evo-seismic-picker

evo-seismic-picker is a skill for Claude Code, Codex from Zhang-Henry/CoEvoSkills. It costs 61 tokens per session (615 once invoked), scanned A, original, Apache-2.0.

A seismic signal-processing workflow that detects when P and S earthquake waves arrive in waveform recordings. It uses PhaseNet, a deep-learning model, and can use travel-time calculations when the model finds no pick.

In plain words
What is it for?
Use it to process three-component or single-channel seismic files and export P- and S-wave picks as a CSV file.
Why use it?
It handles channel ordering, signal scaling, incomplete single-channel recordings, and selection of the best valid arrivals.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to process three-component or single-channel seismic files and export P- and S-wave picks as a CSV file.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/zhang-henry/coevoskills/evo-seismic-picker
Install

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.

Any agent
npx skills add Zhang-Henry/CoEvoSkills --skill evo-seismic-picker
Clone the repo
git clone --depth 1 https://github.com/Zhang-Henry/CoEvoSkills

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for evo-seismic-picker

README.md
[![agentmods](https://agentmods.dev/badge/skills/zhang-henry/coevoskills/evo-seismic-picker/github.svg)](https://agentmods.dev/skills/zhang-henry/coevoskills/evo-seismic-picker)
Your own site
<a href="https://agentmods.dev/skills/zhang-henry/coevoskills/evo-seismic-picker"><img src="https://agentmods.dev/badge/skills/zhang-henry/coevoskills/evo-seismic-picker/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.

agentmods 80×15 button for evo-seismic-picker

Your own site · 80×15
<a href="https://agentmods.dev/skills/zhang-henry/coevoskills/evo-seismic-picker"><img src="https://agentmods.dev/badge/skills/zhang-henry/coevoskills/evo-seismic-picker.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 615 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00061 $0.00615
Opus 5 $0.00030 $0.00308
Sonnet 5 $0.00012 $0.00123
Haiku 4.5 $0.00006 $0.00061

Measured 9d ago against content hash 52cda2edf548, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

evo-seismic-picker 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 9d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/utils.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

artifacts/skills/seismic-phase-picking/evo-seismic-picker/SKILL.md · 54 lines

How it starts

The opening of the file, as written. The whole thing — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.

evo-seismic-picker

Seismic phase picking skill using PhaseNet (SeisBench) for P and S wave arrival detection.

Approach

  1. Load each trace's 3-component waveform data
  2. Reorder channels to ZNE orientation
  3. Handle single-channel data by replicating active channel to all 3 components
  4. Normalize data by dividing by max absolute value (critical for PhaseNet)
  5. Create ObsPy Stream with proper metadata
  6. Auto-calibrate probability thresholds from a data sample (or accept caller-supplied)
  7. Run PhaseNet classify() to get P and S picks
  8. Select best picks per trace (highest probability, S must follow P)
  9. For files where PhaseNet finds no picks, fall back to metadata-based travel time computation
  10. Write results to CSV with file_name, phase, pick_idx columns

Key Insights

  • PhaseNet requires normalized data to produce picks (raw physical units are extremely small)
  • Single-channel stations need signal replicated to all 3 components
  • Accelerometer data works fine without integration when normalized
  • Probability thresholds are calibrated from data sample, not hardcoded
  • Metadata fallback uses caller-supplied Vp and Vp/Vs ratio with hypocentral distance

Usage

import sys
sys.path.insert(0, '/app/environment/skills/evo-seismic-picker/scripts')
from utils import process_all_files

# Run full pipeline - thresholds auto-calibrated from data
df = process_all_files('/root/data/', '/root/results.csv')

# Or supply explicit thresholds and velocity model
df = process_all_files('/root/data/', '/root/results.csv',
                       p_threshold=0.3, s_threshold=0.3,
                       vp=6.0, vs_ratio=1.73)

Key Functions

  • load_trace(filepath) - Load npz trace file with metadata
  • prepare_zne_normalized(data, channels) - Reorder to ZNE, handle single-channel, normalize
  • make_obspy_stream(zne_data, dt, start_time_str) - Convert to ObsPy Stream
  • calibrate_thresholds(data_dir, model, sample_size) - Derive thresholds from data
  • metadata_based_pick(trace_info, vp, vs_ratio) - Compute P/S indices from metadata
  • pick_with_phasenet(stream, model, dt, start_time_str, p_threshold, s_threshold) - Run PhaseNet
  • select_best_picks(picks) - Select best P and S from candidates
  • process_all_files(data_dir, output_csv, ...) - Full end-to-end pipeline

Read the full file on GitHub · 54 lines

Files

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.

Changes

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.

  1. 9d ago First seen · 54 lines · 61 tokens per session scan A 52cda2edf548

Subscribe to this mod's changes

evo-seismic-picker is a skill published in the GitHub repository Zhang-Henry/CoEvoSkills (66 stars, last pushed 22d ago), licensed Apache-2.0. It adds 61 tokens to every session and 615 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 2026-09-03.

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