# Oscar E. López, Ph.D. — Data

> Transparent, source-cited datasets for the agent web, maintained by Oscar E. López, Ph.D. (Information Systems, UMass Amherst). Every value carries its sources, coverage, methodology, and a fixed citation. Flagship: a daily Argentina food & beverage price index.

## Datasets
- [Argentina Food & Beverage Price Index](https://data.oscar-lopez.com/ar-food): daily online-price index (base=100), multiple estimators, free headline + paid full series.
- [AI Vendor Data-Trust Index](https://data.oscar-lopez.com/ai-trust): source-cited comparison of how 16 AI products handle your data (trains-on-data, zero-retention, opt-out). Every value has a verbatim policy quote + source URL + date; an automated verifier re-checks weekly. Free comparison + per-vendor verdict; paid full records/history/bulk.
- [AI Model Lifecycle & Deprecation Index](https://data.oscar-lopez.com/model-lifecycle): cross-vendor model status (active/preview/deprecated/retired), release/deprecation/shutdown dates, and migration targets across OpenAI, Anthropic, Google, and Amazon Bedrock. Every date traceable to the provider's official announcement. Free lookups + upcoming-deprecations feed; full export (free during preview).

## Key pages
- [Home / catalog](https://data.oscar-lopez.com/)
- [Methodology](https://data.oscar-lopez.com/methodology): estimators (Jevons / Carli / trimmed), sources, coverage, limits, citation.
- [Data ethics](https://data.oscar-lopez.com/ethics): public prices only, no personal data.
- [Changelog](https://data.oscar-lopez.com/changelog): version history and corrections.
- [About the author](https://oscar-lopez.com/): Oscar E. López, Ph.D. — credentials and expertise.

## For AI agents (API / MCP) — host: api.oscar-lopez.com
Free:
- `GET /v1/headline` — latest index value (optional `?method=jevons|carli|trimmed`)
- `GET /v1/methods` — methodology comparison (all estimators, same data)
Paid ($0.02 via x402):
- `GET /v1/index` — full daily series (`?method=`, `?subcat=`)
- `GET /v1/categories` — per-subcategory sub-indices
MCP endpoint: `https://api.oscar-lopez.com/mcp`
- Free tools: `get_ar_food_headline`, `get_ar_food_methods`
- Paid tool: `get_ar_food_price_index` (args: `method`, `subcat`)
Discovery: `/.well-known/x402` and `/openapi.json`

## For AI agents (API / MCP) — host: trust.oscar-lopez.com
Free:
- `GET /v1/ai-trust/headline?vendor=ID` — per-vendor verdict + cited headline fields
- `GET /v1/ai-trust/compare?field=KEY` — one field across all vendors
- `GET /v1/ai-trust/matrix` — full headline comparison, all vendors, one call
Paid ($0.02 via x402):
- `GET /v1/ai-trust/vendor?vendor=ID` — full cited record
- `GET /v1/ai-trust/all` — bulk export
MCP endpoint: `https://trust.oscar-lopez.com/mcp`
- Free tools: `get_ai_vendor_trust_headline`, `get_ai_vendor_trust_compare`
- Paid tool: `get_ai_vendor_trust` (arg: `vendor`)
Vendor IDs: openai-api, openai-consumer, anthropic-api, google-vertex, google-gemini-consumer, microsoft-copilot, azure-openai, aws-bedrock, mistral-api, meta-llama, github-copilot
Discovery: `/.well-known/x402` and `/openapi.json`

## For AI agents (API / MCP) — host: lifecycle.oscar-lopez.com
Free:
- `GET /v1/lifecycle/model?id=ID` — lifecycle of one model (status, dates, days-to-shutdown, replacement, source)
- `GET /v1/lifecycle/deprecations?within_days=90` — models shutting down within N days
- `GET /v1/lifecycle/provider?provider=openai|anthropic|google|aws-bedrock` — a provider's models
Full export (free during preview): `GET /v1/lifecycle/all`
MCP endpoint: `https://lifecycle.oscar-lopez.com/mcp`
- Free tools: `model_lifecycle`, `is_model_live`, `upcoming_deprecations`
- Preview-free tool: `get_model_lifecycle_all`
Example model ids: gpt-4-32k, claude-3-opus-20240229, gemini-2.0-flash, anthropic.claude-sonnet-4-20250514-v1:0
Discovery: `/.well-known/x402`, `/.well-known/agent-card.json`, `/openapi.json`

## Citations
López, O. E. (2026). Argentina Food & Beverage Online Price Index. https://data.oscar-lopez.com/methodology
López, O. E. (2026). AI Vendor Data-Trust Index. https://data.oscar-lopez.com/ai-trust
López, O. E. (2026). AI Model Lifecycle & Deprecation Index. https://data.oscar-lopez.com/model-lifecycle