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PlainText Wallet Approval Checker

by io.github.Fizzl13
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Server Details

Explains wallet approvals and signature requests in plain language: SAFE, CAUTION or RISK.

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Status
Healthy
Uptime
99.8% over 19 days
Last Tested
Transport
Streamable HTTP · MCP 2025-11-25
URL
Repository
Fizzl13/SmartContractExplainer
GitHub Stars
1

TDQS

A4.1/5.0

Scored across 3 tools

Disambiguation5/5

Each tool has a clearly distinct purpose: check_wallet_approvals performs an on-chain lookup and returns a verdict, explain_approval processes a provided JSON payload, and feedback collects user reports. There is no overlap between the tools, and the descriptions explicitly clarify when to use each.

Naming Consistency4/5

Two tools follow a verb_noun pattern (check_wallet_approvals, explain_approval), but feedback is a bare noun and there is a minor inconsistency between 'approvals' (plural) and 'approval' (singular). This is a small deviation from an otherwise predictable convention.

Tool Count5/5

Three tools are well-scoped for a focused wallet approval checker. Each tool earns its place: one for on-chain checking, one for off-chain explanation, and one for feedback. There is no bloat or missing essential functionality.

Completeness5/5

The surface covers the core lifecycle of approval checking: on-chain lookup with verdict, explanation of raw approval data, and a feedback channel. No obvious gaps exist for the stated domain; revocation is intentionally out of scope.

Available Tools

3 tools
check_wallet_approvalsCheck Wallet ApprovalsInspect

Check an EVM wallet's live token/NFT approvals and get a plain-language safety verdict (SAFE, CAUTION, or RISK) with an explanation. The verdict comes from presign-guard's approval audit (who each spender is, which to revoke).

ParametersJSON Schema
NameRequiredDescriptionDefault
kindNoApproval type to check (default: token)
chainNoChain to check approvals on (default: ethereum)
addressYesEVM wallet address to check, e.g. 0x...

Output Schema

ParametersJSON Schema
NameRequiredDescription
verdictYesSAFE, CAUTION or RISK
explanationYesPlain-language explanation of what the approval or payload allows
explain_approvalExplain Approval PayloadInspect

Explain an arbitrary approval/permission JSON payload in plain language, when you already have the data instead of needing an on-chain lookup.

ParametersJSON Schema
NameRequiredDescriptionDefault
dataYesArbitrary approval/permission JSON payload to explain

Output Schema

ParametersJSON Schema
NameRequiredDescription
verdictYesSAFE, CAUTION or RISK
explanationYesPlain-language explanation of what the approval or payload allows
feedbackSend feedback (free)Inspect

Report a bug, a missing feature or anything else about this service, in a structured way. Free. A person reads every report; nothing is run or changed automatically.

ParametersJSON Schema
NameRequiredDescriptionDefault
typeNobug, feature (something missing) or other
contactNoOptional: how to reach you about it
messageYesWhat happened or what you need
endpointNoOptional: the route or tool it is about, e.g. /v1/token

Output Schema

ParametersJSON Schema
NameRequiredDescription
idYesReport id, to refer to it later
noteNo
typeNo
serviceNo
receivedYestrue: a person will read it

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

  1. 3 tool updates
    • Changedcheck_wallet_approvals1 field changed
      • changedOutput schema / (root)
        Previous value: -nullNew value: +{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "additionalProperties": {},
+  "properties": {
+    "explanation": {
+      "description": "Plain-language explanation of what the approval or payload allows",
+      "type": "string"
+    },
+    "verdict": {
+      "description": "SAFE, CAUTION or RISK",
+      "type": "string"
+    }
+  },
+  "required": [
+    "verdict",
+    "explanation"
+  ],
+  "type": "object"
+}
    • Changedexplain_approval1 field changed
      • changedOutput schema / (root)
        Previous value: -nullNew value: +{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "additionalProperties": {},
+  "properties": {
+    "explanation": {
+      "description": "Plain-language explanation of what the approval or payload allows",
+      "type": "string"
+    },
+    "verdict": {
+      "description": "SAFE, CAUTION or RISK",
+      "type": "string"
+    }
+  },
+  "required": [
+    "verdict",
+    "explanation"
+  ],
+  "type": "object"
+}
    • Changedfeedback1 field changed
      • changedOutput schema / (root)
        Previous value: -nullNew value: +{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "additionalProperties": {},
+  "properties": {
+    "id": {
+      "description": "Report id, to refer to it later",
+      "type": "string"
+    },
+    "note": {
+      "type": "string"
+    },
+    "received": {
+      "description": "true: a person will read it",
+      "type": "boolean"
+    },
+    "service": {
+      "type": "string"
+    },
+    "type": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "received",
+    "id"
+  ],
+  "type": "object"
+}
  2. 1 tool update
    • Addedfeedback
  3. 2 tool updates
    • First observedcheck_wallet_approvals
    • First observedexplain_approval

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