex candidates.
- Default command:
- Generate the findings report:
- Run
corepack pnpm deepsec export --format md-dir --out ./findings. - If there are no findings, create
.deepsec/findings/README.mdsummarizing that this bounded pass found no findings and include the exact commands that were run.
- Run
- Summarize the run:
- Include commands run, project id, limit/concurrency, and whether the report contains findings.
- Do not include a "Next Steps - Full Scan" section by default.
- Only include a follow-up scan section if DeepSec reports unprocessed candidates or the user explicitly asked about deeper coverage. Label it "Optional Deeper Follow-Up" and explain exactly how it differs from the completed run.
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.
- 2d ago First seen · 58 lines · 41 tokens per session scan A d09b74a1ca27
deepsec is a skill published in the GitHub repository vercel-labs/dev3000 (1,573 stars, last pushed 6d ago), licensed MIT. It adds 41 tokens to every session and 912 once invoked, about $0.0002 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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