{"slug": "umbra-open-sar-archive-io-github-reesehammer-umbra-mcp-0-1-1", "title": "Umbra open SAR archive (io.github.reesehammer/umbra-mcp@0.1.1)", "summary": "Umbra open SAR archive, a server that enables search, quicklook, and measurement of Umbra's open SAR archive from any MCP client, was published as v0.1.1 to the official MCP registry on 2026-08-21, distributed as umbra-py on PyPI. The server declares four environment variables, including UMBRA_CANOPY_TOKEN for authenticated commercial archive access and ANTHROPIC_API_KEY/OPENAI_API_KEY for two opt-in model tools, while all other tools are deterministic. The mcpindex gate pins tool contracts to prevent silent drift, and the tool has not yet received a clearing verdict, so agents should treat it as not-yet-cleared.", "body_md": "[← Index](/leaderboard)\n\n# Umbra open SAR archive\n\nSearch, quicklook and measure Umbra's open SAR archive from any MCP client.\n\nThe current version, v0.1.1, was published to the official MCP registry on 2026-08-21. It is distributed as umbra-py on PyPI, filed under Search by this index, and declares 4 environment variables. Removals and unreachable sources are measured across every server this index tracks, contract drift across the servers that answer in consecutive snapshots; [the index's current counts](/stats) put this record in context.\n\n## Using Umbra open SAR archive in Claude, Cursor, Gemini CLI, Cline, or Zed?\n\nMCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and **HOLDs the call** when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use **Install this server** for that).\n\nRewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less\n\n```\nuv tool install mcpindex-gate && mcpindex-config-wire\n```\n\n[method](/methodology)\n\nVerdict not yet evaluated for this tool. The semantic screen takes adversarial cases first; coverage rolls out as the corpus expands (15/150 labels to graduation). The deterministic conformance probe is built but has not yet run on the public corpus, so a recorded verdict here is REVIEW or UNVERIFIED, never a clearing ALLOW. Until a verdict is recorded, an agent should treat this tool as not-yet-cleared and fall back to its own checks. Method: [the eval, four-state verdict, honest limits](/methodology).\n\nOwn this server? [Screen its description →](/screen)\n\n## That verdict was true at screening time (snapshot 2026-08-21).\n\nContracts can change after screening, with no version bump. The gate pins Umbra open SAR archive’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.\n\n[See your first HOLD in 2 minutes →](/guides/install-the-gate-first-hold)\n\nRelated: [how to trust an MCP server](/guides/how-to-trust-an-mcp-server) · [screen before install](/guides/screen-mcp-server-before-install) · [silent contract drift](/guides/mcp-silent-contract-drift)\n\n`UMBRA_CANOPY_TOKEN`\n\nCanopy API token. Set it and the same search tools query Umbra's authenticated commercial archive instead of the open bucket; leave it unset for the open data, which needs no credentials.\n\n`UMBRA_INDEX_DB`\n\nPath to a local catalog index (built with 'umbra index build' or fetched with 'umbra index fetch'). Without one the server walks the public bucket per search, which is correct but slow.\n\n`ANTHROPIC_API_KEY`\n\nEnables the two opt-in model tools, describe_scene and narrate_change. Every other tool is deterministic and calls no model.\n\n`OPENAI_API_KEY`\n\nAlternative provider for the same two model tools, and the encoder behind find_similar_text.\n\n[methodology](/methodology)\n\n[YTDL RMCPai.dinglebear/rytdl](/server/ai-dinglebear-rytdl)\n\nyt-dlp search, download, metadata, delivery, and Plex workflows over MCP and CLI.\n\n[Fodda Topic & Trend Researchai.fodda/topic-research](/server/ai-fodda-topic-research)\n\nTrend, stats & insight search across PSFK expert graphs with citable sources.\n\n[io.github.ref-tools/ref-tools-mcpio.github.ref-tools/ref-tools-mcp](/server/io-github-ref-tools-ref-tools-mcp)\n\nToken efficient search for coding agents over public and private documentation.", "url": "https://wpnews.pro/news/umbra-open-sar-archive-io-github-reesehammer-umbra-mcp-0-1-1", "canonical_source": "https://mcpindex.ai/server/io-github-reesehammer-umbra-mcp", "published_at": "2026-08-21 22:11:22+00:00", "updated_at": "2026-08-21 23:14:13.463942+00:00", "lang": "en", "topics": ["ai-tools", "developer-tools"], "entities": ["Umbra", "MCP", "PyPI", "Claude", "Cursor", "Gemini CLI", "Cline", "Zed"], "alternates": {"html": "https://wpnews.pro/news/umbra-open-sar-archive-io-github-reesehammer-umbra-mcp-0-1-1", "markdown": "https://wpnews.pro/news/umbra-open-sar-archive-io-github-reesehammer-umbra-mcp-0-1-1.md", "text": "https://wpnews.pro/news/umbra-open-sar-archive-io-github-reesehammer-umbra-mcp-0-1-1.txt", "jsonld": "https://wpnews.pro/news/umbra-open-sar-archive-io-github-reesehammer-umbra-mcp-0-1-1.jsonld"}}