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datasieve-mcp

by gitwormq
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datasieve-mcp

MCP server for DataSieve — standing infrastructure for AI agents, paid over x402. On-chain conditions on Base (wallet activity, whale transfers, price crossings, new pools), url-change web monitoring (CSS selector / regex scoped), dead-man switches for your own agents (your agent pings a URL; silence fires the alert), cron schedules (fire a webhook every N seconds, at a time, or on a cron expression), and multi-agent coordination (barriers + locks). Every event carries a signed Ed25519 observation receipt. No account, no API key: one gasless USDC payment per watch, signed locally — your key never leaves your machine. Failed calls are never billed.

Setup — no key required to start

claude mcp add datasieve -- npx -y datasieve-mcp

Most tools work with no wallet at all — check our scanner's health, read watch status, drain events, ping dead-man switches, pause/resume, verify receipts, cancel watches. Only the buying tools spend money.

The Claude Code skill (recommended)

npx -y datasieve-mcp --install-skill

Installs a skill into ~/.claude/skills/datasieve/ that teaches Claude when to reach for standing infrastructure proactively: arm a dead-man switch before long autonomous work, schedule wake-ups, watch pages and wallets, coordinate sub-agents.

When you want to buy

x402 means paying is a signature, so purchases need a key. Two rules:

  1. Use a dedicated burner wallet holding a few dollars of USDC on Base — never your main wallet. Payments are gasless (EIP-3009), so it needs no ETH.

  2. Keep the key out of config files — point at a file instead:

echo '0xYOUR_BURNER_KEY' > ~/.datasieve/key.txt && chmod 600 ~/.datasieve/key.txt
claude mcp add datasieve -e DATASIEVE_PRIVATE_KEY_FILE=$HOME/.datasieve/key.txt -- npx -y datasieve-mcp

(DATASIEVE_PRIVATE_KEY=0x... inline also works if you prefer.)

The key never leaves the process: each payment is a signature authorizing exactly the route price — one at a time, nothing standing. Run payment_status to see the wallet, its balance, and prices before spending anything.

Rehearse for free

claude mcp add datasieve-sandbox -e DATASIEVE_API_URL=https://staging.datasieve.xyz \
  -e DATASIEVE_PRIVATE_KEY_FILE=$HOME/.datasieve/key.txt -- npx -y datasieve-mcp

Same API, Base Sepolia, faucet USDC. Sandbox watches last 1 hour.

Related MCP server: Pylon MCP Server

Tools

tool

cost

what

create_watch

$0.10 (standard/7d) · $0.25 (composite/7d, ≤5 conditions) · $0.35 (standard30/30d) · $0.85 (composite30/30d)

buy a watch; returns id, secret, ping URLs

renew_watch

tier price

one more period, trigger budget reset

coord_workspace

$0.25 / 7d

multi-agent barriers + locks; every op after is free

cron_next

$0.001

parse a cron expression: next N run times, any timezone

x402_ping

$0.001

end-to-end payment stack self-test

watch_status

free

heartbeat, triggers, expiry, up/down per dead-man switch

drain_events

free

collect everything caught while you weren't running

pause_watch / resume_watch

free

stop firing without deleting; backlog-free resume

ping_heartbeat

free

keep your dead-man switch alive

verify_receipt

free

check the Ed25519 receipt on any delivered event

coord_barrier / coord_arrive / coord_lock / coord_release / coord_events

free

workspace ops

delete_watch

free

cancel

service_health

free

verify our scanner is alive before you pay

payment_status

free

wallet address, USDC balance, prices — "can I buy?"

Watch ids and secrets are remembered in ~/.datasieve/watches.json (mode 600), so follow-up calls only need the watch id — the persistent memory your ephemeral agent lacks.

This server cannot be installed

A
license - permissive license
-
quality - not tested
B
maintenance

How are these scores calculated?

Maintenance

–Maintainers
–Response time
–Release cycle
–Releases (12mo)
Commit activity

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Related MCP Connectors

  • Vibe Springs

    Pay-per-use weather, environment, finance, and on-chain intelligence tools for AI agents via x402.

  • Tollbooth Swap API

    Token swaps and honeypot/rug checks for AI agents on 8 chains, paid per-call in USDC via x402.

  • DDG Agent Services

    Pay-per-call x402 gateway: agent tools, OpenAI-compatible LLM, market data, RPC, security audits.

View all MCP Connectors

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