{
  "ok": true,
  "surface": "/brain",
  "engine": "JYOTINT public brain — neural associative memory (frozen deep encoder → Hopfield pattern completion → spreading activation over typed synapses → k-winners-take-all lateral inhibition)",
  "non_generative": true,
  "note": "retrieval-only; no generative model; verbatim sealed/published text — every result is the operator's own published words or the verbatim sealed claim, with public provenance (source URL, SHA-256 seal hash, frozen grade) and an explainable activation path.",
  "usage": {
    "get": "/brain?q=upper%20stage%20anomaly%20calls&k=6&sensitivity=balanced",
    "post": "{\"q\": \"what did the record say before the Crocus attack\", \"k\": 6, \"sensitivity\": \"high_recall\"}",
    "post_vector": "{\"vector\": [<384 floats — bge-small-en-v1.5, query instruction applied client-side>], \"k\": 6}"
  },
  "sensitivity": {
    "param": "sensitivity",
    "modes": [
      "high_recall",
      "balanced",
      "high_precision"
    ],
    "default": "balanced",
    "profiles": {
      "high_recall": {
        "seedK": 20,
        "hops": 3,
        "theta": 0.01,
        "budget": 10,
        "cosFloor": 0,
        "admit": "all"
      },
      "balanced": {
        "seedK": 12,
        "hops": 2,
        "theta": 0.02,
        "budget": 6,
        "cosFloor": 0,
        "admit": "all"
      },
      "high_precision": {
        "seedK": 8,
        "hops": 1,
        "theta": 0.05,
        "budget": 6,
        "cosFloor": 0.55,
        "admit": "floor"
      }
    },
    "meaning": {
      "high_recall": "a planner inside a live window — miss nothing, accept noise (widest seeds, deepest spread, lowest prune floor, k default 10)",
      "balanced": "the engine's shipped defaults",
      "high_precision": "an office quoting the record outward — only hits whose own similarity to the query clears the cosine floor; hits reached by association alone are reported under `sensitivity.withheld`, never returned as results"
    },
    "every_result_carries": "lane: direct | associative"
  },
  "embedding": {
    "model": "@cf/baai/bge-small-en-v1.5",
    "backends": [
      "workers-ai binding (env.AI)",
      "workers-ai REST (env.CF_ACCOUNT_ID + env.CF_WORKERS_AI_TOKEN)",
      "client-supplied vector"
    ]
  },
  "freshness": "regen-on-seal: new advisories become new neurons at publish time; the public graph is read-only spreading activation (no runtime learning).",
  "inspect": {
    "graph": "https://jyotint.pages.dev/api/v1/brain-graph.json",
    "manifest": "https://jyotint.pages.dev/api/v1/brain-manifest.json"
  },
  "corpus": {
    "nodes": 4783,
    "seals": 123,
    "passages": 4660,
    "edges": 53803,
    "csr_edge_records": 54082,
    "edges_by_type": {
      "semantic": 53280,
      "citation": 279,
      "temporal": 244
    }
  },
  "mcp_tool": "neural_search (POST /mcp · tools/call)"
}