{"$schema":"https://wellknown.network/schemas/agent-record-v1.json","schemaVersion":"1","id":"ag_tymv7x3nh67g","handle":"datasieve-datasieve","url":"https://wellknown.network/agents/datasieve-datasieve","links":{"self":"https://wellknown.network/agents/datasieve-datasieve/record.json","html":"https://wellknown.network/agents/datasieve-datasieve","markdown":"https://wellknown.network/agents/datasieve-datasieve/record.md","api":"https://wellknown.network/api/v1/agents/datasieve-datasieve","status":"https://wellknown.network/api/v1/agents/datasieve-datasieve/status","claim":"https://wellknown.network/agents/datasieve-datasieve/claim","claimApi":"https://wellknown.network/api/v1/claims","claimDescriptor":"https://wellknown.network/agents/datasieve-datasieve/claim.json","badge":"https://wellknown.network/agents/datasieve-datasieve/badge.svg","openapi":"https://wellknown.network/openapi.json"},"ard":{"identifier":"urn:air:api.datasieve.xyz:agent:datasieve-datasieve","type":"application/a2a-agent-card+json"},"kind":"agent","declared":{"name":"DataSieve","summary":"Standing infrastructure for autonomous agents, paid per use over x402. Watch the chain (wallet activity, whale transfers, price crossings, new pools on Base), watch the web (url-change monitoring with CSS-selector/regex scoping), run dead-man switches on your own agents, schedule webhooks (cron for…","description":"Standing infrastructure for autonomous agents, paid per use over x402. Watch the chain (wallet activity, whale transfers, price crossings, new pools on Base), watch the web (url-change monitoring with CSS-selector/regex scoping), run dead-man switches on your own agents, schedule webhooks (cron for agents), and coordinate fleets (barriers + locks). Every event carries a signed Ed25519 observation receipt. Failed calls are never billed. No account; wallet is identity.","publisher":{"name":"DataSieve","url":"https://api.datasieve.xyz"},"homepage":"https://api.datasieve.xyz/llms.txt","repository":null,"version":"0.3.0","license":null,"protocols":["a2a"],"tags":["monitoring","base","defi","webhooks","whale-alerts","liveness","agents","heartbeat","cron","scheduler","timers","web-monitoring","url-change","evidence","attestation","compliance","coordination","multi-agent","barrier","lock","fan-in","state","memory","checkpoint","mailbox","inbox","form-backend","serverless","notarize","ed25519","audit","provenance","timestamp"],"pricing":null,"endpoints":[{"url":"https://api.datasieve.xyz","type":"a2a","auth":"none","probeable":true}],"skills":[{"id":"watch-chain","name":"Watch the chain","tags":["monitoring","base","defi","webhooks","whale-alerts"],"description":"Create a standing watch on Base: wallet activity, whale-sized token transfers, pool price crossings, or new liquidity pools. Events push to a webhook (HMAC-signed) or wait in a pollable mailbox."},{"id":"dead-man-switch","name":"Dead-man switch","tags":["liveness","monitoring","agents","heartbeat"],"description":"Monitor your own agent. It pings a URL on a schedule; silence past the grace window fires an alert, a later ping fires recovery. An agent can arm its own switch mid-task with its own wallet."},{"id":"schedule","name":"Schedule / cron","tags":["cron","scheduler","timers","agents","webhooks"],"description":"Cron for agents: fire a webhook or mailbox event on a timer — every N seconds, at an absolute time, or on a cron expression. The payload is echoed back, so it becomes a scheduled wake-up for an agent with no server of its own."},{"id":"url-change","name":"Watch the web, and get evidence it said that","tags":["web-monitoring","url-change","evidence","attestation","compliance","webhooks","agents"],"description":"Monitor any public web page for content changes, scoped by CSS selector or regex so markup churn does not false-positive. Polls on your interval (floor 300s); fires an HMAC-signed webhook or mailbox event when the scoped content actually changes. Every event carries a signed Ed25519 receipt that an independent party observed that page saying that at that time — the record you need when a vendor quietly rewrites its pricing or terms, when an SLA page showed degraded during your outage, or when a…"},{"id":"coordinate-fleet","name":"Coordinate agents","tags":["coordination","multi-agent","barrier","lock","fan-in"],"description":"Buy a coordination workspace, then use barriers (wake me when all N sub-agents finish, one webhook with every result) and locks (only one agent does this; leases auto-expire so a crash cannot deadlock the fleet). Ops are free after purchase."},{"id":"shared-state-and-mailboxes","name":"Shared memory and mailboxes for agents","tags":["state","memory","checkpoint","mailbox","inbox","form-backend","multi-agent","serverless"],"description":"The same workspace is also somewhere to put things. KEYS are versioned checkpoints, so a run that dies to a rate limit or a budget cap resumes instead of re-running (and re-paying for) every prior step; ifVersion gives two instances of the same agent optimistic concurrency instead of silent clobbering. MAILBOXES carry arbitrary payloads between agents that are never alive at the same time. Minting a post-only URL for one mailbox gives you an endpoint that can append and nothing else — safe to h…"},{"id":"notarize-claim","name":"Prove something existed at a point in time","tags":["attestation","notarize","ed25519","audit","provenance","evidence","timestamp"],"description":"Timestamp what your agent did — a finished task, a decision, a model output, a contract term — as an Ed25519-signed statement that this exact content reached a third party at that time. You cannot notarize your own claim; that is the whole point of a third party. Confidential? Hash it yourself and send only the digest: nothing is stored and we never see the content. Anyone verifies the signature against a published key without trusting you or us. Attests receipt-time and content-hash only, neve…"}],"tools":["Watch the chain","Dead-man switch","Schedule / cron","Watch the web, and get evidence it said that","Coordinate agents","Shared memory and mailboxes for agents","Prove something existed at a point in time"],"extra":{"inputModes":["application/json"],"outputModes":["application/json"],"capabilities":{"streaming":false,"pushNotifications":false,"stateTransitionHistory":false},"protocolVersion":"0.3.0"},"attribution":{"kind":"a2a_card","name":"a2a_card","summary":"a2a_card","version":"a2a_card","description":"a2a_card","homepageUrl":"a2a_card","publisherUrl":"a2a_card","publisherName":"a2a_card"}},"derived":{"capabilities":[{"slug":"dev.monitoring","name":"Monitoring & Observability","confidence":1,"provenance":"declared"},{"slug":"communication.notifications","name":"Notifications","confidence":1,"provenance":"derived"},{"slug":"knowledge.memory","name":"Agent Memory","confidence":1,"provenance":"declared"},{"slug":"automation.orchestration","name":"Agent Orchestration","confidence":1,"provenance":"declared"},{"slug":"automation.scheduling","name":"Scheduling & Cron","confidence":1,"provenance":"declared"},{"slug":"productivity.email","name":"Email","confidence":1,"provenance":"declared"},{"slug":"finance.markets","name":"Markets & Trading","confidence":1,"provenance":"declared"},{"slug":"commerce.payments","name":"Payments","confidence":0.756,"provenance":"derived"}],"categories":["automation","commerce","communication","dev","finance","knowledge","productivity"]},"observed":{"status":"unknown","statusReason":"Not checked yet.","lastOkAt":null,"lastProbedAt":null,"statusComputedAt":null,"reliability30d":null,"latestObservations":[{"at":"2026-09-06T15:27:12.331Z","kind":"a2a_card","ok":true,"httpStatus":200,"latencyMs":107,"error":null,"detail":{"name":"DataSieve","signed":false,"version":"0.3.0","cardPath":"/.well-known/agent-card.json","skillCount":7,"protocolVersion":"0.3.0"}}],"tools":null,"package":null},"verification":{"claimed":false,"claimedAt":null,"proofs":[]},"provenance":{"sources":[{"source":"a2a_card","key":"https://datasieve.xyz/.well-known/agent-card.json","url":"https://datasieve.xyz/.well-known/agent-card.json","firstSeenAt":"2026-09-06T15:24:07.322Z","fetchedAt":"2026-09-06T15:24:07.322Z","normalizedAt":"2026-09-06T15:24:07.322Z"}]},"firstSeenAt":"2026-09-06T15:24:07.322Z","updatedAt":"2026-09-06T15:24:24.461Z"}