* feat(mcp): add Streamable HTTP transport with OAuth 2.0
Odysseus could only reach MCP servers over stdio and SSE, so modern
remote servers like https://mcp.higgsfield.ai/mcp (Streamable HTTP,
gated behind OAuth) could not be connected.
Add an `http` transport that connects via the SDK's
streamablehttp_client and authenticates with the SDK's
OAuthClientProvider: RFC 9728 protected-resource discovery, RFC 8414
authorization-server metadata, Dynamic Client Registration,
authorization-code + PKCE, and token refresh. A small bridge
(src/mcp_oauth.py) connects the SDK's blocking callback to the existing
web callback route via an asyncio.Future keyed by the OAuth `state`,
and the dynamic client registration plus tokens persist per-server in a
new encrypted `oauth_tokens` column.
The connect runs as a bounded background task so the "Add server"
request returns immediately; redirect_handler publishes needs_auth +
auth_url to connection state as soon as discovery/DCR completes (which
can exceed the bounded wait), and the UI polls until connected. Remote
users finish via the existing paste-back flow. The Google OAuth path is
left unchanged.
- core/database.py: encrypted oauth_tokens column + migration
- src/mcp_oauth.py: OAuth provider, DB-backed TokenStorage, state registry
- src/mcp_manager.py: http dispatch, background connect, _connect_http
- routes/mcp_routes.py: http validation, needs_auth/auth_url, callback bridge
- static/js/settings.js: Streamable HTTP option + OAuth flow with polling
- tests: 5 new unit tests (transport dispatch, registry, token storage)
Verified against the live Higgsfield server: discovery, DCR (client_id
issued), loopback redirect accepted, and a PKCE authorization URL with
needs_auth status. No regressions (full suite delta is only the 5 added
passing tests).
* fix(mcp): address PR #1033 review feedback
- mcp_oauth: derive redirect URI from OAUTH_REDIRECT_BASE_URL/APP_PUBLIC_URL
(default http://localhost:7000) instead of hardcoding the port
- mcp_oauth: leave OAuth scope unset so the SDK derives it from the server's
WWW-Authenticate/protected-resource metadata; hardcoding an OIDC scope broke
non-OpenID MCP servers (verified: Higgsfield still gets its server-derived
scope)
- mcp_oauth: prune abandoned OAuth flows (_prune_stale + _pending_ts) so the
module-level registries can't grow unbounded
- mcp_oauth: persist tokens/client-info in a single DB session/commit
(_update) instead of a load+save double round-trip
- mcp_manager: cancel and drop the background connect task in
disconnect_server so a deleted server stops publishing status
- database: document why the oauth_tokens migration uses TEXT while the model
declares EncryptedText (encryption is applied at the Python layer)
- settings.js: surface persistent OAuth-poll failures and an explicit timeout
message instead of silently swallowing errors
- tests: cover the stale-flow pruning
* static/js/settings.js now shows an in-flight loading state on the buttons that fire requests:
Hardens issues found in a security review of the current tree (separate from
the cookbook SSH PR):
- Email thread rendering (static/js/emailLibrary.js): the flat read path runs
inbound HTML through the allowlist sanitizer, but the two threaded paths
(_renderTurnsAsBubbles / _renderTurnsFromServer — the default view) injected
server-parsed `body_html` raw into the DOM. A crafted inbound email could
inject arbitrary markup (phishing/form/credential-capture/tracking; full XSS
if a deployment relaxes the script CSP). Now sanitized on all paths.
- Attachment extraction (routes/email_routes.py, routes/email_helpers.py): the
on-disk extraction dir was `ATTACHMENTS_DIR / f"{folder}_{uid}"` with
user-controlled folder/uid and no containment, so a folder like `../../tmp`
could escape ATTACHMENTS_DIR. New attachment_extract_dir() flattens both to a
single safe segment and asserts containment.
- Diagnostics routes (routes/diagnostics_routes.py): /api/db/stats,
/api/rag/stats, /api/test/youtube, /api/test-research relied only on the
global session check (any logged-in user). Now require_admin-gated.
- Defense-in-depth HTML escaping: session HTML export escapes the session name
(routes/session_routes.py); the MCP OAuth page escapes the reflected Host
header / server_id (routes/mcp_routes.py).
- Internal-tool token now compared with secrets.compare_digest (constant time)
in core/middleware.py and app.py.
Adds regression tests in tests/test_security_regressions.py.
