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Nomic Atlas MCP by usefulapi

by usefulapi.io · remote · no sign-in to list tools · v1.16.3 · published by io.usefulapi

Semantic nearest-neighbour search over your datasets, plus indices and projections.

Changes · 1
CompareRegistry entry

9 tools: 1 change things and 8 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http nomic-atlas https://nomic-atlas.usefulapi.io/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

9 tools

Changes things 1Claude Code: ask
  • nomic_nearest_neighbors_by_idSemantic search: given the ids of records already in a dataset, return their nearest neighbours in embedding space, with distances.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Semantic search: given the ids of records already in a dataset, return their nearest neighbours in embedding space, with distances. This is what Atlas is for — finding what resembles what across unstructured data. Needs a BUILT index; if the map is still building the call fails with a 500, so check nomic_get_index_job. Atlas: POST /v1/project/data/get/nearest_neighbors/by_id.

    Annotations the server declares

    • title: Find similar records
    • readOnlyHint: true
Only reads 8Claude Code: allow
  • nomic_get_datasetFetch a dataset (Atlas calls it a project) by id — its schema, size, indices and projections.No findings

    Why it is in this group

    • The name "nomic_get_dataset" says "get": a word for reading.
    Description, as the server wrote it
    Fetch a dataset (Atlas calls it a project) by id — its schema, size, indices and projections. Atlas: GET /v1/project/{id}.

    Annotations the server declares

    • title: Get a dataset by id
    • readOnlyHint: true
  • nomic_get_dataset_by_slugFetch a dataset by organisation slug and dataset slug — the human-readable path, and usually easier than finding the UUID.No findings

    Why it is in this group

    • The name "nomic_get_dataset_by_slug" says "get": a word for reading.
    Description, as the server wrote it
    Fetch a dataset by organisation slug and dataset slug — the human-readable path, and usually easier than finding the UUID. Atlas: GET /v1/project/{organization_slug}/{project_slug}.

    Annotations the server declares

    • title: Get a dataset by name
    • readOnlyHint: true
  • nomic_get_index_jobFetch the status of an index-building job.No findings

    Why it is in this group

    • The name "nomic_get_index_job" says "get": a word for reading.
    Description, as the server wrote it
    Fetch the status of an index-building job. Atlas indexes take time to build, and a vector search against an unbuilt map fails — this is how you tell which it is. Atlas: GET /v1/project/index/job/{job_id}.

    Annotations the server declares

    • title: Get an index job
    • readOnlyHint: true
  • nomic_get_organizationFetch an organisation by slug, with the datasets it holds.No findings

    Why it is in this group

    • The name "nomic_get_organization" says "get": a word for reading.
    Description, as the server wrote it
    Fetch an organisation by slug, with the datasets it holds. Atlas: GET /v1/organization/{slug}.

    Annotations the server declares

    • title: Get an organisation
    • readOnlyHint: true
  • nomic_get_projection_schemaFetch the field schema of one projection — the columns available on its records.No findings

    Why it is in this group

    • The name "nomic_get_projection_schema" says "get": a word for reading.
    Description, as the server wrote it
    Fetch the field schema of one projection — the columns available on its records. Atlas: GET /v1/project/projection/{projection_id}/schema.

    Annotations the server declares

    • title: Get a projection's schema
    • readOnlyHint: true
  • nomic_get_tag_statusCheck whether a tag has finished computing its membership.No findings

    Why it is in this group

    • The name "nomic_get_tag_status" says "get": a word for reading.
    Description, as the server wrote it
    Check whether a tag has finished computing its membership. A tag that is still building returns partial results. Atlas: GET /v1/project/projection/tags/status.

    Annotations the server declares

    • title: Get a tag's status
    • readOnlyHint: true
  • nomic_get_userFetch the account the API key belongs to, including the organisations it can access.No findings

    Why it is in this group

    • The name "nomic_get_user" says "get": a word for reading.
    Description, as the server wrote it
    Fetch the account the API key belongs to, including the organisations it can access. Start here — the organisation slug feeds the other tools. Atlas: GET /v1/user.

    Annotations the server declares

    • title: Get the current user
    • readOnlyHint: true
  • nomic_list_tagsList the tags defined on one projection — the labelled selections a person made on the map.No findings

    Why it is in this group

    • The name "nomic_list_tags" says "list": a word for reading.
    Description, as the server wrote it
    List the tags defined on one projection — the labelled selections a person made on the map. Atlas: GET /v1/project/projection/tags/get/all.

    Annotations the server declares

    • title: List a projection's tags
    • readOnlyHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.16.3. Values in angle brackets are yours to fill in.

claude mcp add --transport http nomic-atlas https://nomic-atlas.usefulapi.io/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__nomic-atlas__nomic_get_user",
      "mcp__nomic-atlas__nomic_get_organization",
      "mcp__nomic-atlas__nomic_get_dataset",
      "mcp__nomic-atlas__nomic_get_dataset_by_slug",
      "mcp__nomic-atlas__nomic_get_index_job",
      "mcp__nomic-atlas__nomic_get_projection_schema",
      "mcp__nomic-atlas__nomic_list_tags",
      "mcp__nomic-atlas__nomic_get_tag_status"
    ],
    "ask": [
      "mcp__nomic-atlas__nomic_nearest_neighbors_by_id"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as nomic-atlas. Review it before you use it.