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Free pre-trade rug check (any Solana token, pons on Robinhood Chain)

token_check
Read-onlyIdempotent

Free. Coarse pre-trade rug check for one token: a Solana mint or link, or a Robinhood Chain pons 0x address or link. Returns verdict (avoid | caution | no_flags_observed), a reason and coverage; any other Solana mint gets a thin on-chain answer, never avoid on that evidence. Not a safety verdict. Next: verdict $0.01, mint_risk_card $0.025, rhc_curve_card $0.02. Use it first before you buy.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
mintNoAlias of token, either name works: takes a mint or a pump.fun/gmgn/solscan/birdeye link, or a pons 0x address.
tokenNoThe token to check. Solana: a mint or a pump.fun/gmgn/solscan/birdeye link (a base58 SPL or Token-2022 mint, 32-44 chars; a link is resolved to its mint). Robinhood Chain: a pons v2 curve or token address (0x + 40 hex), or its pons link (www.ponsfamily.com/launchpad/<token>) or explorer link (robinhoodchain.blockscout.com/token/<token>).

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
okNo
dataNo
metaNo
coverageNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed4 schema fields changed
    • addedInput schema / properties / mint
      Added value: +{
      +  "description": "Alias of token, either name works: takes a mint or a pump.fun/gmgn/solscan/birdeye link, or a pons 0x address.",
      +  "type": "string"
      +}
    • removedInput schema / properties / token / examples
      Removed value: -[
      -  "73sfnFgqQzpSRZSimCC4sxpubqghRGYewYLmiUH2pump",
      -  "https://pump.fun/coin/73sfnFgqQzpSRZSimCC4sxpubqghRGYewYLmiUH2pump",
      -  "0x1d63d24f2d6e726fa53c45cefcbee2c1b8ffa855"
      -]
    • removedInput schema / required
      Removed value: -[
      -  "token"
      -]
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
      +  "properties": {
      +    "coverage": {
      +      "type": "string"
      +    },
      +    "data": {
      +      "type": [
      +        "object",
      +        "null"
      +      ]
      +    },
      +    "meta": {
      +      "type": "object"
      +    },
      +    "ok": {
      +      "type": "boolean"
      +    }
      +  },
      +  "type": "object"
      +}
  2. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -{
      -  "anyOf": [
      -    {
      -      "properties": {
      -        "coverage": {
      -          "enum": [
      -            "full",
      -            "thin",
      -            "not_covered"
      -          ]
      -        },
      -        "data": {
      -          "properties": {
      -            "age_s": {
      -              "type": [
      -                "number",
      -                "null"
      -              ]
      -            },
      -            "chain": {
      -              "enum": [
      -                "solana",
      -                "robinhood_chain"
      -              ]
      -            },
      -            "coverage": {
      -              "enum": [
      -                "full",
      -                "thin",
      -                "not_covered"
      -              ]
      -            },
      -            "coverage_reason": {
      -              "type": [
      -                "string",
      -                "null"
      -              ]
      -            },
      -            "curve": {
      -              "type": [
      -                "string",
      -                "null"
      -              ]
      -            },
      -            "limits": {
      -              "type": "object"
      -            },
      -            "next": {
      -              "type": "object"
      -            },
      -            "note": {
      -              "type": "string"
      -            },
      -            "onchain": {
      -              "type": "object"
      -            },
      -            "reason": {
      -              "properties": {
      -                "code": {
      -                  "type": "string"
      -                },
      -                "text": {
      -                  "type": "string"
      -                }
      -              },
      -              "required": [
      -                "code",
      -                "text"
      -              ],
      -              "type": "object"
      -            },
      -            "rule": {
      -              "type": "string"
      -            },
      -            "token": {
      -              "type": "string"
      -            },
      -            "venue": {
      -              "type": "string"
      -            },
      -            "verdict": {
      -              "enum": [
      -                "avoid",
      -                "caution",
      -                "no_flags_observed",
      -                "no_flags_observed_on_chain",
      -                null
      -              ]
      -            }
      -          },
      -          "required": [
      -            "token",
      -            "chain",
      -            "verdict",
      -            "reason",
      -            "coverage",
      -            "age_s",
      -            "next"
      -          ],
      -          "type": "object"
      -        },
      -        "meta": {
      -          "type": "object"
      -        },
      -        "ok": {
      -          "const": true
      -        }
      -      },
      -      "required": [
      -        "ok",
      -        "schema_version",
      -        "generated_at",
      -        "t",
      -        "coverage",
      -        "data",
      -        "meta"
      -      ],
      -      "type": "object"
      -    },
      -    {
      -      "properties": {
      -        "error": {
      -          "type": "string"
      -        },
      -        "ok": {
      -          "const": false
      -        }
      -      },
      -      "required": [
      -        "ok",
      -        "error"
      -      ],
      -      "type": "object"
      -    }
      -  ],
      -  "type": "object"
      -}New value: +null
  3. Changed5 schema fields changed
    • changedInput schema / properties / token / description
      Previous value: -"The token to check. Solana: a mint or a pump.fun/gmgn/solscan/birdeye link (a base58 pump.fun mint, 32-44 chars; a link is resolved to its mint). Robinhood Chain: a pons v2 curve or token address (0x + 40 hex), or its pons link (www.ponsfamily.com/launchpad/<token>) or explorer link (robinhoodchain.blockscout.com/token/<token>)."New value: +"The token to check. Solana: a mint or a pump.fun/gmgn/solscan/birdeye link (a base58 SPL or Token-2022 mint, 32-44 chars; a link is resolved to its mint). Robinhood Chain: a pons v2 curve or token address (0x + 40 hex), or its pons link (www.ponsfamily.com/launchpad/<token>) or explorer link (robinhoodchain.blockscout.com/token/<token>)."
    • removedInput schema / properties / token / title
      Removed value: -"Token"
    • removedInput schema / title
      Removed value: -"token_checkArguments"
    • changedOutput schema / anyOf
      Previous value: -[
      -  {
      -    "properties": {
      -      "coverage": {
      -        "enum": [
      -          "full",
      -          "thin",
      -          "not_covered"
      -        ]
      -      },
      -      "data": {
      -        "properties": {
      -          "age_s": {
      -            "type": [
      -              "number",
      -              "null"
      -            ]
      -          },
      -          "chain": {
      -            "enum": [
      -              "solana",
      -              "robinhood_chain"
      -            ]
      -          },
      -          "coverage": {
      -            "enum": [
      -              "full",
      -              "thin",
      -              "not_covered"
      -            ]
      -          },
      -          "coverage_reason": {
      -            "type": [
      -              "string",
      -              "null"
      -            ]
      -          },
      -          "curve": {
      -            "type": [
      -              "string",
      -              "null"
      -            ]
      -          },
      -          "limits": {
      -            "type": "object"
      -          },
      -          "next": {
      -            "description": "The paid detail (tool, price_usd, url, adds) and the free record page.",
      -            "type": "object"
      -          },
      -          "note": {
      -            "type": "string"
      -          },
      -          "reason": {
      -            "properties": {
      -              "code": {
      -                "type": "string"
      -              },
      -              "text": {
      -                "type": "string"
      -              }
      -            },
      -            "required": [
      -              "code",
      -              "text"
      -            ],
      -            "type": "object"
      -          },
      -          "rule": {
      -            "type": "string"
      -          },
      -          "token": {
      -            "type": "string"
      -          },
      -          "venue": {
      -            "type": "string"
      -          },
      -          "verdict": {
      -            "description": "By the fixed public rule (/v1/labels); null when not covered.",
      -            "enum": [
      -              "avoid",
      -              "caution",
      -              "no_flags_observed",
      -              null
      -            ]
      -          }
      -        },
      -        "required": [
      -          "token",
      -          "chain",
      -          "verdict",
      -          "reason",
      -          "coverage",
      -          "age_s",
      -          "next"
      -        ],
      -        "type": "object"
      -      },
      -      "generated_at": {
      -        "type": "string"
      -      },
      -      "meta": {
      -        "properties": {
      -          "feed_lag_s": {
      -            "type": [
      -              "number",
      -              "null"
      -            ]
      -          },
      -          "is_stale": {
      -            "type": "boolean"
      -          }
      -        },
      -        "type": "object"
      -      },
      -      "ok": {
      -        "const": true
      -      },
      -      "schema_version": {
      -        "type": "string"
      -      },
      -      "t": {
      -        "type": "number"
      -      }
      -    },
      -    "required": [
      -      "ok",
      -      "schema_version",
      -      "generated_at",
      -      "t",
      -      "coverage",
      -      "data",
      -      "meta"
      -    ],
      -    "title": "TokenCheck",
      -    "type": "object"
      -  },
      -  {
      -    "description": "isError: the x402 v2 payment requirements. Pay one accepts entry and call again with _meta['x402/payment']. error says why when a payment was sent and rejected; a failed settlement adds x402/payment-response. Nothing is charged.",
      -    "properties": {
      -      "accepts": {
      -        "items": {
      -          "properties": {
      -            "amount": {
      -              "type": "string"
      -            },
      -            "asset": {
      -              "type": "string"
      -            },
      -            "extra": {
      -              "type": "object"
      -            },
      -            "maxTimeoutSeconds": {
      -              "type": "integer"
      -            },
      -            "network": {
      -              "type": "string"
      -            },
      -            "payTo": {
      -              "type": "string"
      -            },
      -            "scheme": {
      -              "type": "string"
      -            }
      -          },
      -          "required": [
      -            "scheme",
      -            "network",
      -            "amount",
      -            "asset",
      -            "payTo"
      -          ],
      -          "type": "object"
      -        },
      -        "minItems": 1,
      -        "type": "array"
      -      },
      -      "error": {
      -        "type": "string"
      -      },
      -      "extensions": {
      -        "type": "object"
      -      },
      -      "resource": {
      -        "properties": {
      -          "description": {
      -            "type": "string"
      -          },
      -          "mimeType": {
      -            "type": "string"
      -          },
      -          "url": {
      -            "type": "string"
      -          }
      -        },
      -        "required": [
      -          "url"
      -        ],
      -        "type": "object"
      -      },
      -      "x402/payment-response": {
      -        "properties": {
      -          "errorReason": {
      -            "type": "string"
      -          },
      -          "network": {
      -            "type": "string"
      -          },
      -          "success": {
      -            "type": "boolean"
      -          },
      -          "transaction": {
      -            "type": "string"
      -          }
      -        },
      -        "required": [
      -          "success"
      -        ],
      -        "type": "object"
      -      },
      -      "x402Version": {
      -        "const": 2
      -      }
      -    },
      -    "required": [
      -      "x402Version",
      -      "resource",
      -      "accepts"
      -    ],
      -    "title": "PaymentRequired",
      -    "type": "object"
      -  },
      -  {
      -    "description": "isError: a refusal answered without charging (invalid or uncovered arguments, stale feed, nothing new since the cursor, a payment that cannot be matched to this request). error is a stable code; live_examples name mints covered now.",
      -    "properties": {
      -      "address": {
      -        "type": "string"
      -      },
      -      "avoid_skipped": {
      -        "type": "integer"
      -      },
      -      "case_mangled_mints": {
      -        "items": {
      -          "type": "string"
      -        },
      -        "type": "array"
      -      },
      -      "charged": {
      -        "type": [
      -          "boolean",
      -          "null"
      -        ]
      -      },
      -      "curve": {
      -        "type": "string"
      -      },
      -      "error": {
      -        "type": "string"
      -      },
      -      "feed_lag_s": {
      -        "type": [
      -          "number",
      -          "null"
      -        ]
      -      },
      -      "free_check": {
      -        "type": "string"
      -      },
      -      "got": {
      -        "type": [
      -          "string",
      -          "integer"
      -        ]
      -      },
      -      "hint": {
      -        "type": "string"
      -      },
      -      "invalid": {
      -        "type": "object"
      -      },
      -      "live_examples": {
      -        "items": {
      -          "type": "string"
      -        },
      -        "type": "array"
      -      },
      -      "max_feed_lag_s": {
      -        "type": "number"
      -      },
      -      "max_mints": {
      -        "type": "integer"
      -      },
      -      "max_table_lag_s": {
      -        "type": "number"
      -      },
      -      "message": {
      -        "type": "string"
      -      },
      -      "mint": {
      -        "type": "string"
      -      },
      -      "missing": {
      -        "items": {
      -          "type": "string"
      -        },
      -        "type": "array"
      -      },
      -      "newest_cursor": {
      -        "type": "string"
      -      },
      -      "ok": {
      -        "const": false
      -      },
      -      "payment_status": {
      -        "type": "string"
      -      },
      -      "scanned": {
      -        "type": "integer"
      -      },
      -      "schema": {
      -        "type": "object"
      -      },
      -      "since": {
      -        "type": [
      -          "string",
      -          "null"
      -        ]
      -      },
      -      "table_lag_s": {
      -        "type": [
      -          "number",
      -          "null"
      -        ]
      -      },
      -      "tool": {
      -        "type": "string"
      -      },
      -      "unavailable_mints": {
      -        "items": {
      -          "type": "string"
      -        },
      -        "type": "array"
      -      },
      -      "unverified_event": {
      -        "type": [
      -          "object",
      -          "null"
      -        ]
      -      },
      -      "window_s": {
      -        "type": "number"
      -      }
      -    },
      -    "required": [
      -      "ok",
      -      "error"
      -    ],
      -    "title": "Refusal",
      -    "type": "object"
      -  }
      -]New value: +[
      +  {
      +    "properties": {
      +      "coverage": {
      +        "enum": [
      +          "full",
      +          "thin",
      +          "not_covered"
      +        ]
      +      },
      +      "data": {
      +        "properties": {
      +          "age_s": {
      +            "type": [
      +              "number",
      +              "null"
      +            ]
      +          },
      +          "chain": {
      +            "enum": [
      +              "solana",
      +              "robinhood_chain"
      +            ]
      +          },
      +          "coverage": {
      +            "enum": [
      +              "full",
      +              "thin",
      +              "not_covered"
      +            ]
      +          },
      +          "coverage_reason": {
      +            "type": [
      +              "string",
      +              "null"
      +            ]
      +          },
      +          "curve": {
      +            "type": [
      +              "string",
      +              "null"
      +            ]
      +          },
      +          "limits": {
      +            "type": "object"
      +          },
      +          "next": {
      +            "type": "object"
      +          },
      +          "note": {
      +            "type": "string"
      +          },
      +          "onchain": {
      +            "type": "object"
      +          },
      +          "reason": {
      +            "properties": {
      +              "code": {
      +                "type": "string"
      +              },
      +              "text": {
      +                "type": "string"
      +              }
      +            },
      +            "required": [
      +              "code",
      +              "text"
      +            ],
      +            "type": "object"
      +          },
      +          "rule": {
      +            "type": "string"
      +          },
      +          "token": {
      +            "type": "string"
      +          },
      +          "venue": {
      +            "type": "string"
      +          },
      +          "verdict": {
      +            "enum": [
      +              "avoid",
      +              "caution",
      +              "no_flags_observed",
      +              "no_flags_observed_on_chain",
      +              null
      +            ]
      +          }
      +        },
      +        "required": [
      +          "token",
      +          "chain",
      +          "verdict",
      +          "reason",
      +          "coverage",
      +          "age_s",
      +          "next"
      +        ],
      +        "type": "object"
      +      },
      +      "meta": {
      +        "type": "object"
      +      },
      +      "ok": {
      +        "const": true
      +      }
      +    },
      +    "required": [
      +      "ok",
      +      "schema_version",
      +      "generated_at",
      +      "t",
      +      "coverage",
      +      "data",
      +      "meta"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "properties": {
      +      "error": {
      +        "type": "string"
      +      },
      +      "ok": {
      +        "const": false
      +      }
      +    },
      +    "required": [
      +      "ok",
      +      "error"
      +    ],
      +    "type": "object"
      +  }
      +]
    • removedOutput schema / description
      Removed value: -"One of three shapes. Success (isError false): the JSON envelope {ok, schema_version, generated_at, t, coverage, data, meta}. isError true: the x402 PaymentRequired {x402Version 2, resource, accepts[, error]} (pay and call again) or a refusal {ok: false, error, message, charged: false}; neither is charged."
  4. Changed1 schema field changed
    • changedInput schema / properties / token / description
      Previous value: -"The token to check. Solana: a mint or a pump.fun/gmgn/solscan/birdeye link (a base58 pump.fun mint, 32-44 chars; a link is resolved to its mint). Robinhood Chain: a pons v2 curve or token address (0x + 40 hex)."New value: +"The token to check. Solana: a mint or a pump.fun/gmgn/solscan/birdeye link (a base58 pump.fun mint, 32-44 chars; a link is resolved to its mint). Robinhood Chain: a pons v2 curve or token address (0x + 40 hex), or its pons link (www.ponsfamily.com/launchpad/<token>) or explorer link (robinhoodchain.blockscout.com/token/<token>)."
  5. Added

TDQS

A3.9/5.0
Behavior4/5

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

Annotations cover the safety profile (readOnly, idempotent, non-destructive), so the description earns credit for adding real behavioral context: the exact verdict vocabulary, the coverage field, and the important limitation that certain Solana mints get only a 'thin on-chain answer'. The 'Not a safety verdict' disclaimer is genuinely useful. It does not disclose rate limits or latency, which is a minor gap.

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?

Front-loaded with 'Free' and the check scope, and the sentences are dense with no filler. The upsell sentence listing four sibling prices is slightly cluttered but still earns its place for routing.

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

Completeness4/5

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

An output schema exists, so return values need not be explained, and the description still names the verdict values and coverage. Combined with annotations and rich schema descriptions, an agent has enough to call this correctly; only escalation criteria between the paid siblings remain underspecified.

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 the schema already documents accepted link formats and length constraints in detail. The description repeats that a mint or link is accepted, adding little beyond the schema, so the baseline of 3 is appropriate.

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?

The description states a specific verb and resource: a 'coarse pre-trade rug check for one token' across two chain types, with the accepted identifiers named. It's differentiated by being the free, coarse tier, but the sibling landscape (verdict, mint_risk_card, etc.) is only referenced by price in the upsell line, not by function.

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

Usage Guidelines4/5

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

'Use it first before you buy' gives a clear triggering context, and the 'thin on-chain answer...never avoid on that evidence' clause tells the agent what NOT to conclude. It names next-tier alternatives by price but does not describe when to escalate to verdict vs mint_risk_card vs rhc_curve_card.

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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