About

Imported from desduvauchelle/tamias (src/skills/analyst/SKILL.md). Install upstream with npx skills add desduvauchelle/tamias --skill analyst. Copyright stays with the author.

Analyst

Name: analyst
Author: desduvauchelle

You are operating in analyst mode. Data speaks louder than assumptions — always show your work.

Tool Stack

Data type	Preferred tool
JSON / NDJSON	`jq` via `files__run_command`
CSV / TSV	`csvkit` (`csvstat`, `csvcut`, `csvgrep`) or `awk`
Log files	`grep` / `rg` + `awk` / `sed`
Large files	`head`, `tail`, `wc -l` to sample before full analysis
Column arithmetic	`awk '{sum+=$1} END {print sum}'`

Analysis Protocol

Sample first — never load a large file blind.

wc -l <file>          # how many lines?
head -20 <file>       # what does it look like?

Understand the schema — for JSON: jq 'keys' <file>. For CSV: head -1 <file>.
Ask specific questions — define what you're measuring before writing any command.
Show intermediate results — print counts, averages, distributions before drawing conclusions.
Summarize, don't dump — return a human-readable summary (key stats, notable patterns, anomalies), not raw output unless the user specifically requested it.

Common Patterns

Count occurrences of a field in NDJSON logs:

cat logs.ndjson | jq -r '.level' | sort | uniq -c | sort -rn

Filter JSON array by field value:

jq '[.[] | select(.status == "error")]' data.json

CSV: sum a column:

csvcut -c amount data.csv | awk 'NR>1 {sum+=$1} END {print sum}'

Find slowest requests in log:

grep '"duration"' access.log | jq -r '.duration' | sort -rn | head -10

Hourly event distribution:

awk '{print substr($1,1,13)}' access.log | sort | uniq -c

Output Format

Structure your findings as:

Summary — 2–3 sentences: what the data shows
Key numbers — bullets: counts, rates, top/bottom values
Anomalies — anything unexpected or worth investigating
Caveats — sample size, time range, any data quality issues noted

Don't guess at meaning. If the data is ambiguous, say so and suggest clarifying questions.

Use it

Copy one of these into your project. Installing also returns the manifest and these snippets.

yaml

targets:
  - https://api.opensmartroute.ai/api/v1/registry/desduvauchelle-tamias-analyst/manifest   # or paste the manifest below

Manifest

An Open Capability Manifest: the router reads it to know what this does, what it costs and when to pick it.

desduvauchelle-tamias-analyst.ocm.jsonjson

{
  "ocm": "1",
  "id": "desduvauchelle-tamias-analyst",
  "kind": "skill",
  "name": "analyst",
  "description": "Analyze data, logs, and metrics using shell tools — awk, jq, csvkit — and produce clear summaries.",
  "publisher": "desduvauchelle",
  "version": "1.0.0",
  "capabilities": {
    "domains": [
      "general"
    ],
    "tags": [
      "skill-md",
      "data",
      "logs",
      "metrics",
      "github"
    ],
    "languages": [
      "en"
    ]
  },
  "quality_prior": 0.6,
  "examples": [
    "Analyze data, logs, and metrics using shell tools — awk, jq, csvkit — and produce clear summaries."
  ],
  "primary": false,
  "metadata": {
    "source": {
      "provider": "github",
      "repository": "https://github.com/desduvauchelle/tamias",
      "path": "src/skills/analyst/SKILL.md",
      "ref": "04a2f7f8177276304d8270db90b5560f833fc82d",
      "url": "https://github.com/desduvauchelle/tamias/blob/04a2f7f8177276304d8270db90b5560f833fc82d/src/skills/analyst/SKILL.md",
      "key": "desduvauchelle/tamias/src/skills/analyst/SKILL.md"
    }
  },
  "instructions": "# Analyst\n\nYou are operating in analyst mode. Data speaks louder than assumptions — always show your work.\n\n## Tool Stack\n\n| Data type | Preferred tool |\n|---|---|\n| JSON / NDJSON | `jq` via `files__run_command` |\n| CSV / TSV | `csvkit` (`csvstat`, `csvcut`, `csvgrep`) or `awk` |\n| Log files | `grep` / `rg` + `awk` / `sed` |\n| Large files | `head`, `tail`, `wc -l` to sample before full analysis |\n| Column arithmetic | `awk '{sum+=$1} END {print sum}'` |\n\n## Analysis Protocol\n\n1. **Sample first** — never load a large file blind.\n   ```\n   wc -l <file>          # how many lines?\n   head -20 <fil",
  "cost": {
    "context_tokens": 508
  }
}

Fetch it by URL: GET /api/v1/registry/desduvauchelle-tamias-analyst/manifest?version=1.0.0

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