Umbra open SAR archive MCP server

by reesehammer·io.github.reesehammer/umbra-mcp·v0.1.2

Search, preview, and measure Umbra open SAR from any MCP client. Umbra ships no search API.

B83/100grade B

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Safety scan

B83/100

Adoption

Growing

0 stars43 downloads/wk

Reviews

Nobody has reviewed Umbra open SAR archive yet.

If you have run it, two minutes of your experience saves the next person an afternoon.

No tool declarations could be read from the package source. They show once the server is installed.

scanner v0.1.9 · 2026-09-20 · same rubric, same numbers if you re-run it

no findings

Code scan69 source files scanned25/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitystatic API keys via environment variables6/15
Maintenancelast push 3 days ago15/15
Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Overall 83/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

claude mcp add umbra-mcp -- uvx umbra-py

Is Umbra open SAR archive MCP server safe?: Mostly: it is graded B (83/100). Read the Umbra open SAR archive safety report
How do I install Umbra open SAR archive?: It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.
Does Umbra open SAR archive need an API key?: Yes. The registry entry asks for UMBRA_CANOPY_TOKEN, ANTHROPIC_API_KEY, OPENAI_API_KEY.
Is Umbra open SAR archive maintained?: The last commit was 3 days ago (2026-09-17). The latest release is v0.1.2.
What can I use instead of Umbra open SAR archive?: Servers from other publishers that do the same job: Open Library MCP server.

Same job from other publishers: the closest match first, then the best rated.

Open Library
Search books and authors on the Internet Archive's Open Library
not reviewed
Established
A

Local package. It runs on your machine, not through the gateway.

UMBRA_CANOPY_TOKENsecretCanopy 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.
UMBRA_INDEX_DBPath 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.
ANTHROPIC_API_KEYsecretEnables the two opt-in model tools, describe_scene and narrate_change. Every other tool is deterministic and calls no model.
OPENAI_API_KEYsecretAlternative provider for the same two model tools, and the encoder behind find_similar_text.

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Shows the safety grade and links back to this page. It updates itself after every scan and review.

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