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Calypso Multimodal RAG MCP

NPM · @CALYPSOHQ/MULTIMODAL-RAG-MCP-SERVER · SCANNED SEP 20

Calypso multimodal RAG for grounded answers from docs, images, charts, and knowledge.

+10 this week 76 Trust /100
Trust breakdown (7 categories)

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →

Supply Chain Security81
  • No malware found by supply-chain analysis.Pass
  • CVE check failed: a known high-severity CVE affects undici 5.29.0, a direct dependency. A fixed version is available. View diagnostics → Fail
  • No install/post-install scripts declared.Pass
  • 39 of 125 dependencies flagged as unhealthy (1 deprecated). View diagnostics → Partial
Provenance & Transparency48
  • Source repository is publicly reachable at the declared URL. View diagnostics → Pass
  • Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
  • Clear OSI-approved license (MIT).Pass
  • Actively maintained (last published 22 days ago).Pass
  • Publishes a security disclosure policy (SECURITY.md).Pass
Schema Quality & AI Usability80
  • 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
  • AI-judged instruction clarity (excellent).Pass
  • Context-footprint check failed: tool/resource definitions use about 2709 tokens (~193/item across 14 items; 9 tools + 5 resources), over budget; trim descriptions and params. See how to fix → Fail
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management69
  • Stability check failed: the tool surface changed between 2.1.0 and 3.0.0: 1 tool removals, 0 breaking changes, 3 additions. See how to fix → Fail
Tool Coverage100
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 100% of tool parameters carry a description.Pass
  • Structured output schemas are declared (22% of tools); any adoption earns full credit.Pass
Tool Safety100
  • No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
  • We read all 9 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
  • An AI judge read all 10 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
  • Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Install

How do I install the Calypso Multimodal RAG MCP server?

Calypso Multimodal RAG MCP runs locally as an npm package, launched with npx -y @calypsohq/multimodal-rag-mcp-server. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

npm · @calypsohq/multimodal-rag-mcp-server

# add to Claude Code
claude mcp add calypso-so-multimodal-rag-mcp-server -- npx -y @calypsohq/multimodal-rag-mcp-server
// .cursor/mcp.json
{
  "mcpServers": {
    "calypso-so-multimodal-rag-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@calypsohq/multimodal-rag-mcp-server"
      ]
    }
  }
}
// .vscode/mcp.json
{
  "servers": {
    "calypso-so-multimodal-rag-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@calypsohq/multimodal-rag-mcp-server"
      ]
    }
  }
}
# add to Codex CLI
codex mcp add calypso-so-multimodal-rag-mcp-server -- npx -y @calypsohq/multimodal-rag-mcp-server
// opencode.json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "calypso-so-multimodal-rag-mcp-server": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@calypsohq/multimodal-rag-mcp-server"
      ],
      "enabled": true
    }
  }
}
# add to OpenClaw
openclaw mcp add calypso-so-multimodal-rag-mcp-server --command npx --arg -y --arg @calypsohq/multimodal-rag-mcp-server
# ~/.hermes/config.yaml
mcp_servers:
  calypso-so-multimodal-rag-mcp-server:
    command: "npx"
    args: ["-y", "@calypsohq/multimodal-rag-mcp-server"]
// ~/.netclaw/config/netclaw.json
{
  "McpServers": {
    "calypso-so-multimodal-rag-mcp-server": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@calypsohq/multimodal-rag-mcp-server"
      ]
    }
  }
}
# add to Vellum
assistant mcp add calypso-so-multimodal-rag-mcp-server -t stdio -c npx -a -y @calypsohq/multimodal-rag-mcp-server
// mcp.json
{
  "mcpServers": {
    "calypso-so-multimodal-rag-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@calypsohq/multimodal-rag-mcp-server"
      ]
    }
  }
}
Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 19 Sept 26 −2

    No change was recorded against any check on this day. Stability & Change Management went from 86 to 66.

  • 17 Sept 26 +12

    No change was recorded against any check on this day. Stability & Change Management went from 0 to 82.

  • 29 Aug 26 +5
    • Known CVEs: unverified → fail security
    • Dependency health: unverified → 0.86 functional
  • 28 Aug 26 −5
    • Known CVEs: fail → unverified security
    • Stability: fail → unverified security
    • Tool safety: pass → unverified security
    • Schema quality: 167 → 193 functional
    • Tool coverage: 29% → 22% functional
    • Schema quality: 167 → 194 functional
    • Dependency health: 0.86 → unverified functional
    • Capabilities: pass → unverified functional
    • Tool coverage: 100 → unverified functional
    • Schema quality: 100 → unverified functional
    • Package version: 2.1.0 → 3.0.0 functional
    • Package version: 2.1.0 → 2.3.1 functional
  • 26 Aug 26 −2
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 24 Aug 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 13 to 17.

  • 20 Aug 26 0
    • CVE-2026-16729 affects this package: high security
    • CVE-2026-15157 affects this package: high security
    • CVE-2026-22036 affects this package: high security
    • CVE-2026-1527 affects this package: high security
    • CVE-2026-1525 affects this package: high security
    • CVE-2026-1526 affects this package: high security
    • CVE-2026-11525 affects this package: high security
    • CVE-2026-9679 affects this package: high security
    • CVE-2026-2229 affects this package: high security
    • CVE-2026-6733 affects this package: high security
    • CVE-2026-16728 affects this package: high security
    • CVE-2026-12151 affects this package: high security
    • Known CVEs: unverified → fail security
    • Dependency health: unverified → 0.86 functional
  • 19 Aug 26 0
    • CVE-2026-16729 affects this package: high security
    • CVE-2026-15157 affects this package: high security
    • CVE-2026-22036 affects this package: high security
    • CVE-2026-1527 affects this package: high security
    • CVE-2026-1525 affects this package: high security
    • CVE-2026-1526 affects this package: high security
    • CVE-2026-11525 affects this package: high security
    • CVE-2026-9679 affects this package: high security
    • CVE-2026-2229 affects this package: high security
    • CVE-2026-6733 affects this package: high security
    • CVE-2026-16728 affects this package: high security
    • CVE-2026-12151 affects this package: high security
    • Known CVEs: pass → unverified security
    • Stability: 0.77 → unverified security
    • Stability: 0.77 → fail security
    • Known CVEs: pass → fail security
    • Schema quality: 1712 → 2010 functional
    • Dependency health: 0.85 → unverified functional
    • Capabilities: pass → unverified functional
    • Tool coverage: 100 → unverified functional
    • Schema quality: 100 → unverified functional
    • Schema quality: 1712 → 1446 functional
    • First check of Tool coverage: 29 functional
    • Package version: 1.0.37 → 2.1.0 functional
    • Package version: 1.0.37 → 2.0.0 functional
Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 20 Sept 2026 · Analysed npm/@calypsohq/multimodal-rag-mcp-server@3.0.0

Provenance No attestation

The registry publishes no build provenance for this version, so there is nothing to verify.

Result No attestation
Ecosystem npm

Background: How many MCP packages publish verified provenance →

Vulnerabilities 12 findings
ID CVE Severity Vector Fix available
GHSA-2mjp-6q6p-2qxm CVE-2026-1525 medium CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L yes
GHSA-35p6-xmwp-9g52 CVE-2026-6733 low CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N yes
GHSA-4992-7rv2-5pvq CVE-2026-1527 medium CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N yes
GHSA-8xcm-r25x-g524 CVE-2026-16728 medium CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N yes
GHSA-g8m3-5g58-fq7m CVE-2026-11525 low CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N yes
GHSA-g9mf-h72j-4rw9 CVE-2026-22036 medium CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H yes
GHSA-m8rv-5g2x-5cg5 CVE-2026-15157 medium CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N yes
GHSA-p88m-4jfj-68fv CVE-2026-9679 medium CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N yes
GHSA-v3r7-h72x-cjcm CVE-2026-16729 medium CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N yes
GHSA-v9p9-hfj2-hcw8 CVE-2026-2229 high CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H yes
GHSA-vrm6-8vpv-qv8q CVE-2026-1526 high CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H yes
GHSA-vxpw-j846-p89q CVE-2026-12151 high CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H yes

Background: What a vulnerability scan can and cannot prove →

Dependencies 125 packages
Packages resolved 125
Deprecated 1
Stale 38
Tree resolution Complete

Background: SBOMs and build attestations, explained →

MCP tools · 9 exposed · ~2,591 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →

Tool Tokens
calypso-add-website ~338

[CALYPSO ADD WEBSITE] Ingests a website URL as bucket-scoped knowledge. One shot: the Calypso backend crawls the URL, generates the title, summary, and tags, persists the website as knowledge, and assigns it to the given buckets in the same call. The normalized URL is the create identity per team: a matching Idempotency-Key replays the existing website, and a collision without one is a typed `website_url_exists` conflict. Requires the `knowledge:website:create` capability (explicit-only) and a backend with POST /v1/knowledge/websites deployed.

NameTypeReqDescription
bucketstringConvenience single bucket slug. Required unless bucketIds or bucketSlugs is provided.
bucketIdsarrayBucket ids to assign the website to. Required unless bucketSlugs or bucket is provided.
bucketSlugsarrayBucket slugs to assign the website to. Required unless bucketIds or bucket is provided.
createMissingBucketsbooleanIf true, create missing bucket slugs before assignment.
idempotencyKeystringOptional Idempotency-Key; replays return the existing website.
preferredLanguagestringPreferred language for the generated title/summary/tags (e.g. 'en', 'es').
tagsHintstringOptional comma-separated hint for generated tags.
titlestringOptional title override for the generated analysis.
urlstringyesWebsite URL to ingest. Normalized server-side; https:// is assumed when the scheme is missing.

No output schema declared.

No examples provided.

calypso-agent ~370

[CALYPSO RAG AGENT] Sends each prompt directly to the Calypso agent using the full conversation context. Use this when you want Calypso knowledge retrieval and grounded answers from the RAG backend. Typical requests: - "Summarize the key points from our onboarding documentation" - "What does the knowledge base say about campaign approval rules?" - "Compare the documented indexing flow with the retrieval flow" - "Answer using the uploaded file ids: [\"file_123\"]" Responses API behavior: - First turns start a named Calypso conversation via `/v1/responses`. - Follow-up turns chain with `previous_response_id` so the backend owns conversation state. - When `fileIds` are provided, the MCP uses `rag_policy` retrieval semantics instead of inline attachment stuffing. MCP session behavior: - This tool maintains a stable conversation id in the background for multi-turn retrieval context. - Use `/new` to start a fresh conversation and clear the current context window. Quick commands (examples): - "Summarize the latest indexed knowledge about WhatsApp templates" - "Find the source of truth for campaign approval behavior" - "Start a new topic" (or use `/new`) The authoritative, refreshable variant list lives in the `calypso://rag-agent-models` resource — do not cache this description.

NameTypeReqDescription
fileIdsarrayOptional uploaded agent-store `file_id` values to attach with `rag_policy` retrieval semantics.
modelstringOptional Calypso agent model variant. Defaults to `calypso-agent`. Read the calypso://rag-agent-models resource for the current list.
promptstringyesYour request. Include context, constraints, and desired output.

No output schema declared.

No examples provided.

calypso-create-agent ~229

[CALYPSO CREATE AGENT] Creates a Calypso agent variant bound to one or more buckets. The success payload leads with `model` — pass it straight to calypso-agent. Bucket bindings are validated server-side (`bucket_not_found` for unknown or archived buckets), agent ids are slug-normalized (`agent_id_exists` on collision), and the plan's agent cap is enforced (`agent_limit_reached` when full). Requires the `rag:agent:create` capability and a backend with POST /v1/rag-agent/agents deployed.

NameTypeReqDescription
agentIdstringOptional agent id; slug rules, server-normalized.
bucketIdsarrayBucket ids to bind. Provide bucketIds and/or bucketSlugs.
bucketSlugsarrayBucket slugs to bind (resolved server-side).
idempotencyKeystringOptional Idempotency-Key; replays return the existing agent.
instructionsstringOptional agent instructions.
namestringOptional display name.
NameTypeReqDescription
agent_idstring
modelstring

No examples provided.

calypso-create-bucket ~166

[CALYPSO CREATE BUCKET] Creates an empty bucket to upload files into later. Use this for the create-then-fill workflow; uploads can also create buckets implicitly via bucketSlugs + createMissingBuckets. The server normalizes the slug and returns 409 `bucket_slug_exists` on collision. Requires the `knowledge:bucket:create` capability on the API key and a backend with POST /v1/knowledge/buckets deployed.

NameTypeReqDescription
descriptionstringOptional description.
idempotencyKeystringOptional Idempotency-Key; replays return the existing bucket.
namestringyesHuman-readable bucket name.
slugstringOptional slug; server-normalized. Collision -> bucket_slug_exists.
NameTypeReqDescription
idstring
namestring
slugstring
statusstring

No examples provided.

calypso-get-file ~146

[CALYPSO GET FILE] Fetches one knowledge file's metadata and indexing status by file id. Use this to resolve the opaque `fileIds` returned by calypso-list-buckets into filename, mime type, size, indexing status, and per-bucket sync state. Pass verify=true to also ask the provider (Gemini) for ground truth about the indexed document — slower, but authoritative when status looks stale.

NameTypeReqDescription
fileIdstringyesKnowledge file id, e.g. from calypso-list-buckets fileIds.
verifybooleanIf true, verify against the provider (?verify=gemini). Slower.

No output schema declared.

No examples provided.

calypso-list-buckets ~109

[CALYPSO LIST BUCKETS] Lists buckets for the team tied to the configured Calypso API key. Use this before uploads when you need bucket ids, slugs, names, member counts, or bucket-store readiness. This complements agent model discovery: model discovery shows which buckets are bound to each agent variant, while this tool lists all buckets for the API key team.

NameTypeReqDescription
includeArchivedbooleanIf true, include archived buckets. Defaults to false.

No output schema declared.

No examples provided.

calypso-search ~195

[CALYPSO SEARCH] Retrieval-only search over the team's grounded knowledge: returns the chunks and sources an agent answer would cite, without a synthesized answer. Use this when the caller wants raw evidence to reason over. Scope defaults to the default Calypso agent; pass `agent` for a named variant (calypso-agent:{agent_id}) or `buckets` (ids or slugs, up to 5) to search specific buckets directly — not both.

NameTypeReqDescription
agentstringAgent model id whose retrieval scope to search (calypso-agent or calypso-agent:{agent_id}). Mutually exclusive with buckets.
bucketsarrayBucket ids or slugs to search directly. Mutually exclusive with agent.
maxResultsintegerMaximum results to return (1-20, default 10).
querystringyesThe search query.

No output schema declared.

No examples provided.

calypso-upload-file ~653

[CALYPSO UPLOAD FILE] Uploads a file into the durable bucket-backed knowledge store and indexing pipeline. Use this when you want a file indexed into the broader knowledge corpus instead of attached directly to a single RAG chat turn. This tool returns file and task metadata. A bucket destination is required: pass bucketIds, bucketSlugs, or bucket. Choose exactly one file source. Use `filePath` when this MCP server runs locally and can read the path, including Claude Desktop or Cursor configs that launch this package with npx. Use `contentBase64` for hosted or remote MCP clients, browser uploads, generated in-memory content, or remote sandbox files that this MCP process cannot read. Use `sourceUrl` for a public http(s) file URL — the Calypso backend fetches it directly (public hosts only, 25MB cap), so the bytes never pass through this MCP process; filename and content type are derived from the remote response. Do not base64-encode local files just to use this tool.

NameTypeReqDescription
bucketstringConvenience single bucket slug for this upload. Required unless bucketIds or bucketSlugs is provided.
bucketIdsarrayExisting knowledge bucket ids to assign this upload to. Required unless bucketSlugs or bucket is provided.
bucketSlugsarrayKnowledge bucket slugs to assign this upload to. Required unless bucketIds or bucket is provided.
contentBase64stringInline file bytes as base64. Use when filePath is not possible, such as hosted or remote MCP servers, browser-provided files, generated content, or remote sandbox attachment paths that the MCP proces…
createMissingBucketsbooleanIf true, create missing bucket slugs before assignment.
filePathstringPreferred for local MCP installs, including Claude Desktop and Cursor configs that run this package with a local command such as npx. Absolute or relative path readable by the machine running this MC…
filenamestringDisplay filename for the uploaded knowledge file. Required for filePath and contentBase64 sources; derived server-side for sourceUrl.
idempotencyKeystringOptional idempotency key for durable upload retries.
metadataobjectOptional metadata object serialized onto the upload request.
mimeTypestringContent type for the uploaded knowledge file. Required for filePath and contentBase64 sources; derived server-side for sourceUrl.
sourceUrlstringPublic http(s) URL of a file to import. The backend fetches it behind its SSRF policy (public hosts only, 25MB cap) and queues indexing. Typed errors: url_fetch_blocked, url_fetch_failed (retryable),…
tagsarrayOptional tags for knowledge-store organization.
titlestringOptional human-readable title stored with the knowledge file.
waitForIndexingbooleanIf true, wait until indexing reaches a terminal ready state before returning.

No output schema declared.

No examples provided.

calypso-upload-files-batch ~385

[CALYPSO UPLOAD FILES BATCH] Uploads 1 to 100 files into the durable knowledge store and indexing queue in one request. Use this for bulk corpus ingestion. Shared bucket fields apply to every item unless an item provides its own bucket fields. The tool returns batch-level status and, when requested, polls until the batch reaches active, partially_active, partially_failed, failed, or timeout. A shared bucket destination is required unless every item provides its own bucket destination. Choose exactly one file source per item. Use `filePath` when this MCP server runs locally and can read each path, including Claude Desktop or Cursor configs that launch this package with npx. Use `contentBase64` for hosted or remote MCP clients, browser uploads, generated in-memory content, or remote sandbox files that this MCP process cannot read. Do not base64-encode local files just to use this tool.

NameTypeReqDescription
batchIdempotencyKeystringIdempotency key used to derive the durable batch id. Auto-generated when omitted; pass your own stable key to make a retried call replay the same batch instead of creating a new one.
bucketstringConvenience single bucket slug applied to all items by default. Required unless every item has a bucket destination.
bucketIdsarrayExisting bucket ids applied to all items by default. Required unless every item has a bucket destination.
bucketSlugsarrayBucket slugs applied to all items by default. Required unless every item has a bucket destination.
createMissingBucketsbooleanIf true, create missing shared bucket slugs before assignment.
itemsarrayyesKnowledge files to upload in this batch.
waitForBatchReadybooleanIf true, poll batch status with include_items=true until terminal or timeout.

No output schema declared.

No examples provided.

Common questions

What is the Calypso Multimodal RAG MCP server?

Calypso Multimodal RAG MCP is listed in the public MCP registry as io.github.calypso-so/multimodal-rag-mcp-server. Calypso multimodal RAG for grounded answers from docs, images, charts, and knowledge. This page covers its npm package (@calypsohq/multimodal-rag-mcp-server).

Is the Calypso Multimodal RAG MCP server safe to use?

Calypso Multimodal RAG MCP scores 76 out of 100 on VerifyMCP. We recorded 12 known advisories against it as of 20 September 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

What tools does the Calypso Multimodal RAG MCP server expose?

Calypso Multimodal RAG MCP exposes 9 tools: calypso-search, calypso-list-buckets, calypso-get-file, calypso-create-bucket, calypso-create-agent, and 4 more. Their descriptions and schemas cost roughly 2,591 tokens of context every time the server is loaded.

Is the Calypso Multimodal RAG MCP server still maintained?

Calypso Multimodal RAG MCP is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

What licence is the Calypso Multimodal RAG MCP server under?

Calypso Multimodal RAG MCP declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.