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* feat(mcp): scan and pin upstream tool descriptions
Run every discovered MCP tool's description and input schema through the
pre_mcp_call guardrails before a listing reaches the client, drop the tools
a guardrail blocks, and serve the guardrail's masked text otherwise. Add
POST and DELETE /v1/mcp/server/{server_id}/pin so an admin can freeze a
server's tool names and descriptions; the gateway serves the pinned catalog
and raises a Slack alert with the diff when the upstream drifts.
* chore: sync schema.prisma copies from root
* fix(mcp): pin input schemas, scan before pinning, admin-only pin writes
* fix(mcp): apply overrides and the pin before the discovery scan, dedupe alerts before sending
The guardrail scan now runs on the text the client is about to see: description overrides are applied first, the pinned catalog next, and the scan last, so a masked pinned or override description is served masked and a pinned tool keeps serving its pinned text while the upstream's text is poisoned. The alert signature is recorded before the send and dropped only when that send fails, so a recovery during a slow send is never undone. A tool whose scan payload cannot be built is hidden alone instead of failing the listing. apply_tool_overrides shrinks to apply_display_name_overrides and the MagicMock servers in the MCP tests carry pinned_tools=None.
* fix(mcp): snapshot the pin through the REST module's unpinned catalog helper
* fix(mcp): pin the raw upstream catalog so an override never hides upstream description drift
* refactor(mcp): trim the tool catalog guard docstrings to one line
* test(mcp): cover guarded discovery boundaries and response definitions
* fix(mcp): bound discovery guardrail concurrency per catalog
* fix(mcp): scan tool catalogs in bounded parallel batches
* fix(mcp): hide pinned catalogs from restricted management views
---------
Co-authored-by: mateo-berri <277851410+mateo-berri@users.noreply.github.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Joshua Valluru <326636767+joshua-berri@users.noreply.github.com>
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| .. | ||
| auth | ||
| faults | ||
| guardrail_translation | ||
| outbound_credentials | ||
| conftest.py | ||
| test_byok_credential_cache.py | ||
| test_byok_oauth_endpoints.py | ||
| test_callback_oauth_error_responses.py | ||
| test_capabilities.py | ||
| test_client_allowlist.py | ||
| test_contracts.py | ||
| test_db_credentials.py | ||
| test_discoverable_endpoints.py | ||
| test_gateway_dcr_flow.py | ||
| test_idp_token_exchange.py | ||
| test_is_tool_name_prefixed.py | ||
| test_jwt_mcp_enforcement.py | ||
| test_jwt_mcp_simple.py | ||
| test_mcp_block_recording.py | ||
| test_mcp_cost_calculator.py | ||
| test_mcp_custom_fields.py | ||
| test_mcp_debug.py | ||
| test_mcp_discovery.py | ||
| test_mcp_elicitation_handler.py | ||
| test_mcp_env_vars.py | ||
| test_mcp_guardrail_usage_monitor.py | ||
| test_mcp_header_alias_utils.py | ||
| test_mcp_hook_extra_headers.py | ||
| test_mcp_max_concurrent_requests.py | ||
| test_mcp_metadata_preservation.py | ||
| test_mcp_oauth_passthrough.py | ||
| test_mcp_oauth_passthrough_cold_start.py | ||
| test_mcp_oauth_passthrough_tools.py | ||
| test_mcp_partial_update.py | ||
| test_mcp_proxy_mode.py | ||
| test_mcp_sampling_completion_flow.py | ||
| test_mcp_sampling_model_access.py | ||
| test_mcp_sampling_model_resolution.py | ||
| test_mcp_sampling_priority_selection.py | ||
| test_mcp_sampling_request_builder.py | ||
| test_mcp_sampling_response_conversion.py | ||
| test_mcp_sampling_tool_conversion.py | ||
| test_mcp_server.py | ||
| test_mcp_server_identity_env.py | ||
| test_mcp_server_manager.py | ||
| test_mcp_session_logging.py | ||
| test_mcp_sigv4_auth.py | ||
| test_mcp_stale_session.py | ||
| test_mcp_tool_search.py | ||
| test_mcp_toolset_scope.py | ||
| test_oauth2_flow_backfill.py | ||
| test_oauth2_token_cache.py | ||
| test_oauth_identity_binding.py | ||
| test_oauth_issuer_stamp_backfill.py | ||
| test_openapi_to_mcp_generator.py | ||
| test_openapi_tool_auth.py | ||
| test_operations.py | ||
| test_proxy_api_credentials.py | ||
| test_rest_endpoints.py | ||
| test_result_conversion.py | ||
| test_semantic_tool_filter.py | ||
| test_server_resolution.py | ||
| test_short_mcp_tool_prefix.py | ||
| test_ui_session_utils.py | ||
| test_utils.py | ||