HubVibe: Pay-per-Call Agent Tools: Web Search, Email Verify, KYC Screening, Stocks, Crypto, News

Market intelligence read

hubvibe_market_intel

Read-onlyIdempotent

Crypto market sentiment in one call: live Coinbase spot price, live Polymarket probabilities and recent news headlines (GDELT) on the same subject, analysed together in a written summary that says what the numbers do and do not support. Use it for a quick read on Bitcoin, Ethereum or any coin. Input: optional product_id (BTC-USD...), query, question, limit. Market data only, not investment advice. $5.00 per call. Returns: spot{}, prediction_markets[], news[], news_note, analysis, disclaimer.

Input Schema

TableJSON Schema

Name	Required	Description
`limit`	No
`query`	No	Prediction-market topic. Optional.
`language`	No	Optional answer language, BCP-47 (en, ja, pt-BR). Default: the input's.
`question`	No	Optional analysis question.
`product_id`	No	e.g. BTC-USD. Default BTC-USD.

Output Schema

TableJSON Schema

Name	Required	Description	Default
`result`	Yes
`status`	Yes
`worker`	Yes
`price_usd`	Yes
`provenance`	Yes
`receipt_id`	Yes
`attribution`	No
`receipt_url`	Yes
`billing_warning`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed24 schema fields changedOct 1, 2026

changedInput schema / properties / language / description

Previous value: -"Optional BCP-47 language tag (en, ja, pt-BR, zh-Hant): every prose field of the answer is written in this language. Default: the language of the material or question."New value: +"Optional answer language, BCP-47 (en, ja, pt-BR). Default: the input's."

removedOutput schema / description

Removed value: -"The 200 body of every paid /work call. `result` is the worker's own output (its schema is per route); everything else is the same on every /work route. A receipt for the job is at `receipt_url`."

removedOutput schema / properties / attribution / description

Removed value: -"Present only when the result's text was machine-translated: the credit to show with it."

removedOutput schema / properties / attribution / items / description
```
Removed value: -"A credit."
```

removedOutput schema / properties / attribution / items / properties

Removed value: -{
-  "text": {
-    "description": "Credit.",
-    "examples": [
-      "Translated by Google"
-    ],
-    "type": "string"
-  },
-  "url": {
-    "description": "Link.",
-    "examples": [
-      "https://translate.google.com"
-    ],
-    "type": "string"
-  }
-}

removedOutput schema / properties / attribution / items / required
```
Removed value: -[
-  "text",
-  "url"
-]
```
removedOutput schema / properties / attribution / items / type
```
Removed value: -"object"
```

removedOutput schema / properties / billing_warning / description

Removed value: -"Present only when the charge was recorded with a caveat."

removedOutput schema / properties / billing_warning / examples
```
Removed value: -[
-  "settlement pending"
-]
```
removedOutput schema / properties / price_usd / description
```
Removed value: -"What this call cost, in USD."
```
removedOutput schema / properties / price_usd / examples
```
Removed value: -[
-  0.02
-]
```

removedOutput schema / properties / provenance / description

Removed value: -"How the result was produced: which providers ran and how long each took."

removedOutput schema / properties / provenance / properties

Removed value: -{
-  "attempts": {
-    "description": "Provider attempts made, including retries and failovers.",
-    "examples": [
-      1
-    ],
-    "type": "integer"
-  },
-  "elapsed_ms": {
-    "description": "Wall-clock milliseconds for the whole job.",
-    "examples": [
-      340
-    ],
-    "type": "integer"
-  },
-  "providers_used": {
-    "description": "Providers that served the job.",
-    "examples": [
-      [
-        "coinbase-advanced-trade-public"
-      ]
-    ],
-    "items": {
-      "description": "Provider name.",
-      "examples": [
-        "coinbase-advanced-trade-public"
-      ],
-      "type": "string"
-    },
-    "type": "array"
-  },
-  "steps": {
-    "description": "Every step the job ran, in order.",
-    "items": {
-      "description": "One step of the job.",
-      "properties": {
-        "ms": {
-          "description": "Milliseconds the step took.",
-          "examples": [
-            312
-          ],
-          "type": "integer"
-        },
-        "ok": {
-          "description": "Whether the step succeeded.",
-          "examples": [
-            true
-          ],
-          "type": "boolean"
-        },
-        "provider": {
-          "description": "Provider that served the step.",
-          "examples": [
-            "coinbase-advanced-trade-public"
-          ],
-          "type": "string"
-        },
-        "reason": {
-          "description": "Failure reason, on a failed step.",
-          "examples": [
-            "provider_timeout"
-          ],
-          "type": "string"
-        },
-        "step": {
-          "description": "Step name inside the worker.",
-          "examples": [
-            "quote"
-          ],
-          "type": "string"
-        }
-      },
-      "required": [
-        "step",
-        "ok",
-        "ms"
-      ],
-      "type": "object"
-    },
-    "type": "array"
-  }
-}

removedOutput schema / properties / provenance / required

Removed value: -[
-  "steps",
-  "providers_used",
-  "attempts",
-  "elapsed_ms"
-]

removedOutput schema / properties / receipt_id / description
```
Removed value: -"Receipt id for this job."
```
removedOutput schema / properties / receipt_id / examples
```
Removed value: -[
-  "rcpt_9f1c2b3a4d5e6f70"
-]
```

removedOutput schema / properties / receipt_url / description

Removed value: -"Where to fetch the machine-readable receipt (free, no payment)."

removedOutput schema / properties / receipt_url / examples

Removed value: -[
-  "/work/receipts/rcpt_9f1c2b3a4d5e6f70"
-]

removedOutput schema / properties / result / properties

Removed value: -{
-  "analysis": {
-    "description": "What the two sources together do and do not support.",
-    "examples": [
-      "Spot is up 1.8% on the day while the top market prices a year-end close above $100k at 62%..."
-    ],
-    "type": "string"
-  },
-  "disclaimer": {
-    "description": "Not investment advice.",
-    "examples": [
-      "Market data and implied probabilities only. Not investment advice and not a forecast by HubVibe."
-    ],
-    "type": "string"
-  },
-  "model": {
-    "description": "The model that produced the answer.",
-    "examples": [
-      "gemini-2.5-flash"
-    ],
-    "type": "string"
-  },
-  "news": {
-    "description": "Recent headlines read for this call (GDELT, cite https://www.gdeltproject.org/), newest first; empty when none.",
-    "examples": [
-      []
-    ],
-    "items": {
-      "description": "One recent headline.",
-      "properties": {
-        "published_at": {
-          "description": "Publication time (UTC).",
-          "examples": [
-            "2026-09-27T09:00:00Z"
-          ],
-          "type": [
-            "string",
-            "null"
-          ]
-        },
-        "source_name": {
-          "description": "Publisher.",
-          "examples": [
-            "Reuters"
-          ],
-          "type": [
-            "string",
-            "null"
-          ]
-        },
-        "title": {
-          "description": "Headline.",
-          "examples": [
-            "Bitcoin steadies as ETF inflows resume"
-          ],
-          "type": "string"
-        },
-        "url": {
-          "description": "Article link.",
-          "examples": [
-            "https://www.reuters.com/markets/..."
-          ],
-          "type": "string"
-        }
-      },
-      "required": [
-        "title",
-        "url",
-        "source_name",
-        "published_at"
-      ],
-      "type": "object"
-    },
-    "type": "array"
-  },
-  "news_note": {
-    "description": "Why headlines are missing or partial; null when they were read cleanly.",
-    "examples": [
-      "Headlines unavailable for this call: gdelt:query: BigQuery did not finish within 60s"
-    ],
-    "type": [
-      "string",
-      "null"
-    ]
-  },
-  "prediction_markets": {
-    "description": "Matching prediction markets, highest volume first.",
-    "items": {
-      "description": "One prediction market.",
-      "properties": {
-        "active": {
-          "description": "Whether the market is active.",
-          "examples": [
-            true
-          ],
-          "type": "boolean"
-        },
-        "closed": {
-          "description": "Whether the market is closed.",
-          "examples": [
-            false
-          ],
-          "type": "boolean"
-        },
-        "end_date": {
-          "description": "ISO 8601 end date.",
-          "examples": [
-            "2026-12-31T00:00:00Z"
-          ],
-          "type": [
-            "string",
-            "null"
-          ]
-        },
-        "id": {
-          "description": "Polymarket market id.",
-          "examples": [
-            "512345"
-          ],
-          "type": "string"
-        },
-        "implied_probabilities": {
-          "description": "Each outcome with its implied probability.",
-          "examples": [
-            [
-              {
-                "outcome": "Yes",
-                "probability_pct": 62.5
-              },
-              {
-                "outcome": "No",
-                "probability_pct": 37.5
-              }
-            ]
-          ],
-          "items": {
-            "description": "One outcome and what the market prices it at.",
-            "properties": {
-              "outcome": {
-                "description": "Outcome label.",
-                "examples": [
-                  "Yes"
-                ],
-                "type": "string"
-              },
-              "probability_pct": {
-                "description": "Implied probability in percent.",
-                "examples": [
-                  62.5
-                ],
-                "type": [
-                  "number",
-                  "null"
-                ]
-              }
-            },
-            "required": [
-              "outcome"
-            ],
-            "type": "object"
-          },
-          "type": "array"
-        },
-        "liquidity": {
-          "description": "Liquidity in USD.",
-          "examples": [
-            240310.2
-          ],
-          "type": [
-            "number",
-            "null"
-          ]
-        },
-        "question": {
-          "description": "The market question.",
-          "examples": [
-            "Will BTC close above $100k on Dec 31?"
-          ],
-          "type": "string"
-        },
-        "slug": {
-          "description": "Polymarket slug.",
-          "examples": [
-            "will-btc-close-above-100k"
-          ],
-          "type": "string"
-        },
-        "volume": {
-          "description": "Traded volume in USD.",
-          "examples": [
-            1834520.5
-          ],
-          "type": [
-            "number",
-            "null"
-          ]
-        }
-      },
-      "required": [
-        "id",
-        "question",
-        "implied_probabilities"
-      ],
-      "type": "object"
-    },
-    "type": "array"
-  },
-  "product_id": {
-    "description": "Spot product read.",
-    "examples": [
-      "BTC-USD"
-    ],
-    "type": "string"
-  },
-  "spot": {
-    "description": "Live spot quote.",
-    "properties": {
-      "base_currency": {
-        "description": "Base currency code.",
-        "examples": [
-          "BTC"
-        ],
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "price": {
-        "description": "Last trade price, as the exchange reports it.",
-        "examples": [
-          "97231.45"
-        ],
-        "type": "string"
-      },
-      "price_change_24h_pct": {
-        "description": "24-hour percentage change.",
-        "examples": [
-          "1.82"
-        ],
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "product_id": {
-        "description": "Coinbase product, base-quote.",
-        "examples": [
-          "BTC-USD"
-        ],
-        "type": "string"
-      },
-      "quote_currency": {
-        "description": "Quote currency code.",
-        "examples": [
-          "USD"
-        ],
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "source": {
-        "const": "coinbase-advanced-trade-public",
-        "description": "Data source.",
-        "type": "string"
-      },
-      "status": {
-        "description": "Product status as reported by the exchange.",
-        "examples": [
-          "online"
-        ],
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "volume_24h": {
-        "description": "24-hour volume in the base currency.",
-        "examples": [
-          "14231.9"
-        ],
-        "type": [
-          "string",
-          "null"
-        ]
-      }
-    },
-    "required": [
-      "product_id",
-      "price",
-      "source"
-    ],
-    "type": "object"
-  }
-}

removedOutput schema / properties / result / required

Removed value: -[
-  "product_id",
-  "spot",
-  "prediction_markets",
-  "news",
-  "news_note",
-  "analysis",
-  "model",
-  "disclaimer"
-]

removedOutput schema / properties / status / description

Removed value: -"Present only on a delivered result."

removedOutput schema / properties / worker / description

Removed value: -"Catalog name of the worker that ran."

removedOutput schema / properties / worker / examples
```
Removed value: -[
-  "market.quote"
-]
```
removedOutput schema / title
```
Removed value: -"market.intel response"
```

Changed1 schema field changedSep 28, 2026

addedOutput schema / properties / attribution

Added value: +{
+  "description": "Present only when the result's text was machine-translated: the credit to show with it.",
+  "items": {
+    "description": "A credit.",
+    "properties": {
+      "text": {
+        "description": "Credit.",
+        "examples": [
+          "Translated by Google"
+        ],
+        "type": "string"
+      },
+      "url": {
+        "description": "Link.",
+        "examples": [
+          "https://translate.google.com"
+        ],
+        "type": "string"
+      }
+    },
+    "required": [
+      "text",
+      "url"
+    ],
+    "type": "object"
+  },
+  "type": "array"
+}

Changed3 schema fields changedSep 28, 2026

changedOutput schema / properties / result / properties / news / description

Previous value: -"Recent headlines read for this call (Google News), newest first; empty when none."New value: +"Recent headlines read for this call (GDELT, cite https://www.gdeltproject.org/), newest first; empty when none."

changedOutput schema / properties / result / properties / news / items / properties / url / examples

Previous value: -[
-  "https://news.google.com/rss/articles/CBMi..."
-]New value: +[
+  "https://www.reuters.com/markets/..."
+]

changedOutput schema / properties / result / properties / news_note / examples

Previous value: -[
-  "Headlines unavailable for this call: Google News (US:en) timed out"
-]New value: +[
+  "Headlines unavailable for this call: gdelt:query: BigQuery did not finish within 60s"
+]

Changed3 schema fields changedSep 27, 2026

addedOutput schema / properties / result / properties / news

Added value: +{
+  "description": "Recent headlines read for this call (Google News), newest first; empty when none.",
+  "examples": [
+    []
+  ],
+  "items": {
+    "description": "One recent headline.",
+    "properties": {
+      "published_at": {
+        "description": "Publication time (UTC).",
+        "examples": [
+          "2026-09-27T09:00:00Z"
+        ],
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "source_name": {
+        "description": "Publisher.",
+        "examples": [
+          "Reuters"
+        ],
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "title": {
+        "description": "Headline.",
+        "examples": [
+          "Bitcoin steadies as ETF inflows resume"
+        ],
+        "type": "string"
+      },
+      "url": {
+        "description": "Article link.",
+        "examples": [
+          "https://news.google.com/rss/articles/CBMi..."
+        ],
+        "type": "string"
+      }
+    },
+    "required": [
+      "title",
+      "url",
+      "source_name",
+      "published_at"
+    ],
+    "type": "object"
+  },
+  "type": "array"
+}

addedOutput schema / properties / result / properties / news_note

Added value: +{
+  "description": "Why headlines are missing or partial; null when they were read cleanly.",
+  "examples": [
+    "Headlines unavailable for this call: Google News (US:en) timed out"
+  ],
+  "type": [
+    "string",
+    "null"
+  ]
+}

changedOutput schema / properties / result / required

Previous value: -[
-  "product_id",
-  "spot",
-  "prediction_markets",
-  "analysis",
-  "model",
-  "disclaimer"
-]New value: +[
+  "product_id",
+  "spot",
+  "prediction_markets",
+  "news",
+  "news_note",
+  "analysis",
+  "model",
+  "disclaimer"
+]

Changed2 schema fields changedSep 27, 2026

addedInput schema / properties / language

Added value: +{
+  "description": "Optional BCP-47 language tag (en, ja, pt-BR, zh-Hant): every prose field of the answer is written in this language. Default: the language of the material or question.",
+  "maxLength": 35,
+  "pattern": "^[A-Za-z]{2,3}(-[A-Za-z0-9]{2,8})*$",
+  "type": "string"
+}

changedOutput schema / description

Previous value: -"The 200 body of every paid /work call. `result` is the worker's own output (its schema is per route); everything else is the same on all 38 routes. A receipt for the job is at `receipt_url`."New value: +"The 200 body of every paid /work call. `result` is the worker's own output (its schema is per route); everything else is the same on every /work route. A receipt for the job is at `receipt_url`."

AddedSep 24, 2026

TDQS

A4.2/5.0

Behavior4/5

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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, openWorld). The description adds genuinely useful context beyond them: a $5.00 per-call cost, a disclaimer/not-investment-advice framing, and the epistemic posture of the output ('says what the numbers do and do not support'). It does not disclose latency, rate limits, or error behavior, keeping it short of a 5.

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?

The payload is front-loaded: the composite capability comes first, then usage, then inputs, then the returns list. The 'Returns: spot{}, prediction_markets[], news[], news_note, analysis, disclaimer' tail is somewhat listy but earns its place as a quick output preview. Minor redundancy around the input list keeps it from a 5.

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

Completeness5/5

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

For a multi-source aggregation tool with an output schema, the description covers the sources, the synthesis behavior, cost, usage scope, and a returns preview. An agent can decide whether to call it and what to expect without opening the schema.

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 80%, so the schema already carries most parameter meaning. The description restates product_id, query, question and limit, and its BTC-USD example duplicates the schema's own 'e.g. BTC-USD' note. It omits the language parameter entirely, adding little beyond the structured data — baseline 3.

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

Purpose5/5

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

States a specific composite capability: live Coinbase spot price + Polymarket probabilities + GDELT news on the same subject, synthesized into a written analysis. This is clearly distinguishable from siblings like hubvibe_market_quote (quote only), hubvibe_market_prediction (prediction only) and hubvibe_news_search (news only) because it names the fusion explicitly.

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 for a quick read on Bitcoin, Ethereum or any coin' gives clear usage context, and the 'Market data only, not investment advice' line bounds the scope. It does not, however, name an alternative or state when a narrower sibling (e.g. hubvibe_market_quote or hubvibe_market_prediction) would be preferable, so the routing guidance is incomplete.

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

All HubVibe: Pay-per-Call Agent Tools: Web Search, Email Verify, KYC Screening, Stocks, Crypto, News tools Inspect

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