Every agent-payable API.

Call this before your agent pays an unfamiliar x402 payTo address or endpoint. Checks public sanctions lists (OFAC SDN crypto addresses), the ScamSniffer scam list, on-chain wallet age, activity and program status on Solana or Base, and optionally the endpoint's unpaid 402 challenge (payTo mismatch, price outliers). Returns verdict ok, caution, do_not_pay or unknown, a 0-100 score, flags with evidence, and missing_fields. Unknown is never reported as safe.

Use this when you need priced holdings and windowed PnL for one Solana wallet. Holdings valued in USD, a short plain-language summary, windowed realized and unrealized PnL, win rate, and evidence-backed labels such as active memecoin trader. Includes copyTradeScore and copyTradeGrade: copy-return after a 3s delay and a 3.6% round trip, win rate, sample-size shrinkage, and bot or insider penalties. The score is null when no close lasted at least 3 seconds.

Use this when you need the Solana tokens traders are watching right now. Trending Solana tokens with liquidity, 24h volume, pair age, and a short summary. Each token includes holder concentration (top-10 share), mint and freeze authority, LP lock or burn status, and sniper or bundle share of early supply. Each token has riskScore (0 clean to 100) and riskLevel (low, medium, high).

Everything in xstock_status plus every listed issuer mint for the same underlying ticker, each issuer objection with venue, notice date and source, live token metadata, data snapshot dates and known gaps. Descriptive data only, not advice.

Spam detection: classify text as spam or not spam with a confidence score. Powered by Jev, with an automatic Groq-hosted LLM fallback if Jev is slow or unavailable - under 4.5s guaranteed. Try GET /spam-check/sample.

Upcoming fixtures and the game schedule for a major sports league, normalized to one cited JSON. Give a league such as mlb, nhl, nfl, nba or epl and an optional date, and get each scheduled game with both teams, start time and venue. A cheap way for an agent to plan around the sports calendar.

Live and recent game scores for a major sports league, normalized to one cited JSON. Give a league such as mlb, nhl, nfl, nba or epl and get each game with both teams, the score, the game state, the period or inning and the start time. Sourced from official league APIs and ESPN, each record tagged with its source.

League table and standings for a major sports league, normalized to one cited JSON. Give a league such as mlb, nhl, nfl, nba or epl and get each team with wins, losses, win percentage or points, games behind, streak and its division or conference group. Sourced from official league APIs and ESPN.

Safety and performance preflight for a database query BEFORE you run it. Send the query for Postgres, MySQL or SQLite and get a pass, caution or block verdict with per-finding operation, severity, plain-language reason and a fix. Query-safety indicators, not a guarantee.

Catalog of covered stablecoins ranked by market cap, from the DefiLlama stablecoins feed. Each row carries symbol, name, DefiLlama id, peg type, collateral mechanism, total circulating supply, current price and the chains it lives on. Optionally filter by collateral mechanism or by chain. The cheap first step that resolves a symbol to the id the other routes use.

Peg facet for a stablecoin: current price, the absolute deviation from the one-dollar peg, a coarse depeg status of stable, watch or depegged, and the collateral mechanism with a note. The cheap grain for monitoring whether a dollar token is holding its peg. Cited to the open-data source.

Supply facet for a stablecoin: total circulating supply plus the per-chain breakdown from DefiLlama, cross-checked against an INDEPENDENT on-chain ERC-20 totalSupply read of the curated contract, with a divergence flag when the two disagree beyond a tolerance. Cited to both the open-data source and public on-chain state.

Pre-Trade Guard — before you pay an x402 listing, screen the payTo you are about to pay: its Verdict Index catalog history (first seen, payTo rotations, listings added or removed across the snapshots held), an OFAC SDN exact-match check, and the wallet's Base age and activity, combined into PROCEED, CAUTION, or ABORT with itemized reasons. Use this when an agent is about to pay a payTo it has never paid before.

Change detection for anything with a URL, built for monitoring loops: probe one x402 resource or web page WITHOUT paying it and answer BASELINE, UNCHANGED, or CHANGED with a field-by-field diff (price, asset, payTo, schema, page body) against the last check for that watch. Use this when an agent runs on a schedule and needs to know what changed before spending money or attention. Watch state is per-deployment; a redeploy re-baselines.

Snapshot one Base wallet in a single call: ETH balance, top token holdings, first and last activity, and outgoing transaction count. Use this when an agent needs a wallet's shape before deciding to pay, trust, or transact with it. Explorer fields that cannot be supplied come back marked unknown, never invented.

Audit one Base wallet's ERC-20 approvals against a curated list of major spenders (Permit2, Uniswap, Aerodrome, aggregators): active approvals are listed and unlimited ones flagged high risk. Use this when an agent or its owner wants to know what a wallet has already authorized before it holds or moves funds. When the explorer cannot supply the held-token list, the token-dependent fields come back marked unknown rather than the call failing.

Vital signs for one GitHub repository in a single call: stars, forks, open issues, license, last push, archived flag, and a 0-100 health score with a verdict line. Use this when an agent is choosing a dependency, a repo to contribute to, or a project to trust, and needs the quick read before the deep one.

Grade My Stall — a seller-side report card for one x402 resource: a live unpaid probe (does it answer 402 with a parseable challenge?), the description measured against the 500-character limit, CDP listing presence in the newest catalog snapshot, Settled's record, the origin's x402scan ownership declaration, and payTo consistency across sources. Checks that cannot be performed report unverified, never a guess. Use this when you run a stall and want to know how buyers' tools see it.

Bad-payTo Registry Feed — the currently flagged payTos, each with its evidence: every address in the bundled OFAC SDN snapshot, payTos the newest catalog snapshot pair shows rotated away from live listings, and payTos of listings that vanished between snapshots. Built from the same two sources the Pre-Trade Guard screens against. No entry without evidence; entry and evidence caps are stated, never silent. Use this when a router or guard wants the fleet's current avoid-list in one cheap call.

Agent-Card Verifier — an ERC-8004 agent id (resolved on Base via the registry) or an agent.json URL in; the card is fetched and checked against live reality: declared endpoints probed unpaid (402 is correct for a paid service), challenge payTos compared with the card's declared wallets, declared prices with live challenge amounts. Undeclared fields report not_checked, never a guess; an unreachable card errors honestly, unsettled. Use this when an agent's card claims more than its endpoints do.

Pricing comps for an x402 listing, read live from the CDP Bazaar public catalog: how many resources match your keywords, their price distribution, the closest comparables, and a recommended listing price with its rationale. Use this when you operate an x402 route and are setting or changing its price.

Generate or grade an agent card (the /.well-known/agent-card.json an agent publishes for A2A and AgentWorld-style registries). Generate builds a structurally valid card from your fields; grade scores a supplied card and itemizes its defects. Use this when you are registering an agent and want the card right the first time.

Ledger Dataset (full) — every route in the fleet's x402 observation ledger with its current state: observed and listed terms, latest status, check/change/recovery counts, derived defect class, catalogue listing and usage counters, plus the per-origin rollup and full provenance. Built from the Recheck history and the CDP snapshots this service holds; observation data only. Use this when you need route-level state for monitoring, grading, or dataset work.

A digest of currently open agent jobs from the marketplaces we sweep daily, filtered by the capabilities you name and sorted by budget: platform, budget, capability tags, deadline, and source snapshot time on every row, with a stale flag when the snapshot ages past 24 hours. Use this when your agent is looking for paid work.

Recheck watch pack: one $1.00 payment buys 250 change-checks for ONE endpoint ($0.004 per check instead of $0.005), good for 90 days. Pack credits persist across redeploys on the service volume. Returns an unguessable pack id — spend credits via POST /v1/recheck (body pack_id or X-Recheck-Pack header), and read the balance free at POST /v1/recheck/pack-balance. Use this when a monitoring loop checks the same endpoint on a schedule and wants one payment instead of hundreds.

Verdict Index — the CDP Bazaar catalog changelog: the diff between our two newest full-catalog snapshots (price, asset, network, payTo, description, service name), with added and removed resources counted. Snapshots refresh about every 6 hours; until two exist this returns 502 and charges nothing. Filter by resource, payTo, service name, or network — every chain covered, Solana included; the summary breaks counts down by network. Use this when a router needs what changed since its last sync.

Fleet Check — one health sweep of your whole x402 fleet: name resource URLs and/or origins (expanded from their own /.well-known/x402) and get a per-route table — alive, status, whether the 402 challenge decodes, each accept's network/asset/payTo/amount, an OK / DEGRADED / DOWN verdict naming the defect, and a grade per origin. Probes are unpaid only — this route never pays any route it checks. Use this when you run more than one x402 stall and want one honest answer about all of them.

Toolkit Pack — the prepaid form of the inspector toolkit: one $1.00 payment buys 125 checks spendable on Sign Reader, Score Book, or Guard in any mix ($0.008/check instead of the $0.01 singles), good for 90 days. Spend credits via POST /v1/sign-read, /v1/score-book, or /v1/guard (body pack_id or X-Toolkit-Pack header); read the balance free at POST /v1/toolkit/pack-balance. An exhausted pack returns 402 rather than charging per call. Use this when your agent runs the toolkit regularly.

Inspector Physical — the full pre-pay workup for one x402 resource in ONE $0.05 call (the singles sum to $0.075): Sign Reader's challenge report, Score Book's track record, Guard's PROCEED/CAUTION/ABORT verdict as the headline, and a Recheck that probes and records the target (BASELINE/UNCHANGED/CHANGED, in the public feed). No RouteVerdict leg. Bad targets are delivered reports; only SSRF refusals are 422. Use this when your agent wants one endpoint's complete picture before paying it.

One combined fleet report for $0.75: Token Verdict's verdict on a token, RouteVerdict's delivery check and LockSmith's security audit summary on a service URL, and ListSmith's grade on a listing URL — four fleet services in one call. A failed leg is marked in the report, not hidden; only a total failure returns 502 and charges nothing. Use this when an agent is about to trust a token and a stall in the same workflow and wants one receipt instead of four payments.

Counterparty Report — one bundled report on one seller: the payTo's wallet snapshot, an OFAC SDN exact-match screen, and its Verdict Index listing history, plus a Token Verdict when you name a token, a LockSmith audit when you name a service URL, and a ListSmith grade when you name a listing URL. Legs that are not requested or cannot run are marked, never padded. Use this when an agent is about to rely on a seller it has never dealt with.

Ledger Dataset (summary) — per-origin rollup of the fleet's x402 observation ledger (Recheck history + held CDP catalogue snapshots): routes tracked, checks, change and recovery counts, derived defect classes, last-seen times, and full provenance (source counts, snapshot id). Observation data only — no operator contacts. Use this when you want the town-wide state of the x402 catalogue before buying the full per-route pull.

YouTube search results as clean JSON: title, video id, URL, channel, duration, and views for each result, scraped from the public results page with no API key. Use this when an agent needs to find a video mid-task and cannot drive a browser or hold a Google API key.

PayTo Pin Verify — check one pinned x402 route against its first-seen payTo set: a fresh unpaid probe compares the live payTo set with the pin's hash-committed baseline, answering MATCH, MOVED with before/after sets, or ROUTE_GONE as a delivered report. A swap fires one signed PAYTO_MOVED webhook per distinct new set. Pins are created free at POST /v1/payto-pin. Use this when a payTo swap must be caught before you pay the route again.

Fetch one web page and return its main content as clean Markdown with title and word count, extracted server-side. Private and loopback targets are refused. Use this when an agent needs to read a page inside a workflow without a browser and without wading through navigation and boilerplate.

Score Book — one x402 resource's, origin's, or payTo's track record from this service's own stores: recorded check counts and outcomes, first/last seen, the distinct prices and payTos its live sign has carried (change counts), its current fingerprint, and its presence across the catalogue snapshots held. Nothing is probed or invented — a target outside our records answers found=false. Use this when judging a stall needs its history, not just its current sign.

Sign Reader — read one x402 endpoint's 402 challenge: both wire formats (v2 PAYMENT-REQUIRED header, v1 JSON body) parsed and normalized (network, asset, amount atomic and exact decimal, payTo, scheme), malformed fields named, declared-vs-live mismatches (method included) when you pass your catalogue entry, and a compatibility verdict for the official Python and TypeScript x402 SDKs. Probe is unpaid. Use this when a checker's parser keeps choking on sellers' signs.

Guard — one pay / caution / avoid verdict for one x402 endpoint, composed from the row's inspector tools: the live 402 sign read and SDK-checked, the payTo screened against the bad-payTo registry (OFAC plus rotation/vanishing flags, evidence attached), and the resource's recorded history — unknown history caps the verdict at CAUTION. Every verdict carries its reasons; the one probe inside is unpaid. Use this when your agent is about to pay an endpoint it does not know.

A trust verdict for one Base wallet: OFAC SDN exact-match against a dated snapshot, wallet age, activity level, and an address-poisoning scan of its recent token transfers, combined into SAFE, CAUTION, or AVOID with a 0-100 score and itemized reasons. Use this when an agent must decide whether a wallet is safe to pay or take instructions from.

Decode one Base transaction into plain English: sender, receiver, ETH value, status, the known method behind the selector, every ERC-20 transfer it made, and a one-sentence summary. Use this when an agent needs to explain or verify what a transaction actually did before acting on it.

Receipt Verifier — a Base transaction hash in, a normalized verified receipt out: payer, payTo and amount from the USDC Transfer log, asset and network, settled status and confirmations. When the payTo is this fleet's own and the amount matches a priced route, routes at that price are listed as candidates — an amount alone never proves which route was called. Unknown transactions error honestly, unsettled. Use this when someone claims they paid and you want the chain's version. Base only.

Current Base gas in one call: the live gas price, the current base fee, the base-fee range across the last 20 blocks, whether fees are rising, falling, or flat, and a cheap-window hint drawn from that data. Use this when an agent wants to time a transaction instead of paying whatever the moment charges.

Timestamp SHA-256 hashes in Bitcoin with OpenTimestamps: returns a standard .ots proof per hash (pending, complete within hours), verifiable without us

Pearson correlation coefficient between two equal-length numeric series.

Nth percentile of a list of numbers (linear interpolation between closest ranks).

Ordinary least squares simple linear regression (y = slope*x + intercept) with R-squared.

Descriptive statistics for a list of numbers: count, mean, median, sample stdev/variance, min, max.

A transparent schedule-delay option-value heuristic for one infrastructure claim from caller-supplied facts. Classifies the claim by what approval operation it constrains and what violation does next, then multiplies structural delay by a supplied daily delay cost or an explicitly labeled capacity proxy. Not a legal opinion or prediction.

Summarize a URL, raw text or HTML at the length you request - short, medium or long - with the source noted. Neutral and factual, no invented facts. Try GET /summarize/sample. Part of the AgentIndex content kit (pdf, web-read, extract, summarize, detect-language) - see GET /capabilities.

Text classification with your own custom labels (2-20) - categorize a support ticket, a review, or any text into the best-fitting label, with a confidence score and an alternate label. Powered by Jev, falling back to a Groq-hosted LLM if Jev is slow or unavailable - under 4.5s guaranteed. Try GET /classify/sample.