Signals
PostHog/posthog
How to query the documentembeddings table for raw signal data using HogQL.
The signal-analysis skill guides agents through ObsPy waveform filtering, trigger/STA-LTA detection, correlation, spectral quality control, response correction or simulation, array processing, and…
Custom licenceAuto-check passed
Install Signal Analysis
$ npx skills add VectorSpaceLab/AREX-Skill --skill signal-analysis -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install VectorSpaceLab/AREX-Skill signal-analysis --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/repositories/repo-skills/obspy/sub-skills/signal-analysis .claude/skills/signal-analysis && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "signal-analysis" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/obspy/sub-skills/signal-analysis into .claude/skills/signal-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "signal-analysis", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/obspy/sub-skills/signal-analysisType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add VectorSpaceLab/AREX-Skill --skill signal-analysis -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install VectorSpaceLab/AREX-Skill signal-analysis --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/repositories/repo-skills/obspy/sub-skills/signal-analysis .agents/skills/signal-analysis && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "signal-analysis" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/obspy/sub-skills/signal-analysis into .agents/skills/signal-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "signal-analysis", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add VectorSpaceLab/AREX-Skill --skill signal-analysis -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install VectorSpaceLab/AREX-Skill signal-analysis --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/repositories/repo-skills/obspy/sub-skills/signal-analysis .cursor/skills/signal-analysis && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "signal-analysis" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/obspy/sub-skills/signal-analysis into .cursor/skills/signal-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "signal-analysis", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/VectorSpaceLab/AREX-Skill.git --path skills/repositories/repo-skills/obspy/sub-skills/signal-analysis--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add VectorSpaceLab/AREX-Skill --skill signal-analysis -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install VectorSpaceLab/AREX-Skill signal-analysis --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/repositories/repo-skills/obspy/sub-skills/signal-analysis .gemini/skills/signal-analysis && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "signal-analysis" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/obspy/sub-skills/signal-analysis into .gemini/skills/signal-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "signal-analysis", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install VectorSpaceLab/AREX-Skill signal-analysisInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add VectorSpaceLab/AREX-Skill --skill signal-analysis -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/repositories/repo-skills/obspy/sub-skills/signal-analysis .github/skills/signal-analysis && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "signal-analysis" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/obspy/sub-skills/signal-analysis into .github/skills/signal-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "signal-analysis", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add VectorSpaceLab/AREX-Skill --skill signal-analysis -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install VectorSpaceLab/AREX-Skill signal-analysis --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/repositories/repo-skills/obspy/sub-skills/signal-analysis .opencode/skills/signal-analysis && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "signal-analysis" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/obspy/sub-skills/signal-analysis into .opencode/skills/signal-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "signal-analysis", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
signal-analysis- GitHub stars
- 331
- Token cost
- ~1.4k tokens
- SKILL.md length
- 618 words
- Files
- 5 (incl. scripts, references)
- Skills in repo
- 157
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
The signal-analysis skill guides agents through ObsPy waveform filtering, trigger/STA-LTA detection, correlation, spectral quality control, response correction or simulation, array processing, and…
- Works in 6 steps: Prepare: copy, inspect timing and gaps,… → Filter/QC: use… → Detect: band-limit as justified, convert… → …
- SKILL.md covers Operating contract, Route by task and Guardrails
- Runs Python scripts from its folder; calls python
What it does
Signal Analysis is an agent skill from VectorSpaceLab/AREX-Skill. The signal-analysis skill guides agents through ObsPy waveform filtering, trigger/STA-LTA detection, correlation, spectral quality control, response correction or simulation, array processing, and stateful real-time analysis with explicit sampling assumptions.
Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including scripts and reference files (for example `references/api-reference.md`, `references/processing-recipes.md` and `references/troubleshooting.md`).
The repository describes itself as: A Skill Library for Automated Machine Learning.
Example prompts
- “/signal-analysis”
Requirements
- Python 3
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Prepare: copy, inspect timing and gaps, merge only with an intentional
- Filter/QC: use Trace.filter/Stream.filter for labeled waveforms;
- Detect: band-limit as justified, convert STA/LTA durations to samples,
- Correlate: align IDs, sample rates, units, and preprocessing between
- Spectral/response: use PPSD only with a stable ID/sample rate and
- Array/real time: array_processing requires equal sample rates and
What it can do on your machine
Read from SKILL.md and the folder at commit ac3fe1a. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
python
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Signal Analysis loads about 1.4k tokens when it runs, and up to ~5.9k if it reads all its reference files. Until then it costs about 69 tokens; SKILL.md has 618 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 618 words (~1,387 tokens).
“Use this skill after a Trace/Stream is available and the task is waveform processing, detection, correlation, spectral QC, response handling, array beamforming, or packet-by-packet processing. Keep raw data intact with .copy() before any in-place operation. This skill does not acquire…”
- name
- signal-analysis
- disable-model-invocation
- true
- metadata.disco-role
- operating
- license
- NOASSERTION
Files
SKILL.md and 4 other files (scripts, references) in skills/repositories/repo-skills/obspy/sub-skills/signal-analysis of VectorSpaceLab/AREX-Skill.
- SKILL.md
- references/api-reference.md
- references/processing-recipes.md
- references/troubleshooting.md
- scripts/signal_smoke.py
Open the folder on GitHubat commit ac3fe1a
Compare with similar skills
Signal Analysis next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Signal Analysis this skillVectorSpaceLab/AREX-Skill | 331 | — | ~1.4k | Automated safety check: Pass | Custom licence | |
| SignalsPostHog/posthog | 40k | — | ~4.3k | Automated safety check: Pass | Custom licence | |
| Agent Signal Pipelinelobehub/lobehub | 83k | — | ~1.7k | Automated safety check: Pass | Custom licence | |
| Write Guidevercel/next.js | 143k | — | ~1.6k | Automated safety check: Pass | MIT | |
| Design Guidepaperclipai/paperclip | 99k | 1 repos | ~3.1k | Automated safety check: Pass | MIT | |
| Filterzalando/skipper | 3.3k | — | ~527 | Automated safety check: Pass | MIT |
Similar skills
- Official
Agent Signal Pipeline
lobehub/lobehub
Guides building event-driven background work for LobeHub agents, with sources, signals, actions, policies, workflow handoff and deduplication.
- Official
Write Guide
vercel/next.js
Generates technical guides that teach real-world use cases through progressive examples.
Design Guide
paperclipai/paperclip
Paperclip UI design system guide for building consistent, reusable frontend components.
Filter
zalando/skipper
Create or modify code in the filters package and all its sub-folders
Write Guides
remix-run/remix
Write, rewrite, or audit Remix guide chapters in the voice of docs/guides/app/actions/docs/chapters/01-start-here.md.
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Questions about Signal Analysis
What does Signal Analysis do?
The signal-analysis skill guides agents through ObsPy waveform filtering, trigger/STA-LTA detection, correlation, spectral quality control, response correction or simulation, array processing, and…. Signal Analysis is an agent skill from VectorSpaceLab/AREX-Skill. The signal-analysis skill guides agents through ObsPy waveform filtering, trigger/STA-LTA detection, correlation, spectral quality control, response correction or simulation, array processing, and stateful real-time analysis with explicit sampling assumptions.
How do I install Signal Analysis in Claude Code?
Run `npx skills add VectorSpaceLab/AREX-Skill --skill signal-analysis -a claude-code`. Or copy the skill folder (skills/repositories/repo-skills/obspy/sub-skills/signal-analysis in VectorSpaceLab/AREX-Skill) into .claude/skills/signal-analysis in your project. Claude Code loads it when a task matches its description.
How do I install Signal Analysis in Codex?
Run `npx skills add VectorSpaceLab/AREX-Skill --skill signal-analysis -a codex`. Or copy the skill folder (skills/repositories/repo-skills/obspy/sub-skills/signal-analysis in VectorSpaceLab/AREX-Skill) into .agents/skills/signal-analysis in your project. Codex loads it when a task matches its description.
Can I use Signal Analysis in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add VectorSpaceLab/AREX-Skill --skill signal-analysis -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/signal-analysis, .gemini/skills/signal-analysis, .github/skills/signal-analysis and .opencode/skills/signal-analysis in your project.
What does Signal Analysis need to run?
Going by SKILL.md and its folder, Signal Analysis needs Python for the scripts in its folder and the command-line tools its instructions call (python). Our summary lists: Python 3.
Does Signal Analysis access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Signal Analysis safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Signal Analysis use?
Signal Analysis has a licence file (declared in SKILL.md) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Signal Analysis use?
About 1.4k tokens (SKILL.md is roughly 5.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 4.5k tokens, read only when the agent opens those files.
What are the alternatives to Signal Analysis?
Skills that share tags, products or a category with Signal Analysis: Signals (PostHog/posthog, 40k stars), Agent Signal Pipeline (lobehub/lobehub, 83k stars), Write Guide (vercel/next.js, 143k stars) and Design Guide (paperclipai/paperclip, 99k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Signal Analysis?
VectorSpaceLab (a GitHub organization) maintains it in VectorSpaceLab/AREX-Skill, which has 331 GitHub stars. The repository holds 157 skills in this directory. The repository was last updated on September 3, 2026.
Source: VectorSpaceLab/AREX-Skill on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.