982 B
982 B
INTENT
web-fetcher exists to give research repositories a shared, trustworthy way
to pull data from the web and from public APIs.
Core commitments
- Provenance first. No value without source, URL, retrieval time and payload hash.
- Never invent. Missing data is an explicit
not_found, never a guess. Language models are not a data source here. - Reusable adapters. Statistics APIs, CSV/JSON endpoints and spreadsheets behind one small interface. New sources are added as adapters with offline fixture tests.
- Replayable. An optional content-addressed cache reproduces a run from the exact bytes it used.
- Minimal footprint. Standard library only, so it runs inside executors (for example rein-aharness on railiance01) without dependency management.
Out of scope: crawling, scraping behind logins, LLM-based extraction, scheduling (activity-core owns when), and execution orchestration (rein-aharness owns how it runs).