Every agent-payable API.

blackhull token check: measured facts about one Base token, live from the chain

blackhull agent-economy pack, 2026-10-30

blackhull findings report on one x402 service, 2026-10-30

blackhull flags for one x402 service, 2026-10-30

blackhull top-earning agent services, 2026-10-30

blackhull route: best-rated ai-analysis providers, 2026-10-30

blackhull token check, 3 tokens: measured facts live from the chain. Measured by Blackhull from public data; every finding carries its evidence and can be disputed free at /dispute. Try it free: add ?sample=1.

Batch screen up to 50 blockchain addresses in one call for a flat $0.40 USDC (equal to $0.008 per address when you send 50). For fewer than 40 addresses, single /screen calls at $0.01 each cost less. Each result has the same action, sanctions (official OFAC SDN list only) and risk fields as /screen. Results are keyed by address; coOccurringAddresses is empty and reports are limited to 5 per address.

Retrieve one public C3 community fraud report by its report ID.

List top C3 contributor accounts ranked by reports, points, cases, and badges. All anonymous submissions share one account.

Validate one ISBN checksum and return its Open Library edition, work and author records projected into one sourced CSL-JSON book item; invalid or absent ISBNs return an explicit refusal. The FOUR truth reading is true when found and neither on refusal.

Market Chatter ($0.03/call): A Polymarket market's odds next to what X (Twitter) is saying about it, in one call: implied probability, 24h move, volume and days to resolution, beside the latest X posts about the question (retweets excluded) with post and author counts, the time window and the five most engaged posts. TypeSafe's Jev model reads the posts and gives the probability the chatter expects yes, and the divergence from the market's price. Pass a slug (or omit it for the busiest

X Pulse ($0.05/call): Is X bullish or bearish on a ticker or topic right now? Reads the latest 40 X (Twitter) posts about it (retweets excluded) and has TypeSafe's Jev model score them into a calibrated probability that the chatter is bullish, plus a bullish/neutral/bearish stance with a probability for each, the time window and author count it covers, and the five most engaged posts to cite. One call, no X account or API key. Sentiment data, not investment advice.

X User Search ($0.01/call): Find X (Twitter) accounts by keyword: up to 20 matching accounts per call with full profiles (bio, follower counts, account age, verification) as clean JSON, plus a cursor for more. No X account or API key needed.

X Mentions ($0.01/call): Who is talking about an X (Twitter) account: the 20 latest posts that mention the handle, newest first, as clean JSON with metrics and entities, plus the accounts mentioning it most on the page and a cursor for older mentions. Optional sinceTime (unix seconds) to poll only what is new. No X account or API key needed.

X Thread Unroll ($0.01/call): Unroll an X (Twitter) thread from any post id in it: the conversation author's posts oldest first with their text joined for reading, then the replies around it, each with metrics and its reply-to id. Pass the cursor for more replies. No X account or API key needed.

X Trends ($0.005/call): Top 30 trending topics on X (Twitter) right now for a location by Yahoo WOEID: 1 worldwide, 23424977 United States, 23424975 United Kingdom, 23424856 Japan, 23424748 Australia, 2459115 New York, 44418 London. Each with rank and the search query to pull its posts. The location actually served is echoed back. No X account or API key needed.

Jev Decision ($0.005/call): Ask Jev (TypeSafe System One) typed questions about one state and get numbers back, not text: noul answers the probability a yes/no is yes; choice picks an option with a probability for every option; score places the state on an ordered scale of levels with a probability for every level. Same body and answer as TypeSafe's POST /v1/systemone (model optional, state as text or JSON, questions keyed by your ids), so their docs and SDK question helpers apply; pay

X User Timeline ($0.01/call): Latest posts by an X (Twitter) account: up to 20 per call, newest first, as clean JSON with metrics, hashtags, links and mentions, plus a cursor for older posts. Replies excluded unless includeReplies=true. No X account or API key needed.

X KOL Watchlist Monitor ($0.02/call): Watch up to 15 X (Twitter) accounts with one call: every new post from the list since your last poll, above your engagement floor, with retweets and crypto-spam (airdrop/giveaway/presale bait) filtered out and duplicates removed. Pass the returned newestId back as sinceId to get only what is new - replaces the search + filter + dedupe + paging loop KOL-monitoring agents build by hand. No X account or API key needed.

X Follower Sample ($0.01/call): Sample an X (Twitter) account's audience: its 40 newest followers with full profiles (bio, follower counts, account age, verification), how many of them are verified (checked against the account's verified-follower list, not X's dead legacy flag) and that share, plus the account's total follower count. No X account or API key needed.

Bridge exploit track record: for one bridge, its hack history (incidents, total USD lost, funds returned, worst technique); with no bridge, a ranked leaderboard of every bridge hack by USD lost. Sourced from DefiLlama's hack dataset, joined and normalized by us.

Report on one bskts index basket of tokenized stocks and crypto on Robinhood Chain: live NAV, holdings and weights, fees, risk, and 7, 30 and 90-day return, drawdown and volatility.

US stock and ETF prices while the market is closed (nights, weekends, holidays): each tokenized stock's on-chain pool price on Robinhood Chain now against its price at the last US close, with trades and volume since, plus every bskts basket's move.

Bitcoin block metadata by height or hash (or the chain tip when neither is given), fused with the current difficulty-adjustment context, a computed halving countdown and a network hashrate snapshot. Informational, not advice.

Recommended Bitcoin transaction fee-rates in sat per vByte across five confirmation horizons (fastest, half hour, hour, economy, minimum) plus a live mempool congestion snapshot with an estimated block backlog. Informational, not advice.

Live Bitcoin mempool snapshot: unconfirmed transaction count, total virtual size and total fees, a fee-rate histogram broken into buckets, and an estimated block backlog. Informational, not advice.

Decoded Bitcoin transaction by txid: inputs and outputs, fee, size, weight and virtual size, replace-by-fee flag, and confirmation status with a confirmation count. Informational, not advice.

catalogue size and 30-day totals: services, calls, unique paying wallets, with the snapshot hash

Translate a short-drama episode, retaining subtitle cue identity and timing. A private series key carries approved terminology into later episodes and unambiguous renderings into the reverse direction. Output is a draft with mechanical checks and requires review before production approval.

Cheap raw normalized reserve breakdown of one centralized exchange: total on-chain reserves (currentTvl), clean-of-own-token reserves (cleanAssetsTvl), the own-token symbol / USD value / concentration, clean-asset ratio, spot & derivative volumes, leverage, 24h/1w/1m netflow and the public reserves URL, with citations. The cheap first grain before the fuller /cex/solvency verdict. Keyless DefiLlama source; reserves are a proxy, not proof of solvency.

Market-wide ranked solvency screen of all centralized exchanges from DefiLlama CEX Transparency: each row has solvency_score, rating, clean-asset ratio, own-token concentration, 1-week netflow percent and risk flags. Filter by min_score / max_own_token_pct / min_tvl; sort by score, tvl or outflow. Deterministic; reserves are a proxy, not proof of solvency.

chain breakdown: providers, 30-day calls, unique paying wallets and median price per network — where the paying demand actually is

Prepare a TWAP cancellation for L1 signing. Supply action type twapCancel, asset ID a, and TWAP ID t. Sign and submit unchanged using the returned submitPath. Treat spot and perp as one balance only when the account abstraction mode is "unifiedAccount".

Prepare a TWAP order for L1 signing. Supply asset, side, total size, reduce-only, duration of 5 to 10,080 minutes, and randomize. Estimated total value at the current mid must be at least $100 for perps or 100 of the pair's quote token for spot. Builder-deployed perps are not supported. Sign and submit using the returned submitPath. Treat spot and perp as one balance only when the account abstraction mode is "unifiedAccount".

Prepare a batch moving native USDC held by the deposit wallet to the bridge (credited as pUSD). Only for USDC already in the deposit wallet: the normal path is sending USDC to the bridge deposit addresses from GET /predict/polymarket/wallet/{signer}, which needs no batch. The chainhilt wallet signs `response.actions[0]`, a Batch, and POSTs it to /predict/polymarket/wallet/batch/submit. Errors: 400 invalid input, 422 balance or bridge minimum (not charged), 429 daily relayer cap.

Resolve an order asset ID from asset (symbol, spot pair, @index, or numeric market index) and sourceDex ("" for default perps, "spot" for spot). Spot IDs are 10000 + spot market index; already formatted IDs are preserved. Token indexes are not market indexes. Unknown or ambiguous assets return 400; provider failures return 502. Use assetId as orders[].a or modify order.a before signing. Treat spot and perp as one balance only when the account abstraction mode is "unifiedAccount".

Add or remove isolated margin for a perp asset. ntli is a signed integer in millionths of USD: 1000000 adds 1 USD; -1000000 removes 1 USD. isBuy defaults to true. Sign and submit unchanged to isolated-margin/execute (unpaid). Errors: 400 invalid input, 422 rejection, 502 provider failure. Treat spot and perp as one balance only when the account abstraction mode is "unifiedAccount".

Compare bridge routes, best first: tokens, estimated and minimum target amounts, fees by token, duration, expiry and the approval each route needs. sourceAmount is exactly what leaves the wallet.

Preview the Hyperliquid cancel-all action the user must sign, optionally scoped to a market. Treat spot and perp as one balance only when the account abstraction mode is "unifiedAccount".

Prepare a user-signed sendAsset transfer between users, subaccounts, spot and perp DEXs. Use "" for the default perp DEX and "spot" for spot; perp transfers require the collateral token. Sign with the main wallet and submit unchanged to send-asset/execute (unpaid). Invalid input returns 400; execution may return 422 for rejection or 502 for provider failure. Treat spot and perp as one balance only when the account abstraction mode is "unifiedAccount".

Set cross or isolated leverage for a perp asset. Supply isCross and positive integer leverage; market limits apply. Sign the L1 preview and submit unchanged to leverage/execute (unpaid). Errors: 400 invalid input, 422 exchange rejection, 502 provider failure. Treat spot and perp as one balance only when the account abstraction mode is "unifiedAccount".

Held outcome-token positions with PnL and redeemability. Live positions from the venue's public data feed: size, average/current price, cash and realized PnL, and whether each position is redeemable (market resolved). Redemption itself is an on-chain action from the holding wallet; resolved positions redeem to pUSD. `truncated: true` means the upstream page cap was hit and more positions exist.

Look up a bridge after its transaction was sent, by the adapter that built it and the hash of the bridge transaction on the source chain; layerzero and relay also need the providerRef that bridge/execute returned (0x and 64 hex characters). Poll it every 10 to 15 seconds until the status is filled, refunded or failed; an error answer, such as a 429, is not charged. After a 429, wait the Retry-After seconds.

Prepare a pUSD withdrawal batch to the bridge routing address. `recipientAddr` defaults to the signer and is echoed in `plan.plan.details.recipient`; check it before signing. 422 when the asset is not on the bridge's list or the amount is under its minimum (2 pUSD for USDC on Base), since the bridge never delivers smaller transfers. On submit, `final` means the pUSD reached the bridge; delivery to the destination chain takes minutes.

Deterministic prediction-market quote from the live order book: integer micro-unit book walk (buys round principal up, sells round proceeds down). `estimatedVenueFee` is Polymarket's own taker fee at the average price (shares × rate × p × (1 − p), from the market's live fee schedule; null when the venue reports a fee type this API cannot price). Informational only — nothing is reserved.

Preview a Hyperliquid trade with notional, margin impact, slippage, liquidation estimate, exchange fees, and builder fee. Treat spot and perp as one balance only when the account abstraction mode is "unifiedAccount".

Order books for every outcome of a market.

Trade and settlement history of a venue account, newest first and cursor-paged: fills (TRADE, with the pUSD that actually moved, fees included), REDEEM, SPLIT/MERGE, CONVERSION and rewards, each with its Polygon transaction hash. Deposits and withdrawals appear only when `type` names them. Filter by `type`, `conditionId`, `side` and an ISO `start`/`end`; to page, pass `nextCursor` as `cursor` with the same filters. The ground truth after an ambiguous submit.

Prepare a single-order modification by OID or CLOID for L1 signing. Supply the full replacement order. Omit action.a unless true. Sign and submit unchanged using the returned submitPath. See /skills.md for signing rules. Treat spot and perp as one balance only when the account abstraction mode is "unifiedAccount".