# roomi-fields public JSON Schemas > Canonical, versioned JSON Schemas published by roomi-fields. The URLs on this > host are intended as stable `$id` targets in sidecar payloads consumed by > RTFM, NotebookLM-MCP and downstream retrieval systems. This site is small and reference-only. There is no application logic, no user data, and no rate limit. Crawl freely. All content is plain text or `application/schema+json`. ## Schemas - [nblm-answer-v1](https://schemas.roomi-fields.com/nblm-answer-v1.json): JSON Schema for sidecar payloads produced by `notebooklm-mcp /batch-to-vault`. One NotebookLM answer with citations, source excerpts and session metadata. Version 1.0, stable. - [rtfm-mapping-v1](https://schemas.roomi-fields.com/rtfm-mapping-v1.json): JSON Schema for declarative mappings consumed by the RTFM retrieval layer. Lets a project describe how arbitrary JSON documents (matching by `schema_url` or `discriminator`) should be extracted into chunks (and optional edges) at sync time. Version 1.0, stable. ## Conventions - Every schema has a stable, immutable `$id` URL on this host. - Breaking changes publish a new file (`…-v2.json`); existing files are never mutated. - All schemas use JSON Schema draft 2020-12. - License: MIT. ## Optional - [Project: notebooklm-mcp](https://github.com/roomi-fields/notebooklm-mcp): producer of nblm-answer-v1 sidecars. - [Project: rtfm](https://github.com/roomi-fields/rtfm): retrieval layer that consumes them; defines and consumes rtfm-mapping-v1. - [RTFM mapping reference](https://roomi-fields.github.io/rtfm/json-mappings/): full prose documentation of rtfm-mapping-v1. - [sitemap.xml](https://schemas.roomi-fields.com/sitemap.xml)