Zambo

Day Pass status

day_pass_status

Read-onlyIdempotent

Check your current pass, also available as pass_status. All arguments are optional: current session, token_or_link, thread_id, or _zambo_key. Returns a plain status line, active, tier, expires_at, seconds_left and a private unlock link without spending quota. Product/provider limits may still apply. AER-1 receipt, verifiable offline.

Input Schema

Name	Required	Description	Default
`_ref`	No	Optional handover referral ID from your install link.
`thread_id`	No	Optional continuity thread within the current session.
`_zambo_key`	No	Optional opaque Zambo access capability. Never place it in a URL or public log.
`session_id`	No	Alias for _session_id.
`_session_id`	No	Optional stable bot-job ID. Reuse it across calls to bind a Day Pass and keep the job ledger together.
`status_token`	No	Opaque token returned with the human checkout link; it is not the Day Pass key.
`_caller_label`	No	Optional caller label recorded as a caller-reported claim in the receipt.	zambo-starter
`token_or_link`	No	Optional private /u/ unlock link.
`_caller_handle`	No	Opaque anonymous continuity handle returned during initialize. Reuse it across MCP sessions; it is not payment authorization.
`_continuity_ai_label`	No	Optional self-reported AI client label for the private continuity timeline. Zambo does not independently verify the client.

Output Schema

Name	Required	Description
`ok`	Yes
`ids`	Yes
`next`	Yes
`tier`	No
`urls`	Yes
`error`	No
`graph`	No
`active`	No
`result`	Yes	The tool's observed JSON value or plain-text result.
`intents`	No
`next_up`	No
`payment`	No
`day_pass`	No
`today_url`	No
`expires_at`	No
`human_line`	Yes
`next_steps`	No
`daily_recap`	No
`renew_nudge`	No
`unlock_link`	No
`seconds_left`	No
`resume_status`	No
`resumed_result`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedNov 5, 2026
- changedOutput schema / properties / human_line / maxLength
```
Previous value: -200New value: +512
```

Changed2 schema fields changedOct 25, 2026

addedInput schema / properties / _caller_handle

Added value: +{
+  "description": "Opaque anonymous continuity handle returned during initialize. Reuse it across MCP sessions; it is not payment authorization.",
+  "maxLength": 64,
+  "type": "string"
+}

addedInput schema / properties / _caller_label / default
```
Added value: +"zambo-starter"
```

Changed1 schema field changedOct 23, 2026
- changedOutput schema / properties / graph / properties / aer / const
```
Previous value: -"draft-zambo-aer1-25"New value: +"draft-zambo-aer1-26"
```
Changed1 schema field changedOct 22, 2026
- changedOutput schema / properties / graph / properties / aer / const
```
Previous value: -"draft-zambo-aer1-24"New value: +"draft-zambo-aer1-25"
```
Changed1 schema field changedOct 20, 2026
- changedOutput schema / properties / graph / properties / aer / const
```
Previous value: -"draft-zambo-aer1-23"New value: +"draft-zambo-aer1-24"
```
Changed1 schema field changedOct 19, 2026
- changedOutput schema / properties / graph / properties / aer / const
```
Previous value: -"draft-zambo-aer1-22"New value: +"draft-zambo-aer1-23"
```
Changed1 schema field changedOct 18, 2026
- changedOutput schema / properties / graph / properties / aer / const
```
Previous value: -"draft-zambo-aer1-21"New value: +"draft-zambo-aer1-22"
```
Changed1 schema field changedOct 18, 2026
- changedOutput schema / properties / graph / properties / aer / const
```
Previous value: -"draft-zambo-aer1-20"New value: +"draft-zambo-aer1-21"
```
Changed1 schema field changedOct 17, 2026
- addedOutput schema / properties / next_steps
```
Added value: +{
+  "items": {},
+  "minItems": 1,
+  "type": "array"
+}
```

Changed29 schema fields changedOct 17, 2026

addedInput schema / properties / _ref

Added value: +{
+  "description": "Optional handover referral ID from your install link.",
+  "format": "uuid",
+  "type": "string"
+}

changedOutput schema / additionalProperties
```
Previous value: -falseNew value: +true
```
addedOutput schema / properties / active
```
Added value: +{
+  "type": "boolean"
+}
```
addedOutput schema / properties / daily_recap
```
Added value: +{
+  "type": "object"
+}
```
addedOutput schema / properties / day_pass
```
Added value: +{
+  "type": "object"
+}
```

addedOutput schema / properties / error

Added value: +{
+  "additionalProperties": true,
+  "anyOf": [
+    {
+      "required": [
+        "next_call"
+      ]
+    },
+    {
+      "required": [
+        "next_url"
+      ]
+    }
+  ],
+  "properties": {
+    "code": {
+      "type": "string"
+    },
+    "next_call": {
+      "additionalProperties": false,
+      "properties": {
+        "args": {
+          "type": "object"
+        },
+        "tool": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "tool",
+        "args"
+      ],
+      "type": "object"
+    },
+    "next_step": {
+      "type": "string"
+    },
+    "next_url": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "code",
+    "next_step"
+  ],
+  "type": "object"
+}

addedOutput schema / properties / expires_at

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

addedOutput schema / properties / graph

Added value: +{
+  "properties": {
+    "aer": {
+      "const": "draft-zambo-aer1-20"
+    },
+    "schema": {
+      "const": "zambo.graph/1"
+    }
+  },
+  "required": [
+    "schema",
+    "aer",
+    "nodes",
+    "edges",
+    "retries",
+    "sources",
+    "summary"
+  ],
+  "type": "object"
+}

addedOutput schema / properties / human_line

Added value: +{
+  "maxLength": 200,
+  "pattern": "^[^\\r\\n]*$",
+  "type": "string"
+}

addedOutput schema / properties / ids

Added value: +{
+  "additionalProperties": {
+    "type": "string"
+  },
+  "type": "object"
+}

addedOutput schema / properties / intents

Added value: +{
+  "items": {
+    "type": "object"
+  },
+  "type": "array"
+}

addedOutput schema / properties / next

Added value: +{
+  "minLength": 1,
+  "type": "string"
+}

addedOutput schema / properties / next_up
```
Added value: +{
+  "type": "string"
+}
```
addedOutput schema / properties / ok
```
Added value: +{
+  "type": "boolean"
+}
```
addedOutput schema / properties / payment
```
Added value: +{
+  "type": "object"
+}
```
addedOutput schema / properties / renew_nudge
```
Added value: +{
+  "type": "object"
+}
```
removedOutput schema / properties / result / additionalProperties
```
Removed value: -true
```

addedOutput schema / properties / result / description

Added value: +"The tool's observed JSON value or plain-text result."

removedOutput schema / properties / result / properties

Removed value: -{
-  "active": {
-    "type": "boolean"
-  },
-  "calls_left": {
-    "oneOf": [
-      {
-        "minimum": 0,
-        "type": "integer"
-      },
-      {
-        "type": "string"
-      }
-    ]
-  },
-  "calls_left_scope": {
-    "type": "string"
-  },
-  "expires_at": {
-    "type": [
-      "string",
-      "null"
-    ]
-  },
-  "seals": {
-    "items": {
-      "additionalProperties": false,
-      "properties": {
-        "sealed_at": {
-          "type": "string"
-        },
-        "workflow_id": {
-          "type": "string"
-        },
-        "workflow_url": {
-          "type": "string"
-        }
-      },
-      "required": [
-        "workflow_id",
-        "workflow_url",
-        "sealed_at"
-      ],
-      "type": "object"
-    },
-    "type": "array"
-  },
-  "session_bound": {
-    "type": "boolean"
-  },
-  "status": {
-    "type": "string"
-  }
-}

removedOutput schema / properties / result / required

Removed value: -[
-  "status",
-  "active",
-  "expires_at",
-  "calls_left",
-  "seals"
-]

removedOutput schema / properties / result / type
```
Removed value: -"object"
```
addedOutput schema / properties / resume_status
```
Added value: +{
+  "type": "string"
+}
```
addedOutput schema / properties / resumed_result
```
Added value: +{
+  "type": "object"
+}
```

addedOutput schema / properties / seconds_left

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

addedOutput schema / properties / tier

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

addedOutput schema / properties / today_url
```
Added value: +{
+  "type": "string"
+}
```

addedOutput schema / properties / unlock_link

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

addedOutput schema / properties / urls

Added value: +{
+  "additionalProperties": {
+    "type": "string"
+  },
+  "type": "object"
+}

changedOutput schema / required

Previous value: -[
-  "result"
-]New value: +[
+  "result",
+  "ok",
+  "human_line",
+  "next",
+  "ids",
+  "urls"
+]

Changed2 schema fields changedOct 16, 2026

addedInput schema / properties / thread_id

Added value: +{
+  "description": "Optional continuity thread within the current session.",
+  "type": "string"
+}

addedInput schema / properties / token_or_link

Added value: +{
+  "description": "Optional private /u/ unlock link.",
+  "type": "string"
+}

Changed5 schema fields changedOct 14, 2026

addedOutput schema / properties / result / additionalProperties
```
Added value: +true
```

removedOutput schema / properties / result / description

Removed value: -"The tool's observed JSON value or plain-text result."

addedOutput schema / properties / result / properties

Added value: +{
+  "active": {
+    "type": "boolean"
+  },
+  "calls_left": {
+    "oneOf": [
+      {
+        "minimum": 0,
+        "type": "integer"
+      },
+      {
+        "type": "string"
+      }
+    ]
+  },
+  "calls_left_scope": {
+    "type": "string"
+  },
+  "expires_at": {
+    "type": [
+      "string",
+      "null"
+    ]
+  },
+  "seals": {
+    "items": {
+      "additionalProperties": false,
+      "properties": {
+        "sealed_at": {
+          "type": "string"
+        },
+        "workflow_id": {
+          "type": "string"
+        },
+        "workflow_url": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "workflow_id",
+        "workflow_url",
+        "sealed_at"
+      ],
+      "type": "object"
+    },
+    "type": "array"
+  },
+  "session_bound": {
+    "type": "boolean"
+  },
+  "status": {
+    "type": "string"
+  }
+}

addedOutput schema / properties / result / required

Added value: +[
+  "status",
+  "active",
+  "expires_at",
+  "calls_left",
+  "seals"
+]

addedOutput schema / properties / result / type
```
Added value: +"object"
```

Changed4 schema fields changedOct 10, 2026

changedInput schema / properties / _caller_label / description

Previous value: -"Optional self-reported caller label. It is recorded as a claim, not independently verified."New value: +"Optional caller label recorded as a caller-reported claim in the receipt."

changedInput schema / properties / _session_id / description

Previous value: -"Optional stable Zambo session ID used to preserve continuity across tool calls."New value: +"Optional stable bot-job ID. Reuse it across calls to bind a Day Pass and keep the job ledger together."

changedInput schema / properties / _zambo_key / description

Previous value: -"Optional Day Pass capability key. Never include it in a URL or public log."New value: +"Optional opaque Zambo access capability. Never place it in a URL or public log."

addedInput schema / properties / _zambo_key / maxLength
```
Added value: +160
```

Changed9 schema fields changedOct 10, 2026

changedOutput schema / additionalProperties
```
Previous value: -trueNew value: +false
```

removedOutput schema / properties / active

Removed value: -{
-  "type": "boolean"
-}

removedOutput schema / properties / calls_left

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

removedOutput schema / properties / calls_left_scope
```
Removed value: -{
-  "type": "string"
-}
```

removedOutput schema / properties / expires_at

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

addedOutput schema / properties / result

Added value: +{
+  "description": "The tool's observed JSON value or plain-text result."
+}

removedOutput schema / properties / session_bound
```
Removed value: -{
-  "type": "boolean"
-}
```

removedOutput schema / properties / status

Removed value: -{
-  "type": "string"
-}

addedOutput schema / required
```
Added value: +[
+  "result"
+]
```

AddedOct 10, 2026

TDQS

A3.7/5.0

Behavior4/5

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

Annotations already declare readOnly, idempotent, non-destructive, and open-world, so the safety profile is covered. The description still adds real context beyond that: no quota is consumed, product/provider limits may nonetheless apply, and an offline-verifiable AER-1 receipt is produced – all relevant traits an agent cannot infer from annotations alone.

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 most important information – what it does and that it costs no quota – is front-loaded, and the sentences are compact. The trailing 'AER-1 receipt, verifiable offline' is jargon-heavy and slightly marketing-flavoured, but it is one short clause rather than bloat.

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?

For a read-only, zero-required-parameter status tool with a full output schema, this covers what an agent needs: it names the return fields, confirms no quota spend, and warns that provider limits may still bind. The only gap is that it does not say what a non-active status looks like or what an agent should do next on an expired pass.

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% across all ten parameters, so the schema already carries the semantics and baseline is 3. The description adds only a loose partial enumeration ('current session, token_or_link, thread_id, or _zambo_key') that omits six documented parameters and refers to 'current session' rather than the actual field names, adding little beyond the schema.

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?

The description opens with a specific verb+resource ('Check your current pass') and names the alias sibling pass_status, so an agent can tell it apart from day_pass_activate, day_pass_redeem, or day_pass_checkout_link. It stops short of explicitly contrasting with those neighbouring purchase/activation tools.

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?

It implies usage through 'without spending quota' and the alias mention, which hints that this is the free, safe way to inspect state rather than to buy or redeem. There is no explicit when-not guidance or named alternative for cases where the agent should call day_pass_checkout_link or day_pass_activate 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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