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Fast MCP server for unified SAP docs search (SAPUI5, CAP, OpenUI5, wdi5) with BM25 full-text search
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Fast MCP server for unified SAP docs search (SAPUI5, CAP, OpenUI5, wdi5) with BM25 full-text search
Security Report
9.1
Low Risk9.1Low RiskValid MCP server (2 strong, 1 medium validity signals). 2 known CVEs in dependencies (0 critical, 1 high severity) Imported from the Official MCP Registry. Trust signals: trusted author (3/3 approved). 1 finding(s) downgraded by scanner intelligence.
5 files analyzed · 3 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
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How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-marianfoo-mcp-sap-docs": {
"args": [
"-y",
"mcp-sap-docs"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
MCP SAP Docs (Upstream)
An MCP server that gives AI assistants (Claude, Cursor, ChatGPT, etc.) access to SAP documentation through a unified search and fetch interface. It combines a local full-text + semantic index over git-cloned SAP docs with optional live queries to SAP Help, SAP Community, and Software Heroes — all exposed as MCP tools.
Public Hosted Endpoint
Ready to use — no setup required
Variant URL SAP Docs http://mcp-sap-docs.marianzeis.de/mcpABAP https://mcp-abap.marianzeis.de/mcp
Variants
mcp-sap-docs is the upstream repository for two MCP server variants that share one codebase and differ by configuration (MCP_VARIANT / .mcp-variant):
| Variant | Scope | Extra tools |
|---|---|---|
sap-docs | Broad SAP docs: UI5, CAP, Cloud SDK, ABAP, BTP, AI, Terraform | Discovery Center tools |
abap | ABAP-focused: ABAP keyword docs, RAP, cheat sheets, style guides | abap_lint |
Documentation Sources
Offline sources (local index, always available)
| Source | Description |
|---|---|
abap-docs-standard | Official ABAP Keyword Documentation — on-premise / full syntax |
abap-docs-cloud | Official ABAP Keyword Documentation — ABAP Cloud / BTP (restricted syntax) |
abap-cheat-sheets | Practical ABAP/RAP code snippets and examples |
abap-fiori-showcase | Annotation-driven RAP + OData V4 + Fiori Elements feature showcase |
abap-platform-rap-opensap | openSAP "Building Apps with RAP" course samples |
cloud-abap-rap | ABAP Cloud + RAP example projects |
abap-platform-reuse-services | RAP reuse services examples (number ranges, mail, Adobe Forms, …) |
sap-styleguides | SAP Clean ABAP Style Guide and best practices |
dsag-abap-leitfaden | DSAG ABAP Leitfaden (German) development guidelines |
btp-cloud-platform | SAP BTP concepts, development, security, administration |
sap-artificial-intelligence | SAP AI Core and SAP AI Launchpad documentation |
ui5 | SAPUI5 / OpenUI5 framework documentation |
cap | SAP Cloud Application Programming Model (CAP) documentation |
cloud-sdk | SAP Cloud SDK documentation |
terraform-provider-btp | SAP Terraform Provider for BTP — resources and data sources |
architecture-center | SAP Architecture Center reference architectures and guidance |
wdi5 | wdi5 (WebdriverIO + UI5) testing framework documentation |
Online sources (live queries, enabled by default)
| Source | Description |
|---|---|
| SAP Help Portal | Official SAP product documentation (broad scope) |
| SAP Community | Community blogs, Q&A, and troubleshooting posts |
| Software Heroes | ABAP/RAP articles and tutorials (EN + DE, deduplicated) |
Available Tools
Shared tools (both variants)
| Tool | Description |
|---|---|
search | Unified hybrid search (BM25 + semantic) across offline docs and optional online sources. Supports query, k, includeOnline, includeSamples, abapFlavor, sources parameters. |
fetch | Retrieve full document content by ID returned from search. |
abap_feature_matrix | Check ABAP feature availability across SAP releases (7.40–LATEST) using the Software Heroes feature matrix. |
sap_community_search | Dedicated SAP Community search via the Khoros LiQL API — returns full content of top posts. Use when search results are insufficient for specific errors or workarounds. |
sap_search_objects | Search SAP released objects (classes, interfaces, tables, CDS views, …) by name/component/type from the official SAP/abap-atc-cr-cv-s4hc release state repo. Useful for clean core compliance discovery. |
sap_get_object_details | Full release state details for a specific SAP object including clean core level (A/B/C/D), successor objects, and optional compliance verdict. |
sap-docs variant only
| Tool | Description |
|---|---|
sap_discovery_center_search | Search the SAP Discovery Center service catalog for BTP services by keyword, category, or license model. |
sap_discovery_center_service | Get comprehensive BTP service details: pricing plans, product roadmap, documentation links, and key features. Accepts a service UUID or name. |
abap variant only
| Tool | Description |
|---|---|
abap_lint | Run static code analysis on ABAP source code using abaplint. Auto-detects file type from code patterns. Returns findings with line numbers, severity, and rule keys. |
Architecture Overview
- Upstream source of truth:
mcp-sap-docs - One-way sync target:
abap-mcp-server - Search uses Hybrid BM25 + Semantic (embedding) fusion via Reciprocal Rank Fusion (RRF)
- Embeddings model:
Xenova/all-MiniLM-L6-v2(~90 MB, cached indist/models/)
Variant Selection
Resolution order:
MCP_VARIANTenvironment variable.mcp-variantfile in repo root- fallback:
sap-docs
Examples:
# Run as full sap-docs profile
MCP_VARIANT=sap-docs npm run setup
MCP_VARIANT=sap-docs npm run build
MCP_VARIANT=sap-docs npm run start:streamable
# Run as ABAP profile
MCP_VARIANT=abap npm run setup
MCP_VARIANT=abap npm run build
MCP_VARIANT=abap npm run start:streamable
Search Behavior
search performs fused retrieval over:
- Offline FTS index (local submodule content)
- Optional online sources (
includeOnline=true):- SAP Help
- SAP Community
- Software Heroes content search (EN/DE merge + dedupe)
Ranking and filtering highlights:
- Hybrid BM25 + Semantic (embedding) search — keyword and meaning, fused via RRF
- Reciprocal Rank Fusion (RRF) across offline and online sources
- Source-level boosts from metadata
includeSamplescan remove sample-heavy sourcesabapFlavor(standard/cloud/auto) filters official ABAP docs libraries while keeping non-ABAP sourcessourcescan restrict offline libraries explicitly
Hybrid Search
The offline search combines BM25 (FTS5 keyword matching) with semantic similarity
(dense embeddings via Xenova/all-MiniLM-L6-v2). This allows natural-language and
paraphrase queries to find relevant docs even when the exact keywords are missing.
Example: "how to check if a user has permission" finds AUTHORITY-CHECK docs.
Embeddings are pre-computed at build time and stored in docs.sqlite.
The model (~90 MB) is cached in dist/models/ (gitignored, in-project).
See docs/HYBRID-SEARCH.md for full details, size impact, and tuning.
Offline-Only Mode
search includes online sources by default. To run offline-only, use:
- local index/submodules only (
npm run setup+npm run build) includeOnline=falsein eachsearchrequest
Example search request body:
{
"query": "RAP draft",
"k": 8,
"includeOnline": false
}
Docker (offline-only)
Run the container with host binding and call search with includeOnline=false:
docker run --rm -p 3122:3122 \
-e MCP_VARIANT=sap-docs \
-e MCP_PORT=3122 \
-e MCP_HOST=0.0.0.0 \
mcp-sap-docs
For strict air-gapped execution, disable container networking:
docker run --rm --network none -p 3122:3122 \
-e MCP_VARIANT=sap-docs \
-e MCP_PORT=3122 \
-e MCP_HOST=0.0.0.0 \
mcp-sap-docs
Notes:
- With
--network none, online fetches are impossible by runtime isolation. - Startup may log warnings for online prefetch attempts (for example ABAP feature matrix); this does not prevent offline
searchusage.
Quick Start (Local)
npm ci
npm run setup
npm run build
Start server modes:
# MCP stdio
npm start
# HTTP status/dev server
npm run start:http
# MCP streamable HTTP
npm run start:streamable
Default ports by variant:
sap-docs: HTTP3001, streamable3122abap: HTTP3002, streamable3124
Health checks:
curl -sS http://127.0.0.1:3122/health | jq .
curl -sS http://127.0.0.1:3001/status | jq .
Use variant-specific ports when running abap profile.
Build and Setup Scripts
Script names remain shared (setup, build, start, start:streamable).
Behavior changes by variant config:
setup.shonly initializes variant-allowed submodulesbuild-indexonly includes variant-allowed librariesbuild-ftsonly indexes variant-allowed libraries
This keeps abap faster and smaller without maintaining a separate build script set.
Docker
Build image for a variant:
# sap-docs image
docker build --build-arg MCP_VARIANT=sap-docs -t mcp-sap-docs .
# abap image
docker build --build-arg MCP_VARIANT=abap -t abap-mcp-server .
Run streamable server:
# sap-docs
docker run --rm -p 3122:3122 \
-e MCP_VARIANT=sap-docs \
-e MCP_PORT=3122 \
mcp-sap-docs
# abap
docker run --rm -p 3124:3124 \
-e MCP_VARIANT=abap \
-e MCP_PORT=3124 \
abap-mcp-server
One-Way Sync to abap-mcp-server
This repository contains direct sync automation:
- Workflow:
.github/workflows/sync-to-abap-main.yml - Script:
scripts/sync-to-abap.sh
Flow:
- Push to
mcp-sap-docs/main - Workflow clones
abap-mcp-server - Tracked upstream files are synced (with exclude rules)
- ABAP overlay is applied
.mcp-variantis forced toabap- ABAP package identity is patched
- Commit is pushed to
abap-mcp-server/main
Required secret in mcp-sap-docs repo:
ABAP_REPO_SYNC_TOKEN
Commit message controls:
[skip-sync]skips sync workflow
Deployment Model
mcp-sap-docs: upstream implementation + sync triggerabap-mcp-server: deployment trigger remains push-to-main in that repository
This preserves ABAP deployment automation while keeping one shared upstream codebase.
PM2 Runtime
ecosystem.config.cjs is variant-aware and resolves:
- process names
- ports
- deploy path
from config/variants/*.json.
Validation Commands
npm run build:tsc
npm run test:url-generation
npm run test:integration
npm run test:software-heroes
npm run test:sap-objects # SAP Released Objects unit tests
# Variant-specific build checks
MCP_VARIANT=sap-docs npm run build:index
MCP_VARIANT=abap npm run build:index
MCP_VARIANT=sap-docs npm run build:fts
MCP_VARIANT=abap npm run build:fts
Additional Docs
docs/ARCHITECTURE.mddocs/DEV.mddocs/TESTS.mddocs/UPSTREAM-ONE-WAY-SYNC-IMPLEMENTATION.mdREMOTE_SETUP.md
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