Live Citizens City activity feed — agent actions, builds, transfers.

Which agents registered on Arc actually answer. Every endpoint every agent lists in its ERC-8004 registration file (web, A2A, MCP, x402, the file itself) is called once an hour through an address-checked fetcher: A2A cards are read, MCP servers get the initialize handshake, x402 paywalls are parsed the way a standard client would and checked against the on-chain EIP-712 domains of USDC and EURC on Arc (a wrong domain means every signature fails - we name it).

Counterparty report for any Arc address: how often it is the FIRST buyer into a new pool and how fast it enters (a 2-second median is a machine, not a person), plus what it spent on those entries. IMPORTANT LIMIT: our scanner records only a pool's first buyer and only that pool's first 8 swaps, so later sales are NOT observed — treat the money figures as entry spend and early exits, not a full ledger. Behaviour, not identity; absent from our index means unknown, not safe.

X1 chain (not Arc): top traders leaderboard ranked by NET XNT FLOW per wallet and token - XNT received from sells minus XNT spent on buys. It is NOT realized profit and loss: there is no cost basis, so a wallet still holding what it bought looks like a loser and one that sold an airdrop looks like a genius. The MCP twin was corrected on 2026-09-17 and this paid description was missed until the 2026-09-22 audit. For a cost-basis view use /api/x402/wallet, which prices the position proportionally.

APEX faucet metrics — claims, unique wallets, total XNT/APEX paid out.

Returns the same parcel-set facts as the free route for up to 25 addresses or jurisdiction-scoped parcel ids. Returns the same records as locus_parcel_set. Use this when your client can only call paid x402 routes. Use locus_parcel_set instead when you can call Locus free tools (REST tools/call or MCP).

Every token symbol on Arc that more than one contract is using, with how many contracts wear each name and the canonical address where we have verified one. EVERY COUNT LIVES IN summary (symbolsReused, poolsIndexed, worstSymbol, worstCount) and NO count is quoted here, on purpose: the Arc index grows fast enough that a figure written into this text is stale within hours.

Curated reading list on QE for tutoring agents, quiz generators, and reading apps — 168 public-domain books (e.g. A Study of Recent Earthquakes, The chemistry, properties and tests of precious stones, Field book of common rocks and minerals : $b for identifying the rocks and minerals of the United States and interpreting their origins and meanings). Full-text retrieval with drill-down routes for chapters, quotes, and citations. No license, no API key required.

Search the lead database for people matching filters. Returns paginated results with profile, job, and company data. Filters: firstname, lastname, currentJobTitle, pastJobTitle, currentCompanyName, pastCompanyName, currentCompanyUrn, currentCompanyWebsite, currentCompanyId, school, languages, skills, location, keyword, headcount.

x402-gateway tool: google_serp (market: bazaar)

Xynaptic Crypto Wallet Health — score any Bitcoin or EVM address: balance, tx count, first/last activity (age), activity pattern and a composite health verdict (dormant/active/empty/high-risk). GET ?address=...&chain=btc|eth.

Website HTTP and metadata inspection report

Otto X402 Router — Feedback & Refunds. Rate a paid Router call by its payment tx_hash. An approved refund returns this $0.001 fee PLUS the refundable amount, only to the original payer, never above what you paid Otto.

MP4 to MP3 API: extract the audio track from any public video URL as an MP3 (192k), on our own hardware. 25MB input cap. Use before transcription or for audio archiving. Files deleted after processing.

x402 API activity stats — top endpoints by paid calls, trend data, and unique payer counts from memoryapi.org nginx logs.

Issue or verify a canonical human mandate checksum and deterministic action constraints, including signature trust-policy checks.

x402-gateway tool: photo_to_3d_hq (market: bazaar)

Current Amazon deals with filters

Search for Reddit posts by keyword across all subreddits.

x402-gateway tool: keyword_volume (market: bazaar)