{"uid":"cap_q6mUDaQGVaOOPXVh4EVWM","slug":"keeperhub-tab-anchor-verifier-72cab0af","name":"KeeperHub Tab Anchor Verifier","description":"Build powerful blockchain workflow automations with a visual, node-based editor. Built with Next.js and React Flow.","url":"https://app.keeperhub.com/api/mcp/workflows/tab-anchor-verifier/call?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["agentId"],"properties":{"agentId":{"type":"string","description":"Agent identifier (bytes32 hex) whose anchor count to read"}}},"responseSchema":{"status":"running","executionId":"exec_abc123"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_xwlzN2M9tHD7F6BTjJ6CT","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Reads and verifies the on-chain anchor count for a given agent identifier (bytes32 hex) within a blockchain workflow automation context","exampleAgentPrompt":"Check the tab anchor count on KeeperHub for agent ID 0x3a1b2c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b — I need to know how many anchors are currently recorded on-chain for that agent.","exampleUseCases":[{"title":"Audit blockchain agent anchor records","prompt":"Can you pull the current tab anchor count for my KeeperHub agent with ID 0xabc123...def456? I want to audit how many on-chain anchors it has recorded before I trigger the next automation step."},{"title":"Pre-flight check before workflow execution","prompt":"Before I run my next blockchain workflow, verify the anchor count for agent 0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef on KeeperHub so I know the baseline state."},{"title":"Monitor agent anchor growth over time","prompt":"Check KeeperHub for the current number of tab anchors on agent 0xdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef — I'm tracking whether it's been anchoring new tabs as expected."}],"resultDescription":"Returns a workflow execution status (e.g. 'running') and an execution ID (e.g. 'exec_abc123') that can be used to track or retrieve the actual anchor count result for the queried agent.","failureModes":["Invalid or malformed agentId (not valid bytes32 hex) returns a 400-level error","Agent ID not found on-chain returns empty or zero anchor count","Payment failure (insufficient USDC balance) blocks the call with a 402 error","Network or blockchain node unavailability causes timeout or 503 error","Execution ID returned but underlying workflow fails asynchronously"],"whenToPreferThis":"Use this endpoint when you need to programmatically verify how many on-chain tab anchors a specific KeeperHub blockchain automation agent has registered, especially as part of a pre-execution check, audit trail, or conditional workflow branch that depends on anchor state.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T06:32:06.238Z","isFirstParty":false,"canonicalSlug":"keeperhub-tab-anchor-verifier-72cab0af"}