generated: '2026-07-21'
method: searched
status: published
source: https://github.com/synthetic-sciences/delphi
license: Apache-2.0
server:
  name: synsci-delphi
  product: Delphi
  summary: Open-source, self-hosted MCP server that gives AI agents deep context through semantic search
    across code repositories, research papers, and HuggingFace datasets. Runs fully local (PostgreSQL
    + pgvector); local sentence-transformers embeddings by default with optional Gemini / OpenAI hosted
    embeddings.
  transport: stdio
  bridge:
    command: uvx
    args:
    - synsci-delphi-proxy
    env:
      SYNSC_API_KEY: your-api-key
      SYNSC_API_URL: http://localhost:8742
  http_api: http://localhost:8742
  dashboard: http://localhost:3000
  install: npx @synsci/delphi
  clients:
  - Claude Code
  - Cursor
  - Windsurf
  - Claude Desktop
  mcp_server_name: synsc-context
  profiles:
    default: code + papers + datasets tools
    atlas: adds Atlas research-graph ingestion/retrieval tools (SYNSC_MCP_PROFILE=atlas)
    all: all tool groups
tools:
- name: index_repository
  group: code
  description: Index a GitHub repository (quality_mode
  include_tests/docs/examples: null
  deep_index: null
  force_reindex).: null
- name: index_local_folder
  group: code
  description: Index a local directory straight from disk (private/WIP code).
- name: quick_index
  group: code
  description: Resolve a library name via the curated catalog and index it in one step.
- name: catalog_search
  group: code
  description: Resolve a library/framework name to an indexable source (works cold
  zero indexed sources).: null
- name: search_code
  group: code
  description: Hybrid code search (vector + BM25 + symbol + path + trigram
  fused).: null
- name: search_symbols
  group: code
  description: Find functions/classes/methods by name; structural extraction for 16 languages.
- name: get_symbol
  group: code
  description: Full symbol details plus reconstructed source body.
- name: find_callers
  group: code
  description: Who calls this symbol (code-dependency graph).
- name: find_callees
  group: code
  description: What this symbol calls — internal + external names.
- name: impact_analysis
  group: code
  description: Blast radius — transitive callers.
- name: build_code_graph
  group: code
  description: (Re)build the call graph for a repo.
- name: check_freshness
  group: code
  description: Is this index stale vs remote HEAD / file re-hash.
- name: list_stale_sources
  group: code
  description: List indexed repos whose index has drifted.
- name: get_file
  group: code
  description: Retrieve file content from an indexed repo.
- name: get_context
  group: code
  description: Fetch a chunk plus adjacent chunks and enclosing body/siblings.
- name: build_context_pack
  group: code
  description: Agent-ready context pack with token budgeter and re-query planner.
- name: get_directory_structure
  group: code
  description: Browse repository file tree.
- name: analyze_repository
  group: code
  description: Deep code analysis and architecture overview.
- name: classify_failure
  group: code
  description: Tag a Delphi failure with a stable failure-mode code.
- name: index_paper
  group: papers
  description: Index from arXiv URL/ID or PDF upload.
- name: search_papers
  group: papers
  description: Hybrid paper search
  section- and citation-aware: null
  cross-encoder rerank.: null
- name: extract_quoted_evidence
  group: papers
  description: Pull literal sentences from a paper that ground a claim.
- name: joint_retrieval
  group: papers
  description: One call to paper + code + Atlas-graph hits
  fused.: null
- name: get_citations
  group: papers
  description: Extract citation graph.
- name: get_equations
  group: papers
  description: Extract equations with context.
- name: generate_report
  group: papers
  description: Generate a markdown summary report.
- name: compare_papers
  group: papers
  description: Side-by-side paper comparison.
- name: index_dataset
  group: datasets
  description: Index a HuggingFace dataset card.
- name: search_datasets
  group: datasets
  description: Semantic dataset search with cross-encoder rerank.
notes: Delphi is a genuine published, open-source MCP server (searched, not derived). Atlas itself is
  direct REST + CLI and deliberately ships NO hosted MCP server — its docs state the retired MCP-era auth/pairing
  endpoints now return HTTP 426 Upgrade Required.
deployment:
  mode: none
  endpoint: http://localhost:8742
  verified: probed
  probe: dead
  note: the endpoint this manifest claimed did not answer; recorded as none rather than deleted so the
    claim stays auditable
  checked: '2026-08-12'
  source: catalog MCP census