Add Zeeker legal dataset configuration

[houfu]

Summary

Adds Zeeker to regulatory-legal/.mcp.json — a read-only remote MCP server exposing four curated Singapore legal datasets from data.zeeker.sg. Addresses the "regulatory primary sources from official registers" gap noted in CONNECTORS.md, scoped to Singapore.

The change

Single insertion in mcpServers:

• Endpoint: https://mcp.zeeker.sg/mcp
• Transport: streamable HTTP (MCP 2025-06-18)
• Auth: none (anonymous tier)
• recommendedCategories byte-identical to upstream main

What it exposes

Four datasets — judgments (eLitigation), PDPC enforcement decisions and guidelines, SG government newsroom press releases (MinLaw, PDPC, ACRA, IPOS, MOM, AGC, CCS, Judiciary), and sglawwatch commentary — surfaced through six tools: list_databases, list_tables, describe_table, search, query_table, fetch. Full tool docs: https://mcp.zeeker.sg/docs/tools/. README with example agent workflows (PDPC lookup, cross-database commentary search, newsroom monitoring): https://github.com/houfu/zeeker-mcp/blob/main/README.md.

Each response is wrapped in a citation-ready envelope: provenance.source = data.zeeker.sg, per-row _citation, heavy text isolated in retrieved_content with inline _policy license re-disclosure, and the canonical injection-resistance trailer on every tool description. Details: https://mcp.zeeker.sg/docs/injection-resistance/.

Operational notes

• Rate limits: anonymous tier, 20 burst / 60 per minute / 5,000 per IP per 24h, structured rate_limited error with retry_after_ms — https://mcp.zeeker.sg/docs/rate-limits/
• Privacy: 8 log fields, 30-day retention, no cookies, no user tracking, no upstream response caching — https://mcp.zeeker.sg/privacy

Validation

• ✓ Field order type → url → title → description; key name (Zeeker) equals title
• ✓ type is "http" (not "streamable-http")
• ✓ recommendedCategories byte-identical to upstream main
• ✓ python -m json.tool < regulatory-legal/.mcp.json parses cleanly; scripts/lint-tool-scope.py exits 0
• ✓ End-to-end probe of deployed https://mcp.zeeker.sg/mcp (initialize, tools/list, one tools/call per tool): https://github.com/houfu/zeeker-mcp/blob/main/tests/manual/PHASE9-PR-PROBE.md — verified 2026-05-17 from SG and independently corroborated from Anthropic's network (Claude Code WebFetch) for /docs/, /privacy, /healthz. No IP allowlist.

Note: scripts/validate.py is the managed-agent worker-output schema validator (validate.py <output.json> <schema.json>) and isn't applicable to .mcp.json contributions — happy to be corrected.

Scope

regulatory-legal only. Adding to law-student / legal-clinic deferred to a follow-up for smaller review surface. recommendedCategories untouched; a singapore-law tag can be proposed separately if reviewers want one.

CLA

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[github-actions]

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[houfu]

I have read the CLA Document and I hereby sign the CLA

[houfu]

Recheck