abap2UI5
io.github.abap2UI5/mcp-server
About abap2UI5
abap2UI5 is an MCP server published by the GitHub account abap2UI5. abap2UI5 dev loop for AI agents: validate views, screenshot, deploy and run apps - no SAP system
It runs on your own machine: your AI client starts it from the npm package @abap2ui5/mcp-server at version 1.0.0.
It asks for 2 secrets: A2UI5_MCP_SYSTEM_PASSWORD and GITHUB_TOKEN. Give it a key with the least access that still works.
Version 1.0.0 was published on 14 October 2026, and the source code is public, so you can read it before installing.
Written from the registry entry. 9 automated checks on the registry entry and the package code: 6 pass, 1 warn, 0 fail, 2 info. How we check.
What it asks for
| Variable | Required | Secret | Description |
|---|---|---|---|
AI_VIEW_CHECK_HOME | No | No | Checkout or install of @abap2ui5/linter (validate_view, fix_view, screenshot_view). Default: the peer npm installs beside the server. A set value is authoritative. |
A2UI5_HOME | No | No | abap2UI5 framework checkout (app_guide, api_reference, pitfalls; backend when present). Default: ../abap2UI5, else the GitHub mirror and the npm runtime. |
SAMPLES_CONTROLS_HOME | No | No | samples-controls checkout (capabilities, examples, generation_rules, scope_of, UI5 for screenshots). Default: ../samples-controls, else the GitHub mirror. |
SAMPLES_HOME | No | No | abap2UI5/samples checkout, one of the catalogues examples searches. Default: ../samples, else the GitHub mirror. |
SAMPLES_STACK_HOME | No | No | abap2UI5/samples-stack checkout (OData, RAP, APC, launchpad samples). Default: ../samples-stack, else the GitHub mirror. |
APP_TEMPLATE_HOME | No | No | abap2UI5/app-template checkout that scaffold_app serves and add_agent_setup executes. Default: ../app-template, else the GitHub mirror. |
DOCS_HOME | No | No | abap2UI5/docs checkout that docs_search reads. Default: ../docs, else the GitHub mirror. |
ABAP_CLOUD_GUI_HOME | No | No | abap2UI5-addons/abap-cloud-gui checkout (with npm ci done) whose report2cloud converter migrate_report runs. Default: ../abap-cloud-gui; no mirror. |
POPUPS_HOME | No | No | abap2UI5-addons/popups checkout whose popups migrate_report with deploy: true writes into the dev sandbox beside the converted class. Default: .deps/popups of the abap-cloud-gui checkout, ../popups beside it, then its build/popups. |
OPENUI5_SRC | No | No | OpenUI5 source checkout scope_of reads the JSDoc from (via samples-controls). Default: ../fork-openui5 next to samples-controls. |
A2UI5_MCP_WORKSPACE | No | No | Where the npm backend installs, the dev sandbox lives and a framework clone lands. Default: ~/.abap2ui5-mcp. |
A2UI5_MCP_BACKEND | No | No | Which backend runs the apps: npm (the @abap2ui5/node-runtime package, even beside a checkout) or clone (clone the framework). Default: decided per call. |
A2UI5_MCP_RUNTIME_VERSION | No | No | Pin the @abap2ui5/node-runtime release (X.Y.Z) the npm backend installs. Default: the registry's latest. |
A2UI5_MCP_PORT | No | No | Port of the local backend run_app boots against. Default: 3000. |
A2UI5_MCP_UI | No | No | Whether app_start/app_describe/app_act declare their MCP Apps screen (ui://abap2ui5/app-screen): auto (default - when the client advertises the io.modelcontextprotocol/ui extension), on, off. |
A2UI5_MCP_APP_FORMAT | No | No | The default answer format of the app tools: snapshot (default) or adaptive-card (the snapshot plus an Adaptive Card 1.5 as an embedded resource, for card-rendering hosts). |
A2UI5_MCP_OFFLINE | No | No | Set to 1 for no network: no UI5 CDN fallback, no GitHub mirror, no registry lookup. |
A2UI5_MCP_REMOTE | No | No | Set to 0 to switch off the read-only GitHub mirror used when no checkout is found. |
A2UI5_MCP_REMOTE_DIR | No | No | Cache directory of the GitHub mirror. Default: <tmp>/abap2ui5-mcp-remote. |
A2UI5_MCP_REMOTE_TTL_MS | No | No | How long a mirrored copy is used before it is refreshed, in milliseconds. Default: one day. |
A2UI5_MCP_UI5_CACHE_MB | No | No | How many MB of UI5 answers from the CDN (sdk.openui5.org) run_app and interact_app keep in memory across calls, so a second boot does not download them again. 0 switches the cache off. Default: 64. |
A2UI5_MCP_RENDER_PAGES | No | No | Pages (Chromium tabs) of validate_view's warm render gate, which concurrent calls queue on. Default: 2 (1 to 8). |
A2UI5_MCP_CHROMIUM | No | No | Chromium binary for run_app and interact_app. Default: CHROMIUM_BIN, Playwright's managed browser, then a system chromium. |
A2UI5_MCP_SCREENSHOT_DIR | No | No | Where run_app and interact_app write their PNGs (the newest 50 are kept) and build_backend its log. Default: <tmp>/abap2ui5-mcp-screenshots. |
A2UI5_MCP_PREBUILT_URL | No | No | Where build_backend mode prebuilt downloads the backend from. Default: the framework's release asset. |
A2UI5_MCP_LINT_WORKER | No | No | Set to 0 to run every lint as a fresh abaplint process. Default: a long-lived worker keeps @abaplint/core with the framework parsed and lints a deploy in milliseconds (the CLI runs whenever the worker cannot stand in for it). |
A2UI5_MCP_LINT_IDLE_MS | No | No | How long the warm lint worker (about 300 MB with the framework parsed) is kept without a request before it exits, in milliseconds; the next lint starts a fresh one. 0 keeps it for the server's life. Default: 10 minutes. |
A2UI5_MCP_LINT_TIMEOUT_MS | No | No | Hard timeout of the abaplint run, in milliseconds. Default: 5 minutes. |
A2UI5_MCP_SCOPE_TIMEOUT_MS | No | No | Hard timeout of scope_of, in milliseconds. Default: 5 minutes. |
A2UI5_MCP_BUILD_TIMEOUT_MS | No | No | Hard timeout of a build, the prebuilt download and the npm install, in milliseconds. Default: 30 minutes. |
A2UI5_MCP_UNIT_TIMEOUT_MS | No | No | Hard timeout of the ABAP Unit runner, in milliseconds. Default: 10 minutes. |
A2UI5_MCP_SYSTEM_URL | No | No | Switches on the SYSTEM MODE: the app tools against this real SAP system instead of the sandbox loop. The launch URL, e.g. https://host:44300/sap/bc/z2ui5?app_start={class}&sap-client=100. |
A2UI5_MCP_SYSTEM_USER | No | No | System mode: the SAP user the app tools log on with (Basic authentication). |
A2UI5_MCP_SYSTEM_PASSWORD | No | Yes | System mode: the password of A2UI5_MCP_SYSTEM_USER. Or A2UI5_MCP_SYSTEM_PASSWORD_CMD, to keep it out of the configuration. |
A2UI5_MCP_SYSTEM_PASSWORD_CMD | No | No | System mode: a shell command that prints the password (a keychain lookup) - instead of A2UI5_MCP_SYSTEM_PASSWORD. |
A2UI5_MCP_SYSTEM_INSECURE_TLS | No | No | System mode: set to 1 to accept a certificate that cannot be verified. NODE_EXTRA_CA_CERTS with the CA is the better fix. |
GITHUB_TOKEN | No | Yes | Optional token sent to api.github.com only, to raise the rate limit of the docs tree listing (GH_TOKEN is read too). |
Checks
| Check | Result | Detail |
|---|---|---|
| Source repository linked | Pass | https://github.com/abap2UI5/mcp-server |
| Version pinned | Pass | Every package has an explicit version |
| Secrets requested | Info | Asks for 2 secrets: A2UI5_MCP_SYSTEM_PASSWORD, GITHUB_TOKEN |
| Known package registry | Pass | All packages come from npm, PyPI, OCI, NuGet or MCPB |
| Namespace ownership | Info | Name verified via GitHub account abap2UI5 |
| Registry text aimed at the AI | Pass | Description and settings contain no hidden characters or instructions to the AI |
| Install scripts | Pass | @abap2ui5/mcp-server@1.0.0 runs nothing at install |
| Code red flags | Warn | Reads SSH or cloud credentials (lib/contain.mjs:9: "/.ssh/id_"); Reads SSH or cloud credentials (lib/scaffold.mjs:178: "/.ssh/id_"); Reads SSH or cloud credentials (server.mjs:825: "/.ssh/id_") |
| Text aimed at the AI | Pass | No hidden characters or instructions to the AI in 53 files, including comments and the README |
Popularity & health: 47 / 100
Worked out from public numbers and our own checks, not from user reviews or ratings. It says how used and how looked-after a server is, not whether it is safe.
0 forks, 62 merged pull requests. Sources: GitHub, npm, PyPI (pypistats.org) and Hacker News (Algolia), fetched 2026-10-31.
What people say
No Hacker News threads link to its source code.
Look further: search Reddit, search Hacker News, read its GitHub issues. These are not reviews we checked.
Facts
| Registry name | io.github.abap2UI5/mcp-server |
|---|---|
| Publisher | GitHub account abap2UI5 |
| How the name is verified | Name verified via GitHub account abap2UI5. The registry ties the name prefix to that account or domain; it does not check the code. |
| Type | Local: runs on your machine from a package |
| Packages | npm @abap2ui5/mcp-server 1.0.0 (stdio) |
| Version | 1.0.0 |
| Published | |
| Last updated | |
| Source repository | https://github.com/abap2UI5/mcp-server |
| Website | https://abap2ui5.github.io/docs/advanced/mcp_server.html |
| Category | Cloud & infrastructure (assigned by keyword rule, not by hand) |
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