c84f951a5c2f51279277a506754b2bd94de28249
1 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
 Jakob Wennberg
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ef25a87d75 |
feat(mcp): Tasks extension (io.modelcontextprotocol/tasks) (#1283)
* feat(mcp): speak spec revision 2026-07-28 (stateless core) Adopt the 2026-07-28 MCP spec revision on the connector endpoint while keeping every handshake-era client (2025-06-18 and earlier) byte-identical: - Accept per-request _meta protocol negotiation (io.modelcontextprotocol/protocolVersion); unsupported versions return UnsupportedProtocolVersionError (-32022) with the supported list. - Implement server/discover (spec MUST): supported revisions, capabilities including the extensions field, identity, instructions, freshness hints. - Decorate results for stateless clients: required resultType, serverInfo in _meta, and CacheableResult ttlMs/cacheScope on tools/list, prompts/list, resources/list, resources/read. - Validate the standard Mcp-Method/Mcp-Name request headers when present (HeaderMismatchError -32020); absence stays accepted. - Declare the ratified MCP Apps extension (io.modelcontextprotocol/ui) in capabilities; the widgets already use the ratified mime type and _meta.ui.resourceUri shape, so no widget changes are needed. - OAuth: include the RFC 9207 iss parameter on every authorization response (success and error) and advertise authorization_response_iss_parameter_supported in RFC 8414 metadata. Resource-not-found already used -32602 and tools/list ordering was already deterministic; both are covered by the new test file. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * feat(mcp): Tasks extension (io.modelcontextprotocol/tasks) Durable handles for long-running MCP tool calls, per the official Tasks extension. A client that declares the extension in its per-request capabilities gets a CreateTaskResult (resultType: "task") immediately; the work completes after the response via after() and lands in the new mcp_tasks table for tasks/get polling. Clients that did not declare the extension are never handed a task (spec MUST). - New mcp_tasks table (migration 20260729094000): company-scoped SELECT RLS, service-role-only writes (mirrors pending_operations), 1-hour expiry, status lifecycle CHECK. pg-real coverage included; triaged as excluded in the full-archive backup contract (transient state). - tasks/get (creator-scoped), tasks/cancel (cooperative, working-only flip), tasks/update (ack no-op: no input_required flows yet). - Tool opt-in via shouldRunAsTask predicate; first producer is gnubok_audit_package, the one genuinely long-running blocking call (multi-minute ZIP generation). estimate_only stays synchronous. - Tool failures complete the task with the standard isError envelope, exactly what the synchronous call would have returned; the failed status stays reserved for infrastructure errors. - server/discover and initialize now advertise the tasks extension. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * fix(mcp): creator-only task RLS, enforced expiry sweep, RoPA entry Compliance-swarm follow-ups on the mcp_tasks migration (editing the migration is safe: it has not shipped beyond the ephemeral PR preview): - SELECT RLS tightened from company-wide to auth.uid() = user_id so the DB grant matches the creator-scoped tasks/get contract; task results carry raw tool output (Art. 5(1)(c)). pg test now proves a same-company colleague cannot read the row. - The 1-hour retention is now enforced, not aspirational: createMcpTask opportunistically deletes expired rows on every creation (idx_mcp_tasks_expires), best-effort (Art. 5(1)(e)). - RoPA entry mcp.async_task_handles added to .compliance/ropa.yaml (Art. 30). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * fix(mcp): literal terminal-update payload for the phantom-column guard The conditional spreads in resolveMcpTask made the payload unresolvable for the no-phantom-columns guard (362 > 360 ceiling). A literal payload writing null for absent terminal fields is equivalent here: the terminal transition sets the complete terminal state. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com> |