AntFeed

Live at antfeed.org

An open-source, on-chain index of buyer activity on the AntSeed P2P AI services network. Provider/seller activity is already surfaced on antseed.com/network; this app fills the gap on the demand side: who is spending USDC on inference, with which providers, and how reliably.

Not affiliated with the AntSeed team.

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What it does

1. Funded buyers — per-depositor volume, sessions, unique sellers, ghost-session count, and a derived Buyer Trust Score (0–100).
2. Network leaderboard — sortable, filterable buyer ranking.
3. Network overview — daily settlement volume, active buyers, last 30 days.
4. Token usage detail — input/output tokens and request count from AntseedStats.MetadataRecorded, with legacy settled-session metadata decoded only after validation.
5. Public scoring API — GET /api/score/[address] returns the trust score JSON for any address.

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Stack

• Next.js 15 (App Router) + TypeScript
• viem for Base reads (no wallet, read-only)
• Neon Postgres + Drizzle ORM (HTTP driver, serverless-friendly)
• Tailwind CSS, Recharts

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Getting started locally

cp .env.example .env       # fill DATABASE_URL with a Neon DB or a local Postgres
npm install
npm run db:push            # apply schema to your DB
npm run dev

Script	What it does
npm run dev	Local Next.js dev server
npm run build	Production build
npm run db:generate	Diff schema and emit a new migration in drizzle/
npm run db:push	Apply schema directly (dev-only, no migration history)
npm run db:migrate	Apply pending migrations from drizzle/
npm run db:studio	Open Drizzle Studio for browsing the DB
npm run sync	Run a one-shot indexer pass against the configured DB
npm run sync loop	Loop until caught up to chain head

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Environment variables

var	default	meaning
DATABASE_URL	required	Postgres connection string.
RPC_URL	https://base.drpc.org	Base RPC. DRPC and Tenderly free tiers allow large eth_getLogs ranges.
CHAIN_ID	8453	8453 Base mainnet, 84532 Base Sepolia.
CRON_SECRET	none	Required in production. Cron requests must send Authorization: Bearer <CRON_SECRET>.
LOG_BATCH_SIZE	2000	Max blocks per getLogs. Indexer auto-shrinks if RPC complains.
CHANNELS_ADDRESS	0xBA66d3b4f...	Override only if you've forked to a different contract.
START_BLOCK	deployment block	First block to index from.

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Contract integration

Core settlement contract: AntseedChannels on Base mainnet, 0xBA66d3b4fbCf472F6F11D6F9F96aaCE96516F09d, deployed at block 45,667,842. Auxiliary indexers also read AntseedStats, ANTS, staking, deposits, and identity events for token accounting, holder state, DAU, and address enrichment.

event	semantic
Reserved	session opened (buyer locks maxAmount for a seller).
ChannelSettled	seller called settle; delta USDC moved this batch. metadata is seller-provided opaque bytes and is stored only after validation.
MetadataRecorded	authorized stats writer recorded per-inference input/output tokens and request count; canonical source for network token totals.
ChannelClosed	channel closed. settledAmount=0 + no prior ChannelSettled → ghost.
ChannelTopUp	buyer added more deposit to an existing channel.
ChannelWithdrawn	buyer pulled refund.
CloseRequested	grace-period close started.

Per-buyer aggregates are recomputed in SQL on every sync — no event replay needed for score recomputes. The indexer runs reconcileDrift() after each pass to catch rare partial-sync races.

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Buyer Trust Score

lib/score.ts, 0–100, four sub-scores:

• Volume (0–30) — log10(USDC + 1) / log10(100) × 30. $100 settled = 30.
• Consistency (0–25) — log10(sessions + 1) / log10(50) × 25.
• Diversity (0–25) — <3 unique sellers = 0; 3 = 10; 10+ = 25.
• Reliability (0–20) — settled / (settled + ghost) × 20.

A buyer with ≥3 distinct settled sellers earns the Qualified Proven Sign badge.

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Public APIs

GET  /api/stats                      Network aggregates + 30d daily series
GET  /api/buyers?limit=&offset=&qualified=&minScore=&sort=
GET  /api/buyers/{address}           Buyer detail + sessions + top sellers
GET  /api/score/{address}            Trust score JSON
POST /api/sync?force=1               Manual indexer pass (Bearer sync secret required)

/api/score/{address} example:

{
  "address": "0x…",
  "score": 73,
  "tier": "trusted",
  "qualified": true,
  "breakdown": {
    "total": 73,
    "volume": 24.1,
    "consistency": 18.0,
    "diversity": 18.6,
    "reliability": 12.0,
    "qualified": true
  },
  "stats": { "…": "raw indexed counters" }
}

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Operations

• Vercel cron is the scheduled indexer owner. vercel.json runs /api/cron/sync every five minutes; do not add an external minute-level cron for the same endpoint.
• /api/cron/hero is an authenticated manual repair endpoint only. Call it with ?repair=1 after confirming /api/cron/sync cannot refresh the hero snapshot.
• Runtime contract checks require an explicit target: API_RUNTIME_BASE_URL=http://localhost:3000 npm run test:api-runtime and CSP_RUNTIME_URL=http://localhost:3000 npm run test:csp-runtime.
• Verify shared public API rate-limit storage after migrations with npm run check:rate-limit-storage; otherwise the app falls back to per-instance limits until the table exists.

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Project layout

antseed-explorer/
  app/
    layout.tsx                  # nav + Sync button
    page.tsx                    # / overview + top 10
    buyers/page.tsx             # /buyers leaderboard
    buyers/[address]/page.tsx   # buyer detail
    api/
      cron/sync/route.ts        # cron-driven indexer pass
      sync/route.ts             # authenticated manual sync endpoint
      buyers/route.ts
      buyers/[address]/route.ts
      stats/route.ts
      score/[address]/route.ts
    components/                 # Charts, Badges, CopyButton, UI helpers
  lib/
    schema.ts                   # Drizzle Postgres schema
    db.ts                       # Neon HTTP client + state helpers
    queries.ts                  # all reads used by pages/APIs
    indexer.ts                  # getLogs loop, ghost detection, recompute, reconcile
    antseed.ts                  # contract addresses + ABI
    chain.ts                    # viem client
    score.ts                    # Buyer Trust Score
    format.ts
  scripts/
    sync-cli.ts                 # local CLI sync against DATABASE_URL
  drizzle/                      # generated migrations
  vercel.json                   # cron config + maxDuration

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Contributing

Issues and PRs are welcome. The most useful contributions right now:

• Improved scoring models or new score dimensions
• Additional on-chain event types or contract support
• UI improvements and new views (e.g. seller-side explorer)
• Better RPC resilience / retry logic in the indexer

Open an issue to discuss before submitting a large change.