pulse-verity

Get Pulse Verity Index Price

get_index_price

Read-only

Fetches a current signed crypto index price for a requested symbol, returning verifiable price data and metadata for offline signature checks.

Instructions

Get a current signed crypto index price from /api/index/v1/price. Returns symbol, price, optional priceText, at, grade, signature, kid and sig. Preserve priceText exactly for verify_print. Optional tier, confidence, dispersionBps, interval, sources, engine and cadence describe the observation. Pass the whole print including v2 to verify_print; require recordValid=true before trusting quality fields. Coverage changes: use list_index_assets to discover assets. A stale or unavailable response means no current price, never zero. Without a developer key, only limited daily BTC, ETH and SOL samples are served.

Input Schema

Name	Required	Description	Default
`symbol`	Yes	Crypto ticker symbol, e.g. BTC, ETH, SOL

Output Schema

Name	Required	Description
`at`	No
`v2`	No
`kid`	No
`sig`	No
`note`	No
`tier`	No
`error`	No
`grade`	No
`price`	No
`engine`	No
`getKey`	No
`sample`	No
`symbol`	No
`cadence`	No
`sources`	No
`success`	No
`interval`	No
`priceText`	No
`requestId`	Yes	Identifier for this MCP call; not a signed price field.
`signature`	No
`confidence`	No
`dispersionBps`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed3 schema fields changedv1.3.6Oct 22, 2026

addedOutput schema / properties / error / properties / batchLimit

Added value: +{
+  "maximum": 100000,
+  "minimum": 1,
+  "type": "integer"
+}

addedOutput schema / properties / error / properties / plan

Added value: +{
+  "enum": [
+    "Developer",
+    "Basic",
+    "Builder",
+    "Commercial",
+    "Enterprise"
+  ],
+  "type": "string"
+}

addedOutput schema / properties / error / properties / requested

Added value: +{
+  "maximum": 100000,
+  "minimum": 1,
+  "type": "integer"
+}

Changed6 schema fields changedv1.3.3Oct 18, 2026

addedOutput schema / properties / error / properties / capacityAction

Added value: +{
+  "enum": [
+    "review_plans",
+    "contact_support"
+  ],
+  "type": "string"
+}

addedOutput schema / properties / error / properties / getKeyUrl

Added value: +{
+  "maxLength": 256,
+  "pattern": "^https:\\/\\/thepulse\\.markets\\/developers(?:[/?#][^\\s]*)?$",
+  "type": "string"
+}

addedOutput schema / properties / error / properties / hostedServerUrl

Added value: +{
+  "const": "https://mcp.thepulse.markets/api/index/mcp",
+  "type": "string"
+}

changedOutput schema / properties / error / properties / nextAction / enum

Previous value: -[
-  "wait",
-  "review_access",
-  "check_limits",
-  "reconnect",
-  "check_input",
-  "choose_another_symbol",
-  "report_issue"
-]New value: +[
+  "wait",
+  "review_access",
+  "check_limits",
+  "reconnect",
+  "check_input",
+  "choose_another_symbol",
+  "report_issue",
+  "get_key"
+]

addedOutput schema / properties / error / properties / resetAt

Added value: +{
+  "pattern": "^\\d{4}-(0[1-9]|1[0-2])-(0[1-9]|[12]\\d|3[01])T([01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d\\.\\d{3}Z$",
+  "type": "string"
+}

addedOutput schema / properties / error / properties / upgradeUrl

Added value: +{
+  "const": "https://thepulse.markets/developers#/portal/pricing",
+  "type": "string"
+}

Changed1 schema field changedv1.3.0Sep 30, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "additionalProperties": false,
+  "properties": {
+    "at": {
+      "maxLength": 40,
+      "type": "string"
+    },
+    "cadence": {
+      "anyOf": [
+        {
+          "additionalProperties": false,
+          "properties": {
+            "band": {
+              "enum": [
+                "real-time",
+                "five-second",
+                "ten-second",
+                "slow",
+                "unavailable"
+              ],
+              "type": "string"
+            },
+            "calculatedAgeMs": {
+              "anyOf": [
+                {
+                  "$ref": "#/properties/confidence/anyOf/0"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "newestSourceAgeMs": {
+              "anyOf": [
+                {
+                  "$ref": "#/properties/confidence/anyOf/0"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "oldestSourceAgeMs": {
+              "anyOf": [
+                {
+                  "$ref": "#/properties/confidence/anyOf/0"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "p50UpdateMs": {
+              "anyOf": [
+                {
+                  "$ref": "#/properties/confidence/anyOf/0"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "p95UpdateMs": {
+              "anyOf": [
+                {
+                  "$ref": "#/properties/confidence/anyOf/0"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "updatesLast120s": {
+              "$ref": "#/properties/sources/anyOf/0"
+            }
+          },
+          "required": [
+            "band",
+            "calculatedAgeMs",
+            "newestSourceAgeMs",
+            "oldestSourceAgeMs",
+            "p50UpdateMs",
+            "p95UpdateMs"
+          ],
+          "type": "object"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "confidence": {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "dispersionBps": {
+      "anyOf": [
+        {
+          "$ref": "#/properties/confidence/anyOf/0"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "engine": {
+      "anyOf": [
+        {
+          "maxLength": 64,
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "error": {
+      "additionalProperties": false,
+      "properties": {
+        "accountUrl": {
+          "const": "https://thepulse.markets/developers/access",
+          "type": "string"
+        },
+        "code": {
+          "pattern": "^[A-Z][A-Z0-9_]{0,79}$",
+          "type": "string"
+        },
+        "nextAction": {
+          "enum": [
+            "wait",
+            "review_access",
+            "check_limits",
+            "reconnect",
+            "check_input",
+            "choose_another_symbol",
+            "report_issue"
+          ],
+          "type": "string"
+        },
+        "retryAfterSeconds": {
+          "maximum": 86400,
+          "minimum": 1,
+          "type": "integer"
+        },
+        "retryable": {
+          "type": "boolean"
+        }
+      },
+      "required": [
+        "code",
+        "nextAction"
+      ],
+      "type": "object"
+    },
+    "getKey": {
+      "maxLength": 256,
+      "type": "string"
+    },
+    "grade": {
+      "enum": [
+        "consensus",
+        "blended",
+        "indicative",
+        "composite",
+        "single-source"
+      ],
+      "type": "string"
+    },
+    "interval": {
+      "anyOf": [
+        {
+          "additionalProperties": false,
+          "properties": {
+            "lower": {
+              "anyOf": [
+                {
+                  "$ref": "#/properties/confidence/anyOf/0"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "upper": {
+              "anyOf": [
+                {
+                  "$ref": "#/properties/confidence/anyOf/0"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            }
+          },
+          "required": [
+            "lower",
+            "upper"
+          ],
+          "type": "object"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "kid": {
+      "pattern": "^[A-Za-z0-9._:-]{1,64}$",
+      "type": "string"
+    },
+    "note": {
+      "maxLength": 2048,
+      "type": "string"
+    },
+    "price": {
+      "exclusiveMinimum": 0,
+      "type": "number"
+    },
+    "priceText": {
+      "maxLength": 100,
+      "minLength": 1,
+      "type": "string"
+    },
+    "requestId": {
+      "description": "Identifier for this MCP call; not a signed price field.",
+      "format": "uuid",
+      "type": "string"
+    },
+    "sample": {
+      "const": true,
+      "type": "boolean"
+    },
+    "sig": {
+      "const": "pulse-index-v1",
+      "type": "string"
+    },
+    "signature": {
+      "maxLength": 88,
+      "minLength": 88,
+      "pattern": "^[A-Za-z0-9+/]{86}==$",
+      "type": "string"
+    },
+    "sources": {
+      "anyOf": [
+        {
+          "minimum": 0,
+          "type": "integer"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "success": {
+      "const": true,
+      "type": "boolean"
+    },
+    "symbol": {
+      "pattern": "^[A-Za-z0-9]{1,20}$",
+      "type": "string"
+    },
+    "tier": {
+      "anyOf": [
+        {
+          "maxLength": 20,
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "v2": {
+      "additionalProperties": false,
+      "properties": {
+        "canonical": {
+          "maxLength": 8192,
+          "minLength": 1,
+          "type": "string"
+        },
+        "kid": {
+          "$ref": "#/properties/kid"
+        },
+        "sig": {
+          "const": "pulse-index-v2",
+          "type": "string"
+        },
+        "signature": {
+          "$ref": "#/properties/signature"
+        }
+      },
+      "required": [
+        "sig",
+        "canonical",
+        "signature",
+        "kid"
+      ],
+      "type": "object"
+    }
+  },
+  "required": [
+    "requestId"
+  ],
+  "type": "object"
+}

First observedv1.1.0Sep 9, 2026

TDQS

A4.3/5.0

Behavior5/5

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

Adds substantial behavior beyond the readOnly/openWorld annotations: without a developer key only limited daily BTC/ETH/SOL samples are served, a stale or unavailable response means no price rather than zero, and recordValid must be true before trusting quality fields. These are exactly the operational constraints an agent needs.

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 purpose and endpoint, then layered with verification workflow, coverage routing, and auth limits. Dense and mostly waste-free, though the run-on enumeration of optional observation fields reduces scanability.

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?

Covers auth throttling, stale-response semantics, and the verify_print handoff, and an output schema exists so return values need not be restated. The unclear status of the enumerated optional fields is the main remaining gap.

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 single symbol parameter is fully documented in the schema, so the baseline is 3. The sentence listing 'optional tier, confidence, dispersionBps, interval, sources, engine and cadence' is ambiguous: since the schema sets additionalProperties=false with only symbol, an agent could misread these as passable inputs rather than observed response fields.

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?

Opens with a specific verb+resource (get a signed crypto index price) and names the endpoint path. It is clearly distinguishable from siblings such as list_index_assets and get_index_batch because it is the single-asset price fetch.

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?

Gives explicit routing: use list_index_assets to discover assets when coverage changes, and pass the print to verify_print. It does not state when to prefer get_index_batch over this tool, so the singular-vs-batch choice is left implicit.

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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