Prism MCP

buy_time

buy_time

Buys line time by the millisecond, $0.000001 each; buying again adds time. Returns your channelId, the time bought and the time left. Then open a line with the line tool. Time you do not burn comes back on refund. Not idempotent: each call buys more time. Paid. With no wallet code, pay with a pass (https://mcp.zeamprism.com/pass) or the Bridge: https://mcp.zeamprism.com/how-to-pay Example: {"ms":60000}

Input Schema

TableJSON Schema

Name	Required	Description	Default
`ms`	No	milliseconds of line time; default 250. Buying again adds time

Output Schema

TableJSON Schema

Name	Required	Description	Default
`paidUSD`	No
`boughtMs`	No
`channelId`	No
`msRemaining`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 6, 2026
- removedInput schema / properties / ms / maximum
```
Removed value: -9007199254740991
```

Changed4 schema fields changedOct 5, 2026

addedInput schema / additionalProperties
```
Added value: +{}
```

removedInput schema / properties / blocks

Removed value: -{
-  "description": "blocks of 250 ms; default 1",
-  "maximum": 14400,
-  "minimum": 1,
-  "type": "integer"
-}

addedInput schema / properties / ms

Added value: +{
+  "description": "milliseconds of line time; default 250. Buying again adds time",
+  "maximum": 9007199254740991,
+  "minimum": 1,
+  "type": "integer"
+}

removedOutput schema / properties / blockMs

Removed value: -{
-  "type": [
-    "number",
-    "null"
-  ]
-}

Changed18 schema fields changedOct 1, 2026

addedInput schema / properties / blocks

Added value: +{
+  "description": "blocks of 250 ms; default 1",
+  "maximum": 14400,
+  "minimum": 1,
+  "type": "integer"
+}

removedInput schema / properties / line

Removed value: -{
-  "description": "the credential from /pay, so this payment is applied to your line",
-  "type": "string"
-}

addedOutput schema / properties / blockMs

Added value: +{
+  "type": [
+    "number",
+    "null"
+  ]
+}

changedOutput schema / properties / boughtMs / anyOf

Previous value: -[
-  {
-    "description": "milliseconds this payment added to the balance",
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "description": "milliseconds this payment bought",
+    "type": "number"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / properties / buysMs

Removed value: -{
-  "anyOf": [
-    {
-      "description": "what the remaining collateral can still buy",
-      "type": "number"
-    },
-    {
-      "type": "null"
-    }
-  ]
-}

addedOutput schema / properties / channelId

Added value: +{
+  "type": [
+    "string",
+    "null"
+  ]
+}

removedOutput schema / properties / collateral

Removed value: -{
-  "anyOf": [
-    {
-      "description": "micro-USD still behind the channel",
-      "type": "number"
-    },
-    {
-      "type": "null"
-    }
-  ]
-}

removedOutput schema / properties / hint

Removed value: -{
-  "type": [
-    "string",
-    "null"
-  ]
-}

removedOutput schema / properties / line

Removed value: -{
-  "anyOf": [
-    {
-      "description": "the line this tick was applied to, null if none matched",
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    {
-      "type": "null"
-    }
-  ]
-}

removedOutput schema / properties / metering

Removed value: -{
-  "type": [
-    "boolean",
-    "null"
-  ]
-}

changedOutput schema / properties / msRemaining / anyOf

Previous value: -[
-  {
-    "description": "balance after this tick; absent when no line matched",
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "description": "time on the channel after this payment",
+    "type": "number"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / properties / open

Removed value: -{
-  "type": [
-    "boolean",
-    "null"
-  ]
-}

removedOutput schema / properties / paid

Removed value: -{
-  "type": [
-    "boolean",
-    "null"
-  ]
-}

removedOutput schema / properties / paidMicroUSD

Removed value: -{
-  "type": [
-    "number",
-    "null"
-  ]
-}

addedOutput schema / properties / paidUSD

Added value: +{
+  "type": [
+    "string",
+    "null"
+  ]
+}

removedOutput schema / properties / settledBeforeMicroUSD

Removed value: -{
-  "anyOf": [
-    {
-      "description": "what we had settled against this channel before this call; only when no line matched",
-      "type": [
-        "number",
-        "null"
-      ]
-    },
-    {
-      "type": "null"
-    }
-  ]
-}

removedOutput schema / properties / thisCallMicroUSD

Removed value: -{
-  "anyOf": [
-    {
-      "description": "what this call is charged: the row it paid",
-      "type": [
-        "number",
-        "null"
-      ]
-    },
-    {
-      "type": "null"
-    }
-  ]
-}

removedOutput schema / properties / tick

Removed value: -{
-  "type": [
-    "boolean",
-    "null"
-  ]
-}

Changed3 schema fields changedSep 18, 2026

removedOutput schema / properties / cumulativeMicroUSD

Removed value: -{
-  "anyOf": [
-    {
-      "description": "charged to date; only when no line matched",
-      "type": [
-        "number",
-        "null"
-      ]
-    },
-    {
-      "type": "null"
-    }
-  ]
-}

addedOutput schema / properties / settledBeforeMicroUSD

Added value: +{
+  "anyOf": [
+    {
+      "description": "what we had settled against this channel before this call; only when no line matched",
+      "type": [
+        "number",
+        "null"
+      ]
+    },
+    {
+      "type": "null"
+    }
+  ]
+}

addedOutput schema / properties / thisCallMicroUSD

Added value: +{
+  "anyOf": [
+    {
+      "description": "what this call is charged: the row it paid",
+      "type": [
+        "number",
+        "null"
+      ]
+    },
+    {
+      "type": "null"
+    }
+  ]
+}

AddedSep 18, 2026

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