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KeeperHub Tab Anchor Verifier
x402
KeeperHub Tab Anchor Verifier is a paid API for AI agents from app.keeperhub.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).
Reads and verifies the on-chain anchor count for a given agent identifier (bytes32 hex) within a blockchain workflow automation context
Price / call$0.01
Success—
StatusUnknown
How this service works
Build powerful blockchain workflow automations with a visual, node-based editor. Built with Next.js and React Flow.
Output
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.
Example use cases
Audit blockchain agent anchor records
“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.”
Pre-flight check before workflow execution
“Before I run my next blockchain workflow, verify the anchor count for agent 0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef on KeeperHub so I know the baseline state.”
Monitor agent anchor growth over time
“Check KeeperHub for the current number of tab anchors on agent 0xdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef — I'm tracking whether it's been anchoring new tabs as expected.”
Technical details
Endpoint
POSThttps://app.keeperhub.com/api/mcp/workflows/tab-anchor-verifier/call?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| agentIdrequired | string | Agent identifier (bytes32 hex) whose anchor count to read |
Output
Schema · Response
{
"status": "running",
"executionId": "exec_abc123"
}Tags
x402
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