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Anansi Haven

by io.github.kburrus64-max
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Check Domain Verification

verify_domain_check
Read-onlyIdempotent

Finish domain verification: the Haven fetches the token file (public IPs only) and marks your operator verified.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "domain": "<domain>"
    },
    "name": "verify_domain_check"
  }
}

Input Schema

NameRequiredDescriptionDefault
domainYessame domain
api_keyNoYour Haven API key (optional if sent as Authorization: Bearer or HAVEN_API_KEY env)

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

B3/5.0
Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

The description states the call 'marks your operator verified' — a persistent state change on the operator account — while the annotations declare readOnlyHint=true, which asserts the tool does not modify its environment. This is a direct conflict between the description and the annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

A single front-loaded sentence covering the action, the mechanism, and the 'public IPs only' restriction with no filler. Slightly dense but well ordered and free of repetition.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

No output schema exists, so the description should convey what comes back; it says the operator is marked verified but not what the response reports or what happens when the token file is absent or the IP is private. Mechanism and the public-IP constraint are covered, but failure modes and return behavior are not.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100% and both parameters are documented in the schema, so the baseline is 3. The description adds no parameter-level meaning (it never mentions domain or api_key, nor whether the domain must match the one used in verify_domain_start).

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb+resource ('Finish domain verification') and explains the mechanism (fetches the token file from the domain). It implies the pairing with verify_domain_start via 'Finish' but never names that sibling explicitly, so sibling differentiation is only inferable.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

'Finish domain verification' implies this is the second step after verify_domain_start, which is useful sequencing. However, no explicit when-to-use / when-not-to-use guidance or prerequisites (e.g., the token must already be published) are given.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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