# GENESIS Agent Tools — Agent/MCP Assurance Check (Dexter)

> GENESIS Agent Tools — Agent/MCP Assurance Check (Dexter) is a paid API for AI agents from genesis-agent-tools.genesisagenttools.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-02).

Performs quick or deep assurance checks on agent tools, MCP cards, or instructions to assess readiness, compatibility, and safety for autonomous agent use.

## Facts

- Endpoint: POST https://genesis-agent-tools.genesisagenttools.workers.dev/api/flagships/agent-assurance/facilitator/dexter?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/genesis-agent-tools-agent-mcp-assurance-check-dexter-e51ba29c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KpXcFw7_IQaAz9rUL1PP9

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability genesis-agent-tools-agent-mcp-assurance-check-dexter-e51ba29c -d '<json body>'
```

Example prompt: Run a deep assurance check on this MCP card — I want to know if it's agent-ready, what evidence supports that, and whether there are any warnings I should worry about before deploying it.

## When to prefer this

Choose this endpoint when you need to validate an MCP tool card, agent tool definition, or instruction set for autonomous agent readiness before deployment. It is specifically designed for the agent/MCP ecosystem and returns structured evidence and warnings, making it more useful than generic API linters or schema validators when the goal is assessing agent-specific compatibility and safety.

## Known failure modes

- Invalid or missing tier enum value returns validation error
- Malformed card or tool object causes parse failure
- Empty or null input object may return empty result with no evidence
- Payment failure via x402 prevents call from being processed
- Deep tier may time out on very large instruction sets

## How this service works

Pay-per-call x402 APIs for autonomous agents on Base USDC: API compatibility analysis, bounded HTTP/JSON workflows, URL evidence analysis, crypto price consensus, and agent/MCP readiness checks.

## Output

Returns a JSON object with ok status, the assurance tier used, a result object with the assessment details, a product identifier ('agent-assurance'), an evidence array supporting the findings, and a warnings array listing any detected issues or incompatibilities.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "tier": {
   "enum": [
    "quick",
    "deep"
   ],
   "type": "string"
  },
  "input": {
   "type": "object",
   "properties": {
    "card": {
     "type": "object"
    },
    "text": {
     "type": "string"
    },
    "tool": {
     "type": "object"
    },
    "instructions": {
     "type": "array"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "tier": "quick",
  "result": {},
  "product": "agent-assurance",
  "evidence": [],
  "warnings": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/genesis-agent-tools-agent-mcp-assurance-check-dexter-e51ba29c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from genesis-agent-tools.genesisagenttools.workers.dev](https://www.zero.xyz/host/genesis-agent-tools.genesisagenttools.workers.dev/llms.txt)