Similarity Search API SDK

Stateless NMI + cosine fusion with entropy-driven alpha calibration

Connector by nexus-mcp-infra · GitHub account verified by the MCP Registry

IndexedLicense unknownRemote (HTTP)

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Install

Works with Claude Code, VS Code, Cursor, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install connector/nexus-mcp-infra-similarity-search-api-sdk

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Remote endpoint

https://similarity-search-api-production.up.railway.app/mcp Remote (HTTP)

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About

Stateless NMI + cosine fusion with entropy-driven alpha calibration

Reviews

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools: 3 read · 0 write · 0 deleteRead-only
Secrets: None asked for
Install scripts: Nothing to install (hosted)
Runs as: Hosted (remote endpoint)

Tools by what they do 3

From the running server's own tool list (tools/list) on Oct 25, 2026.

Read 3 · Look things up without changing anything.

nexus_similarity_search_api_estimate_corpus_entropy_profile
nexus_similarity_search_api_rank_items_by_nmi_cosine_fusion
nexus_similarity_search_api_score_pair_nmi_cosine

Network hosts it talks to 1

similarity-search-api-production.up.railway.app · found in remote endpoint, install command

Tools (3)

As the server listed them on Oct 25, 2026. Descriptions are the server’s own words; hidden characters are shown as [U+…].

nexus_similarity_search_api_estimate_corpus_entropy_profile
Computes the aggregate entropy-calibrated alpha for a corpus without running a full search -- useful to inspect before committing to a large rank_items_by_nmi_cosine_fusion call. Returns a single aggregate corpus_entropy value, NOT a per-dimension breakdown -- the real logic only exposes the mean marginal entropy across dimensions, not H(X_d) per individual dimension. Do NOT use expecting per-dimension granularity. Requires an x402 payment.
nexus_similarity_search_api_rank_items_by_nmi_cosine_fusion
Ranks a corpus of items against a query vector using a calibrated fusion score (alpha * cosine + (1-alpha) * NMI_normalizado), where alpha is auto-derived from the corpus's marginal entropy unless overridden. Results are identified by their 0-indexed position in corpus_vectors (this tool does not accept explicit item IDs). Use this when you need semantically-calibrated similarity over a stateless corpus of up to 500k items without a vector database. Do NOT use for purely geometric nearest-neighbor search where NMI overhead is unnecessary, nor for corpora larger than 500k items per call. Requir…
nexus_similarity_search_api_score_pair_nmi_cosine
Computes the NMI-cosine fusion score for exactly one (query, target) vector pair at a fixed alpha. Use for explainability, debugging, or unit-level validation of fusion scores before running full corpus ranking. Unlike corpus-level ranking, alpha is NOT auto-calibrated for a single pair -- the real logic requires a fixed alpha (default 0.5); pass alpha explicitly for a specific blend. Do NOT use in a loop to score many pairs; batch them into rank_items_by_nmi_cosine_fusion instead. Requires an x402 payment.

Signals

Stars: 0
Forks: 0
Open issues: 0
Last commit: Sep 1, 2026 (2 months ago)
Last release: Jul 17, 2026 (3 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name: io.github.nexus-mcp-infra/similarity-search-api-sdk
Version: 1.0.0
Auth: Auth not stated
License: License unknown
Repository: github.com/nexus-mcp-infra/similarity-search-api-sdk
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: Official MCP Registry github-graphql

Rank

of 44,833 in Connectors

Score

0.536

Security 30%not yet
Popularity 25%0.29
Freshness 20%0.80
Rating 15%not yet
Docs 10%0.78

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Active in the last 90 days. Last activity 2 months ago.

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Availability

100% uptime, last 30 days (1 check)

Last check: 6 days ago
Status: Up
Median response: 828 ms

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Cite this page

Similarity Search API SDK MCP server. Agent Mart. https://agentmart.dev/connectors/nexus-mcp-infra-similarity-search-api-sdk (last updated 2026-10-24)