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 AgentSecOps/SecOpsAgentKit --skill detection-sigmagit clone --depth 1 https://github.com/AgentSecOps/SecOpsAgentKitWrote 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/agentsecops/secopsagentkit/detection-sigma)<a href="https://agentmods.dev/skills/agentsecops/secopsagentkit/detection-sigma"><img src="https://agentmods.dev/badge/skills/agentsecops/secopsagentkit/detection-sigma/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/agentsecops/secopsagentkit/detection-sigma"><img src="https://agentmods.dev/badge/skills/agentsecops/secopsagentkit/detection-sigma.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 | $0.00115 | $0.03699 |
| Opus 5.5 | $0.00046 | $0.01480 |
| Sonnet 5.5 | $0.00023 | $0.00740 |
| Haiku 4.5 | $0.00012 | $0.00370 |
Grade A, and why
detection-sigma 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 1mo 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.
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
13 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.
- assets/.gitkeep 221 B
- assets/compliance-rules/iso27001-logging.yml 3.1 KB
- assets/compliance-rules/nist-800-53-audit.yml 2.8 KB
- assets/compliance-rules/pci-dss-monitoring.yml 2.3 KB
- assets/rule-templates/credential-access.yml 1.8 KB
- assets/rule-templates/lateral-movement.yml 1.8 KB
- assets/rule-templates/persistence.yml 1.8 KB
- assets/rule-templates/privilege-escalation.yml 1.6 KB
- references/backend-support.md 8.3 KB
- references/compliance-mappings.md 7.3 KB
- references/field-modifiers.md 8.4 KB
- references/log-source-guide.md 5.9 KB
- references/mitre-attack-mapping.md 7.0 KB
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.
- 1mo ago First seen · 506 lines · 115 tokens per session scan A c8abcece9599
detection-sigma is a skill published in the GitHub repository AgentSecOps/SecOpsAgentKit (222 stars, last pushed 6mo ago), with no licence file. It adds 115 tokens to every session and 3,699 once invoked, about $0.0005 per session on Opus 5.5. 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.
Other skills, from other repositories
writing-sigma-detection-rules
Converts hunt findings into portable Sigma detection rules: choosing the right logsource, expressing robust selection/filter logic, setting level and ATT&CK tags, and validating before converting to a SIEM query. Activates for requests to write a Sigma rule, convert a hunt to a detection, or create portable SIEM…
hunting-process-injection-with-sysmon
Hunts for process injection using Sysmon telemetry: correlating CreateRemoteThread (EID 8), suspicious cross-process access (EID 10), and RWX image-less memory to surface hollowing, shellcode injection, and APC abuse. Activates for requests to hunt process injection, analyze Sysmon EID 8/10, or detect code injection…
hunting-suspicious-powershell-execution
Hunts malicious PowerShell using script-block (EID 4104) and module logging: scoring encoded commands, download cradles, AMSI/logging bypass, and in-memory execution, then decoding payloads for triage. Activates for requests to hunt malicious PowerShell, analyze script-block logs, or detect encoded command abuse.
operationalizing-a-hunt-into-a-detection
Converts a successful threat hunt into a durable detection by extracting the discriminating logic, defining data sources and thresholds, and emitting a Sigma rule plus a test and tuning plan. Activates for requests to operationalize a hunt, turn a finding into a detection rule, or productionize hunt logic as a Sigma…
writing-yara-rules-from-reversed-code
Turns reverse-engineering findings into durable YARA detections: selecting stable code constructs and constants over volatile strings, extracting opcode/byte patterns with wildcards, and validating rules for low false positives. Activates for requests to write a YARA rule from reversed code, create a detection…
detection-engineering
Guides creation of detection rules using Sigma rule specification and the Palantir Alerting and Detection Strategy (ADS) framework, mapped to MITRE ATT&CK v16 techniques. Auto-invoked when the user discusses detection logic, Sigma rules, ATT&CK coverage gaps, or asks "how do I detect this technique?" Produces…