Coil Board API

Coil publishes a scored, ranked read of the US equity market (and a long-only BTC/ETH trend book) that an agent can buy one read at a time over x402. You are not buying raw OHLCV — that is free everywhere. You are buying the judgment: which names are set up to buy, how strong the regime is, and how the board ranks today, read top-down.

Everything here is an impersonal research publication — identical for every buyer, scores and states only, never stop or target prices, never individualized advice. Markets can lose money.

When to use this skill

• You need a market-regime gate before doing something expensive: is it risk-on or risk-off right now? → call /api/board/regime ($0.005).
• You want today's ranked buy candidates without scanning 500 names yourself → call /api/board/buylist ($0.02).
• You want the whole board — every scored name across four books, sector lanes, both buy-list lanes — to do your own selection → call /api/board/agent ($0.25).

The endpoints (15 — full catalogue at GET https://coil.trade/api)

Endpoint	Price (USDC)	Returns
GET https://coil.trade/api/board/regime	0.005	Regime verdict per book (risk-on / be-selective / stand-down) + the index→sector→name permission ladder.
GET https://coil.trade/api/board/crypto	0.005	BTC/ETH long-only trend signal: LONG or CASH per sleeve, 50-day gates + the BTC 200-day master gate (UTC daily closes).
GET https://coil.trade/api/board/indices	0.005	The scored index row per book (SPY, QQQ, macro, BTC/ETH) — the cheapest top-down read.
GET https://coil.trade/api/board/name?sym=NVDA	0.005	One stock's full read + its book's regime. Any of ~560 names.
GET https://coil.trade/api/board/movers	0.005	Top 10 gainers + 10 losers, fully scored.
GET https://coil.trade/api/board/sectors	0.01	Every sector ETF scored + the regime's green sectors.
GET https://coil.trade/api/board/sector?name=Energy	0.01	One sector's members, fully scored and ranked (?etf=XLE works too).
GET https://coil.trade/api/board/leaders	0.01	Top 10 leadership names per book by opportunity.
GET https://coil.trade/api/board/buylist	0.02	Today's ranked candidates per book across two lanes, with entry windows and leadership flags.
GET https://coil.trade/api/board/top-volume	0.02	Top-5 by 20-day dollar volume in every sector, fully scored.
GET https://coil.trade/api/crypto/gate	0.001	The cheapest check: is the BTC 200-day master gate open? LONG/CASH per sleeve + verdict.
GET https://coil.trade/api/tradfi-risk	0.003	TradFi risk-on/off for crypto agents: S&P + Nasdaq regime, sector breadth, ladder + the BTC/ETH gate.
GET https://coil.trade/api/board/brief	0.02	The morning brief: regime per book + top-5 picks + biggest movers + crypto gate, in one call.
GET https://coil.trade/api/board/asof?date=YYYY-MM-DD	0.02	Point-in-time archived scores, verbatim from the append-only log — verifiable against the free /api/board/proof.
GET https://coil.trade/api/board/agent	0.25	The full board: ~560 scored names, all four books, sector boards, both buy-list lanes.

Free, before any payment: GET /api/perf (the engine's record vs SPY/QQQ) and GET /api/board/proof (append-only sha256 commitments with a reproducible verification recipe) — check the publisher before trusting it. POST /api/key with an email returns an instant free key (~25 live calls/day on the cheap slices, X-Coil-Key header).

No wallet? The same board is also a remote MCP server — free tier, full board one market day delayed: claude mcp add --transport http coil https://coil.trade/mcp

Pairing with a broker (closing the loop)

Coil publishes what to look at; it never places orders and never sees an account. If the agent also has execution — Robinhood's Trading MCP (agentic accounts, budgeted sub-account) or Alpaca's MCP/CLI (paper trading, no funded account required) — load both servers in the same client and follow this read order:

1. get_market_regime — if the ladder does not permit names, stand down. Do not place orders.
2. get_buy_list — consider only names that appear on it.
3. get_stock_read / get_sector_read — drill into candidates before committing.
4. Only then the broker's tools, sized by the operator's own rules.

get_morning_brief collapses steps 1–2 into one call. Coil emits no position sizes, no stop prices and no target prices — risk definition belongs to the operator, not the publisher. Full recipe: https://coil.trade/agents/robinhood

All live slices read from the same freshest payload (the as-of archive serves its requested date instead), so a cheap slice is never staler than the full board. During US market hours the board recomputes about every 5 minutes; the payload carries computed_at and an intraday flag, plus a freshness block telling you when it is worth paying again.

Try it free first

Before paying, validate your parser against the free preview — identical schema to the paid board, previous day, top-3 names per book:

GET https://coil.trade/api/board/agent?preview=1

There is also an always-free delayed sample at GET https://coil.trade/api/board/free.

How payment works (x402)

1. GET the endpoint with no payment. It returns HTTP 402 with a JSON body whose accepts[0] describes the requirement: amount (atomic USDC, 6 decimals — 5000 = $0.005), asset (USDC 0x8335…2913), network (eip155:8453, Base), and payTo.
2. Sign an EIP-3009 TransferWithAuthorization for that amount to payTo and resend the request with the PAYMENT-SIGNATURE header (base64 x402 v2 payload).
3. On success you get HTTP 200 with the JSON board and an on-chain receipt in the PAYMENT-RESPONSE header.

Any standard x402 client handles this loop for you — e.g. x402-fetch with an EVM signer, Coinbase AgentKit, or an x402 MCP bridge. The endpoints are indexed in the Coinbase CDP x402 Bazaar; discovery metadata is also at https://coil.trade/.well-known/x402 and the OpenAPI spec at https://coil.trade/openapi.json.

Reading the payload

Each scored name carries (field names as returned):

• opp_pct — opportunity, 0–100. The board's headline blend.
• entry_q — entry quality, 0–100. Buyable now vs extended. Timing, not advice.
• hold_q — hold strength, 0–100. Trend durability.
• state — firing / ready / setup / wait / chase / falling.
• sector, is_leader, and (in buy-list lanes) a window note like READY.

Each book carries a regime object: mode, a plain-language verdict, which sectors are green, and a ladder (index → sector → name) saying whether individual names are enterable at all. Read top-down: if the regime says stand down, the ranked names below it are context, not a green light.

Knowing when to come back

The board is a moving read, not a one-time file. Poll regime cheaply to decide whether to buy the fuller slices. The freshness.next_refresh_at field tells you the earliest a new payload is worth paying for; polling faster returns the same bytes. Outside US market hours you get the morning snapshot.

What this is not

Not investment advice, not a managed account, not a signal service promising returns, and not a guarantee of profit. Scores are derived from historical and technical data and do not predict future results. See https://coil.trade/terms.