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

Crypto spot quote

hubvibe_market_quote

Read-onlyIdempotent

Crypto price / live coin quote: spot price, 24-hour change and 24-hour volume for Bitcoin, Ethereum, Solana or any Coinbase product (BTC-USD, ETH-USD, SOL-USD...), read at call time from Coinbase's public market data. Use it when an agent needs a current cryptocurrency price. Input: product_id such as BTC-USD. Bid/ask: market.ticker. Whole rate table: market.rates. $0.02 per call. Returns: price, price_change_24h_pct, volume_24h, base/quote currency.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`language`	No	Optional BCP-47 language tag (en, ja, ko, pt-BR): the human-readable strings of the result (notes, details, reasons) are translated into this language; data, codes, numbers and URLs are untouched. Default: as produced.
`product_id`	Yes	e.g. 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

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 / description
```
Removed value: -"Live spot quote."
```

removedOutput schema / properties / result / properties

Removed value: -{
-  "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"
-    ]
-  }
-}

removedOutput schema / properties / result / required

Removed value: -[
-  "product_id",
-  "price",
-  "source"
-]

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.quote 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"
+}

Changed1 schema field changedSep 27, 2026

addedInput schema / properties / language

Added value: +{
+  "description": "Optional BCP-47 language tag (en, ja, ko, pt-BR): the human-readable strings of the result (notes, details, reasons) are translated into this language; data, codes, numbers and URLs are untouched. Default: as produced.",
+  "maxLength": 35,
+  "pattern": "^[A-Za-z]{2,3}(-[A-Za-z0-9]{2,8})*$",
+  "type": "string"
+}

Changed1 schema field changedSep 27, 2026

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

A4.4/5.0

Behavior4/5

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

Annotations already declare readOnly, idempotent, openWorld and non-destructive, so the safety profile is covered. The description usefully adds context beyond them: the $0.02 per-call cost and that data is read at call time from Coinbase's public market source. It stops short of describing latency or rate limits, but the cost and source disclosures are genuinely additive.

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 the core purpose and the routing cues come early; every clause carries information (coverage, source, cost, return fields). It is dense and multi-clause with semicolons, bordering on cramped, but there is no filler to cut.

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?

An output schema exists, and the description still summarizes the returned fields. Combined with the source, cost, and sibling-routing guidance, an agent has everything needed to call this correctly and to choose it over market.ticker/market.rates.

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%, so the schema already documents product_id and language. The description supplies example tickers (BTC-USD, ETH-USD, SOL-USD) which largely restate the schema's own 'e.g. BTC-USD' hint, and it says nothing about the language parameter. Baseline 3 for a fully documented schema.

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 verb (read a live quote) and resource (Coinbase spot price), then enumerates exactly what is returned: spot price, 24h change, 24h volume. It also names the product-id format (BTC-USD) and explicitly routes away from siblings by noting bid/ask belongs to market.ticker and the full table to market.rates.

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

Usage Guidelines5/5

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

"Use it when an agent needs a current cryptocurrency price" gives the use condition, and the description explicitly names two alternatives (market.ticker for bid/ask, market.rates for the whole rate table), so the agent knows both when to pick this tool and which sibling to pick instead.

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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