Marc Schier
be50f02700
# Description Expose existing stack APIs through **337 additional domain MCP tools**: 114 industrial-companion tools, 35 WoT/xRegistry/document tools, and 188 higher-level stack-workflow tools. The fully enabled catalogue contains **492 tools**; profile selection is not an execution grant. The packages now follow the reviewed structure: **`Opc.Ua.Mcp.Workflows`** contains roles/users, files, alarms and history; **`Opc.Ua.Mcp.WotCon`** contains management/documents and independently registered live WoT execution. GDS and schema tools remain separate packages. The executable composes **18 libraries**. | Workflow | Added domain tools | Profiles | | --- | ---: | --- | | GDS directory, certificates, reference-only credentials/tokens and Part 21 onboarding | 46 | `gds`, `certificates`, `credentials`, `onboarding` | | Roles/users, regular and temporary files, alarms/conditions and historical access | 74 | `roles`, `users`, `files`, `alarms`, `history` | | Bounded runtime types, XSD/BSD/UA JSON, PubSub and REST OpenAPI artifacts | 6 | `schemas` | | Named PubSub transports, remote configuration, declarative adapters/bridges and SKS | 52 | `pubsub-runtime`, `pubsub-configuration`, `pubsub-bridge`, `pubsub-security` | | Live HTTP(S), MQTT, Modbus TCP and OPC UA WoT forms | 10 | `wot-runtime` | - Reuse typed clients, generated proxies, SDK transports, schema providers and injected services rather than introducing another session manager or protocol engine. - Require host enablement plus exact caller/session/secret/network grants. Protected generic Call/Write/node-management/history/file paths enforce the same policy. - Bind classifications, dispatches, file handles and historical cursors to actual UA generations. Recovery cannot retarget an old handle or authorized mutation. Preserve acknowledged results after late cancellation; do not imply atomicity or retry business commands. - Use opaque secret-store references, explicit writable-store registration, issuer/resource/caller binding and reserved capacity before issuance. Report remote success/local persistence failure as partial completion; redact provider-controlled diagnostic text. - Bound new named runtimes to eight per host, two per caller, five-minute idle expiry and a thirty-minute absolute lease by default. Pending/closing resources consume quota; failed cleanup remains visible. Credential invalidation and session recovery close dependent runtimes. - Keep document planning separate from execution, artifacts root-confined and real JSON inputs typed. Preserve old profile ordinals while widening the set to 64 bits. CI grades fully enabled privileged catalogues rather than connection-only views. **Limitations:** live Kafka remains explicitly unavailable because the backend cannot enforce policy on broker-discovered connections; configuration/schema/capability inspection stays available. The latest public Dekaf v1.23.5 was also checked and its DNS injection remains internal. No private-API workaround or bootstrap-only security claim was added. Full legacy Core registration retains its documented JSON-reflection limitation: native tests isolate its four connection descriptors and validate the expanded production registrations, not whole-host NativeAOT support. ## Related Issues - Fixes #4730. ## Checklist _Put an `x` in the boxes that apply. You can complete these step by step after opening the PR._ - [ ] I have signed the [CLA](https://opcfoundation.org/license/cla/ContributorLicenseAgreementv1.0.pdf) and read the [CONTRIBUTING](https://github.com/OPCFoundation/UA-.NETStandard/blob/master/CONTRIBUTING.md) doc. - [x] I have added tests that prove my fix is effective or that my feature works and increased code coverage. - [x] I have added all necessary documentation. - [x] I have verified that my changes do not introduce (new) build or analyzer warnings. - [ ] I ran **all** tests locally using the **UA.slnx** solution against at least .net **framework** and .net **10**, and all passed. - [ ] I fixed **all** failing and flaky tests in the CI pipelines and **all** CodeQL warnings. - [x] I have addressed **all** PR feedback received.
1.8 KiB
OPC UA Asset Management Basics MCP tools
Embeddable Model Context Protocol tools over Opc.Ua.AMB.Client (OPC 10000-110).
Targets .NET 8, 9 and 10. No server assembly dependency is required.
services.AddOpcUaMcpCore();
services.AddOpcUaMcpAmb();
services.AddMcpServer().WithOpcUaAmbTools(McpToolProfile.Amb);
The amb profile supplies 12 tools and deduplicated connection tools. It can be
composed with other profiles through McpToolProfileSet, or selected by Full.
Every operation resolves its current named session. Discovery and collection
reads expose live pagination; observations have finite duration and item limits.
Remote asset references are returned without following them.
Asset-ID writes, condition acknowledgement, and documentation-link add, remove and write operations are explicit tools. They require the server's authorization and report OPC UA failures as MCP errors. Read and observation tools never issue these commands. There is no invented AMB history interface.
Arguments and results
Pass the discovered assetNodeId and optional sessionName to amb_read_asset:
{
"assetNodeId": "ns=2;s=Asset1",
"facet": "Identification",
"sessionName": "plant"
}
The finite facet selector includes Identification, HealthAlarms,
Maintenance, Documentation and Snapshot. Collection facets are paged;
snapshots are sequential live reads, not atomic plant snapshots.
amb_acknowledge requires the exact condition NodeId and base64 event ID
returned by a read or observation. Remote alias/sub-asset identities are
preserved but are not followed.
See the tool catalogue for tool behavior and the AMB guide for the underlying client model.