René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Context object (layered, per-request)","articleBody":"The handler-facing context: per-request client identity/capabilities/version reachable from handlers, transport info under a namespace, legacy session surface quarantined. Several other issues in this milestone add fields to this object, so settling its shape early unblocks them.\n\n## What's in it\n\n- Layered/namespaced shape (e.g. `ctx.transport.…`; legacy-only verbs/state quarantined).\n- Per-request client info / capabilities / protocol version reachable from handlers (fed from `_meta` in the modern era, from the connection in legacy).\n- Per-request `logLevel` gate: no `notifications/message` unless the request opted in.\n- OTel and user `meta=` keys coexist with the envelope.\n- Typed per-transport context replaces the raw-Starlette-`Request` carrier; auth/headers reachable.\n\n## Conformance\n\n- (SDK API surface — proven via in-repo tests)\n- Together with _Backwards compatibility \u0026 version negotiation_, _New HTTP serving path (modern + dual-era)_, _Capabilities API + server/discover handler_, _subscriptions/listen_: the per-request-logging and capability-enforcement checks inside `server-stateless` run (not skip) and pass\n\n## Dependencies\n\n- Depends on: none\n\n## References\n\n- [Base protocol (_meta)](https://modelcontextprotocol.io/specification/draft/basic/index)\n- [SEP-2575](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575)\n","author":{"url":"https://github.com/maxisbey","@type":"Person","name":"maxisbey"},"datePublished":"2026-06-17T11:11:59.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/2895/python-sdk/issues/2895"}