Open-Meteo Historical Fetch

Core Goal

• Fetch historical Open-Meteo archive data for one or more coordinates in one invocation.
• Support inclusive start_date and end_date windows.
• Return machine-readable JSON with request metadata, transport info, validation summary, and normalized records.
• Keep runtime observable with structured logs and optional log file output.

Required Environment

• Configure runtime by environment variables (see references/env.md).
• Start from assets/config.example.env.
• Load env values before running commands:

set -a
source assets/config.example.env
set +a

Workflow

1. Validate effective configuration.

python3 scripts/open_meteo_historical_fetch.py check-config --pretty

2. Dry-run the request plan first.

python3 scripts/open_meteo_historical_fetch.py fetch \
  --location 52.52,13.41 \
  --start-date 2026-03-01 \
  --end-date 2026-03-02 \
  --hourly-var temperature_2m \
  --hourly-var soil_moisture_0_to_7cm \
  --timezone GMT \
  --dry-run \
  --pretty

3. Run the fetch with validation and operational logs.

python3 scripts/open_meteo_historical_fetch.py fetch \
  --location 52.52,13.41 \
  --location 48.85,2.35 \
  --start-date 2026-03-01 \
  --end-date 2026-03-02 \
  --hourly-var temperature_2m \
  --hourly-var relative_humidity_2m \
  --hourly-var wind_speed_10m \
  --hourly-var soil_temperature_0cm \
  --hourly-var soil_moisture_0_to_7cm \
  --daily-var precipitation_sum \
  --daily-var et0_fao_evapotranspiration \
  --model era5 \
  --timezone GMT \
  --output ./data/open-meteo/open-meteo-fetch.json \
  --log-level INFO \
  --log-file ./logs/open-meteo-historical-fetch.log \
  --pretty

Built-in Robustness

• Retry transient HTTP and network failures with exponential backoff.
• Respect Retry-After when present and fail fast when it exceeds configured cap.
• Throttle request rate with minimum request interval.
• Enforce safety caps before remote calls:
  • maximum locations
  • maximum day range
  • maximum hourly variables
  • maximum daily variables
• Validate transport:
  • HTTP status handling
  • JSON content-type
  • UTF-8 strict decode
  • JSON parse
• Validate structure:
  • response object/list shape
  • requested section presence (hourly, daily)
  • time axis parseability and range checks
  • requested variable presence and aligned array lengths

Scope Decision

• Keep one atomic fetch implementation for the Open-Meteo historical archive endpoint only.
• Do not embed geocoding, polling loops, scheduler logic, or flood API handling.
• If recurring execution is needed, let OpenClaw orchestrate repeated calls externally.

References

• references/env.md
• references/open-meteo-api-notes.md
• references/open-meteo-limitations.md
• references/openclaw-chaining-templates.md

Script

• scripts/open_meteo_historical_fetch.py

OpenClaw Invocation Compatibility

• Keep trigger metadata in name, description, and agents/openai.yaml.
• Invoke with $open-meteo-historical-fetch.
• Keep calls atomic and parameterized by:
  • --location
  • --start-date
  • --end-date
  • --hourly-var
  • --daily-var
  • --model
• Use OpenClaw orchestration, not this script, for recurring jobs.

OpenClaw Prompt Templates

Use these templates directly in OpenClaw and only replace bracketed placeholders.

1. Recon (dry-run)

Use $open-meteo-historical-fetch.
Run:
python3 scripts/open_meteo_historical_fetch.py fetch \
  --location [LATITUDE,LONGITUDE] \
  --start-date [YYYY-MM-DD] \
  --end-date [YYYY-MM-DD] \
  --hourly-var [HOURLY_VARIABLE] \
  --timezone GMT \
  --dry-run \
  --pretty
Return only the JSON result.

2. Fetch (ecology verification window)

Use $open-meteo-historical-fetch.
Run:
python3 scripts/open_meteo_historical_fetch.py fetch \
  --location [LATITUDE,LONGITUDE] \
  --start-date [YYYY-MM-DD] \
  --end-date [YYYY-MM-DD] \
  --hourly-var temperature_2m \
  --hourly-var relative_humidity_2m \
  --hourly-var precipitation \
  --hourly-var wind_speed_10m \
  --hourly-var soil_moisture_0_to_7cm \
  --daily-var precipitation_sum \
  --daily-var et0_fao_evapotranspiration \
  --timezone GMT \
  --pretty
Return only the JSON result.

3. Validate (quality gate)

Use $open-meteo-historical-fetch.
Run:
python3 scripts/open_meteo_historical_fetch.py fetch \
  --location [LATITUDE,LONGITUDE] \
  --start-date [YYYY-MM-DD] \
  --end-date [YYYY-MM-DD] \
  --hourly-var temperature_2m \
  --hourly-var soil_moisture_0_to_7cm \
  --daily-var precipitation_sum \
  --timezone GMT \
  --pretty
Check validation_summary.total_issue_count and validation_summary.ok.
Return JSON plus one-line pass/fail verdict.