MCP server

Similarity Search Api Sdk

io.github.nexus-mcp-infra/similarity-search-api-sdk

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Stateless NMI + cosine fusion with entropy-driven alpha calibration

Working at last checkAbout 1,400 tokens per request once connected3 tools

Source

https://similarity-search-api-production.up.railway.app/mcp

At a glance

Type: MCP server
Publisher: Not verified
Status: Working at last check
Tools: 3
Token cost: About 1,400 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to Cursor Add to VS Code VS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http similarity-search-api-sdk https://similarity-search-api-production.up.railway.app/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.similarity-search-api-sdk]
url = "https://similarity-search-api-production.up.railway.app/mcp"

Gemini CLI

{"mcpServers":{"similarity-search-api-sdk":{"httpUrl":"https://similarity-search-api-production.up.railway.app/mcp"}}}

Cursor

{"mcpServers":{"similarity-search-api-sdk":{"url":"https://similarity-search-api-production.up.railway.app/mcp"}}}

VS Code

{"servers":{"similarity-search-api-sdk":{"type":"http","url":"https://similarity-search-api-production.up.railway.app/mcp"}}}

Antigravity

agy mcp add similarity-search-api-sdk https://similarity-search-api-production.up.railway.app/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"similarity-search-api-sdk","server_url":"https://similarity-search-api-production.up.railway.app/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"similarity-search-api-sdk","server_url":"https://similarity-search-api-production.up.railway.app/mcp"}

Tools

nexus_similarity_search_api_estimate_corpus_entropy_profile ~358 tokens
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 ma
nexus_similarity_search_api_rank_items_by_nmi_cosine_fusion ~606 tokens
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 ac
nexus_similarity_search_api_score_pair_nmi_cosine ~436 tokens
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

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