Agent Decision & Evidence Tools (MCP + x402)

Fresh market indicators

market_data

Read-only

Return one computed market_brief, Base gas or yield indicator with source coverage, freshness, a stable repeat URL and a do-not-repurchase-before time. Soft commodities use soft_commodity_stress.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`product`	No		market_brief

Output Schema

TableJSON Schema

Name	Required	Description
`data`	No
`tool`	No
`error`	No
`trade`	No
`signal`	No
`charged`	No	When present on an error, false means the failed result is uncharged.
`message`	No
`missing`	No
`product`	No
`receipt`	No
`settled`	No	When present on an error, false means no settlement occurred.
`sources`	No
`unknown`	No
`accepted`	No
`coverage`	No
`freshness`	No
`retryable`	No
`automation`	No
`disclaimer`	No
`error_code`	No
`extensions`	No
`status_code`	No
`did_you_mean`	No
`generated_at`	No
`missing_checks`	No
`partial_evidence`	No
`related_resources`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed4 schema fields changedSep 6, 2026

addedInput schema / additionalProperties
```
Added value: +false
```
removedInput schema / properties / product / title
```
Removed value: -"Product"
```

removedInput schema / title

Removed value: -"market_data_toolArguments"

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "anyOf": [
+    {
+      "required": [
+        "product",
+        "signal",
+        "sources",
+        "data",
+        "coverage",
+        "freshness",
+        "trade",
+        "generated_at",
+        "disclaimer",
+        "automation",
+        "related_resources",
+        "receipt",
+        "extensions"
+      ]
+    },
+    {
+      "required": [
+        "error"
+      ]
+    }
+  ],
+  "description": "Structured result contract for market_data. A success satisfies the documented success branch. A domain or tool error includes error and is not a successful settlement; unpaid x402 requirements are carried by the transport wrapper.",
+  "properties": {
+    "accepted": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "automation": {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    "charged": {
+      "description": "When present on an error, false means the failed result is uncharged.",
+      "type": "boolean"
+    },
+    "coverage": {
+      "type": "string"
+    },
+    "data": {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    "did_you_mean": {
+      "additionalProperties": true,
+      "type": [
+        "object",
+        "null"
+      ]
+    },
+    "disclaimer": {
+      "type": "string"
+    },
+    "error": {
+      "oneOf": [
+        {
+          "type": "string"
+        },
+        {
+          "additionalProperties": true,
+          "properties": {
+            "code": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "message": {
+              "type": "string"
+            },
+            "param": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "type": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "message"
+          ],
+          "type": "object"
+        }
+      ]
+    },
+    "error_code": {
+      "type": "string"
+    },
+    "extensions": {
+      "additionalProperties": true,
+      "properties": {
+        "delivery-receipt": {
+          "additionalProperties": true,
+          "properties": {
+            "how_to_verify": {
+              "type": "string"
+            },
+            "issued_at": {
+              "format": "date-time",
+              "type": "string"
+            },
+            "issuer": {
+              "type": "string"
+            },
+            "issuer_key": {
+              "type": "string"
+            },
+            "key_id": {
+              "type": "string"
+            },
+            "result_hash": {
+              "type": "string"
+            },
+            "service": {
+              "type": "string"
+            },
+            "signature": {
+              "type": "string"
+            },
+            "signed_message": {
+              "type": "string"
+            },
+            "standard": {
+              "const": "eucompliance-receipt/2",
+              "type": "string"
+            },
+            "subject": {
+              "type": "string"
+            },
+            "valid_until": {
+              "format": "date-time",
+              "type": "string"
+            },
+            "verify_url": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "standard",
+            "service",
+            "subject",
+            "result_hash",
+            "issued_at",
+            "valid_until",
+            "issuer",
+            "issuer_key",
+            "key_id",
+            "verify_url",
+            "how_to_verify",
+            "signature",
+            "signed_message"
+          ],
+          "type": "object"
+        }
+      },
+      "required": [
+        "delivery-receipt"
+      ],
+      "type": "object"
+    },
+    "freshness": {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    "generated_at": {
+      "type": "string"
+    },
+    "message": {
+      "type": "string"
+    },
+    "missing": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "missing_checks": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "partial_evidence": {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    "product": {
+      "enum": [
+        "market_brief",
+        "yield",
+        "gas"
+      ],
+      "type": "string"
+    },
+    "receipt": {
+      "additionalProperties": true,
+      "properties": {
+        "how_to_verify": {
+          "type": "string"
+        },
+        "issued_at": {
+          "format": "date-time",
+          "type": "string"
+        },
+        "issuer": {
+          "type": "string"
+        },
+        "issuer_key": {
+          "type": "string"
+        },
+        "key_id": {
+          "type": "string"
+        },
+        "result_hash": {
+          "type": "string"
+        },
+        "service": {
+          "type": "string"
+        },
+        "signature": {
+          "type": "string"
+        },
+        "signed_message": {
+          "type": "string"
+        },
+        "standard": {
+          "const": "eucompliance-receipt/2",
+          "type": "string"
+        },
+        "subject": {
+          "type": "string"
+        },
+        "valid_until": {
+          "format": "date-time",
+          "type": "string"
+        },
+        "verify_url": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "standard",
+        "service",
+        "subject",
+        "result_hash",
+        "issued_at",
+        "valid_until",
+        "issuer",
+        "issuer_key",
+        "key_id",
+        "verify_url",
+        "how_to_verify",
+        "signature",
+        "signed_message"
+      ],
+      "type": "object"
+    },
+    "related_resources": {
+      "items": {},
+      "type": "array"
+    },
+    "retryable": {
+      "type": "boolean"
+    },
+    "settled": {
+      "description": "When present on an error, false means no settlement occurred.",
+      "type": "boolean"
+    },
+    "signal": {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    "sources": {
+      "items": {},
+      "type": "array"
+    },
+    "status_code": {
+      "type": "integer"
+    },
+    "tool": {
+      "type": "string"
+    },
+    "trade": {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    "unknown": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    }
+  },
+  "type": "object"
+}

Changed1 schema field changedSep 6, 2026
- addedInput schema / properties / product / enum
```
Added value: +[
+  "market_brief",
+  "yield",
+  "gas"
+]
```
AddedAug 3, 2026

TDQS

A3.7/5.0

Behavior4/5

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

Annotations already cover readOnlyHint, openWorldHint, idempotentHint, and destructiveHint, so the description only needs to add context beyond those. It adds useful behavioral detail: results are computed, carry source coverage and freshness, provide a stable repeat URL, and include a do-not-repurchase-before time, which clarifies the non-idempotent cache/repurchase semantics. No contradiction with 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?

Two sentences with no filler and the main action is front-loaded. The 'Base gas' phrase creates a slight parse ambiguity, and the long tail of output attributes makes the first sentence dense, so it is not quite a perfect 5.

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?

With only one optional enum parameter and an output schema available, the description is mostly sufficient for invocation. It covers the key exception (soft commodities) and the unusual repurchase/caching behavior. The main completeness gap is the absence of routing guidance among similarly named market tools, but this is a selection issue more than an invocation issue.

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?

The schema provides only an enum for `product` with no descriptions (0% coverage), so the description must compensate. It names all three values (market_brief, gas, yield) and adds 'Base' as context for the gas choice, but it does not explicitly mention the parameter name, default behavior, or what each indicator contains. This is partial compensation, not complete.

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 concrete action ('Return') and names the exact resource types ('market_brief', 'gas', 'yield') that correspond to the product enum. The sentence also routes soft-commodity requests away to soft_commodity_stress, which helps differentiate from one key sibling. However, 'Base gas' is ambiguous and the description does not distinguish market_data from other market siblings such as spot_price, gas_estimate, or market_history.

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?

The only explicit usage rule is the final sentence: soft commodities should use soft_commodity_stress. The first sentence implies the tool is for computed fresh indicators, but it never states when to prefer market_data over spot_price, gas_estimate, market_history, or perp_market_data. This leaves selection among the many market-related siblings to inference.

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

All Agent Decision & Evidence Tools (MCP + x402) tools Inspect

Try in Browser

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Glama MCP Gateway

Add one secure layer between your agents and this server.