Nsgoods Workbench MCP
Read only x402 catalogue: payability verdicts, prices, drift, host status, signatures. No wallet.
Connect it
Settings → Connectors → Add custom connector
URL: https://mcp.nsgoods.org/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://mcp.nsgoods.org/mcp{
"mcpServers": {
"nsgoods-workbench-mcp": {
"url": "https://mcp.nsgoods.org/mcp"
}
}
}claude mcp add --transport http nsgoods-workbench-mcp https://mcp.nsgoods.org/mcp{
"servers": {
"nsgoods-workbench-mcp": {
"type": "http",
"url": "https://mcp.nsgoods.org/mcp"
}
}
}8 tools, verified live
payability_verdictread-onlyLatest payability observation for one exact resource URL (path and query included), with the meaning of the verdict, remediation if it cannot be paid, and the per-network options seen. last_checked_at is the currency claim: the last time any scan or reprobe looked at this resource. in_latest_scan means only that the resource was in the latest full scan; a row reprobed the same day can carr
find_endpointsread-onlySearch the catalogue by host or URL substring. Returns up to `limit` endpoints (max 50) with their latest verdict, plus the total match count. Use this first when you do not know the exact resource URL. Rows with in_latest_scan=false were not in the latest full scan; read last_checked_at for when they were last probed. Optional network filter (for example eip155:8453 or solana:5eykt4Us
catalogue_statsread-onlySize and health of the x402 catalogue as of the latest full scan: resources, hosts, verdict counts, and payable endpoints per network.
host_summaryread-onlySummary for a host (no time series): first/last seen, current verdict mix, n_resources, total verdict changes, gone_since if absent from the latest full scan, and a small resources_sample. Sample rows with in_latest_scan=false were not in the latest full scan; read last_checked_at for when they were last probed. n_resources counts every resource ever seen for this host; current_verdict
x401_statusread-onlyCurrent x401 emitter adoption across the scanned catalogue (from the daily watcher).
drift_statusread-onlyVerdict changes between the two latest full scans (catalogue wide, or for one host), plus the declared model drift watch.
verify_signatureread-onlyOffline EIP-191 verify of a signed nsgoods response. Identifies the service from the manifest (or the optional `service` arg), strips exactly that service's post-sign fields, canonicalises (JCS, both ASCII modes), recovers the signer and checks it against the published manifest signers. Reproduction-attestation (JCS/byte-length) and envelope (signer/signature, components) shapes ar
reportsread-onlyPublished weekly payability reports (from the signed manifest).
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