{
  "name": "bucket-foundation",
  "version": "0.2.0",
  "spec": "feed402/0.2",
  "chain": "base-sepolia",
  "wallet": "0x0000000000000000000000000000000000000000",
  "_wallet_note": "placeholder — live wallet address drops in after Track B (x402-research-gateway) deploys to x402-research.agfarms.dev",
  "tiers": {
    "raw": {
      "path": "https://x402-research.agfarms.dev/raw",
      "price_usd": 0.05,
      "unit": "row"
    },
    "query": {
      "path": "https://x402-research.agfarms.dev/query",
      "price_usd": 0.01,
      "unit": "call"
    },
    "insight": {
      "path": "https://x402-research.agfarms.dev/insight",
      "price_usd": 0.002,
      "unit": "call"
    }
  },
  "proxy": {
    "url": "https://www.bucket.foundation/api/research",
    "note": "zero-key server-side proxy; budget-capped at $1.00/day shared; pass ?q= and optional ?tier="
  },
  "envelope": {
    "schema": "feed402/0.2",
    "example": {
      "data": { "_note": "tier-specific payload (list of papers, synthesis, or raw rows)" },
      "citation": {
        "type": "source",
        "source_id": "pmid:123456",
        "provider": "pubmed",
        "retrieved_at": "2026-04-23T00:00:00Z",
        "license": "CC-BY-4.0",
        "canonical_url": "https://pubmed.ncbi.nlm.nih.gov/123456/"
      },
      "receipt": {
        "tier": "insight",
        "price_usd": 0.002,
        "tx": "0xabc...",
        "paid_at": "2026-04-23T00:00:01Z",
        "buyer_wallet": "0xdef...",
        "status": "paid"
      },
      "cite": {
        "price_usd": 0.002,
        "payout_wallet": "0xa91115B1AB8412f380Fd62446F523559F668b96B",
        "license": "bucket.foundation/cite-forever/v0.1"
      },
      "tags": ["biophysics", "mitochondria"],
      "canon_tier": "candidate",
      "foundation_branches": ["05-biophysics"],
      "provenance": [
        { "action": "retrieved", "at": "2026-04-23T00:00:00Z", "by": "bucket-proxy", "via": "x402-research.agfarms.dev" },
        { "action": "cited", "at": "2026-04-23T00:00:01Z", "by": "agent:claude", "via": "feed402/0.2" }
      ]
    }
  },
  "schema_url": "https://www.bucket.foundation/llms-full.txt",
  "citation_policy": "CC-BY-4.0",
  "citation_types": ["source"],
  "license": {
    "name": "bucket.foundation cite-forever v0.1",
    "url": "https://www.bucket.foundation/cite-forever/v0.1",
    "spdx": null,
    "intent": "free-to-read, paid-to-cite"
  },
  "contact": "ops@bucket.foundation",
  "index": {
    "type": "hybrid",
    "model": "openai:text-embedding-3-small",
    "distance": "cosine",
    "chunks": null,
    "chunk_strategy": { "kind": "post" },
    "corpus_sha256": null,
    "built_at": null,
    "_note": "corpus spans eight canon branches (mathematics, physics, chemistry, information, biophysics, cosmology, mind, earth) plus the Kruse biophysics corpus (~460 posts). Chunk counts and hashes populate after x402-research-gateway first-index build."
  },
  "links": {
    "llms": "https://www.bucket.foundation/llms.txt",
    "llms_full": "https://www.bucket.foundation/llms-full.txt",
    "mcp": "https://www.bucket.foundation/.well-known/mcp.json",
    "ai_plugin": "https://www.bucket.foundation/.well-known/ai-plugin.json",
    "cite_license": "https://www.bucket.foundation/cite-forever/v0.1",
    "envelope_docs": "https://www.bucket.foundation/protocol/envelope",
    "source": "https://github.com/bucket-foundation/bucket-foundation",
    "spec": "https://github.com/gianyrox/feed402"
  }
}