Zambo AI Tools

Day Pass activate

day_pass_activate

Destructive

Agent-native access activation endpoint. Accepts an optional payment envelope or existing access key and returns a payment challenge or verified activation result. Activation results include receipt URL, run ID, access key, expiration, usage guidance, and a spend receipt. Activation occurs only after a verified transfer.

Input Schema

Name	Required	Description	Default
`_ref`	No	Optional handover referral ID from your install link.
`sponsor`	No	Explicitly sponsor another team's closed workflow; branding ownership never transfers.
`x_payment`	No	Base64 JSON x402 payment envelope recorded from the live challenge, sent as X-Payment.
`_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.
`workflow_id`	No	Optional workflow to save with proof after verified payment.
`_caller_label`	No	Optional caller label recorded as a caller-reported claim in the receipt.	zambo-starter
`_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 changedOct 28, 2026

changedInput schema / properties / workflow_id / description

Previous value: -"Optional workflow to seal after verified payment."New value: +"Optional workflow to save with proof after verified payment."

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"
+}
```

Changed13 schema fields changedOct 17, 2026

addedInput schema / properties / _ref

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

changedInput schema / properties / x_payment / description

Previous value: -"Base64 JSON x402 payment envelope wallet-authorized from the live challenge, sent as X-Payment."New value: +"Base64 JSON x402 payment envelope recorded from the live challenge, sent as X-Payment."

changedOutput schema / additionalProperties
```
Previous value: -falseNew value: +true
```

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 / 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 / maxLength
```
Added value: +200
```
addedOutput schema / properties / human_line / pattern
```
Added value: +"^[^\\r\\n]*$"
```

addedOutput schema / properties / ids

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

addedOutput schema / properties / next

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

addedOutput schema / properties / ok
```
Added value: +{
+  "type": "boolean"
+}
```
addedOutput schema / properties / renew_nudge
```
Added value: +{
+  "type": "object"
+}
```

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"
+]

Changed1 schema field changedOct 16, 2026

changedInput schema / properties / x_payment / description

Previous value: -"Base64 JSON x402 payment envelope signed from the live challenge, sent as X-Payment."New value: +"Base64 JSON x402 payment envelope wallet-authorized from the live challenge, sent as X-Payment."

Changed14 schema fields changedOct 16, 2026

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 / expires_at

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

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

addedOutput schema / properties / intents

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

addedOutput schema / properties / next_up
```
Added value: +{
+  "type": "string"
+}
```
addedOutput schema / properties / payment
```
Added value: +{
+  "type": "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"
+  ]
+}

Changed2 schema fields changedOct 12, 2026

addedInput schema / properties / sponsor

Added value: +{
+  "description": "Explicitly sponsor another team's closed workflow; branding ownership never transfers.",
+  "type": "boolean"
+}

addedInput schema / properties / workflow_id

Added value: +{
+  "description": "Optional workflow to seal after verified payment.",
+  "format": "uuid",
+  "type": "string"
+}

Changed1 schema field changedOct 11, 2026

changedInput schema / examples

Previous value: -[
-  {
-    "payment_method": "x402"
-  }
-]New value: +[
+  {
+    "_session_id": "73513c44-6969-435e-86eb-0fc262521fd1"
+  }
+]

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."

addedInput schema / properties / _zambo_key

Added value: +{
+  "description": "Optional opaque Zambo access capability. Never place it in a URL or public log.",
+  "maxLength": 160,
+  "type": "string"
+}

removedInput schema / properties / human_approved

Removed value: -{
-  "description": "Must be true only after the human explicitly approved this $0.99 USDC payment. Required when sending x_payment.",
-  "type": "boolean"
-}

Changed9 schema fields changedOct 10, 2026

changedOutput schema / additionalProperties
```
Previous value: -trueNew value: +false
```
removedOutput schema / properties / access_key
```
Removed value: -{
-  "type": "string"
-}
```
removedOutput schema / properties / activated
```
Removed value: -{
-  "type": "boolean"
-}
```
removedOutput schema / properties / already_active
```
Removed value: -{
-  "type": "boolean"
-}
```
removedOutput schema / properties / expires_at
```
Removed value: -{
-  "type": "string"
-}
```

removedOutput schema / properties / how_to_use

Removed value: -{
-  "additionalProperties": true,
-  "type": "object"
-}

addedOutput schema / properties / result

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

removedOutput schema / properties / x711_credits
```
Removed value: -{
-  "type": "number"
-}
```
addedOutput schema / required
```
Added value: +[
+  "result"
+]
```

Changed1 schema field changedOct 10, 2026

addedInput schema / properties / session_id

Added value: +{
+  "description": "Alias for _session_id.",
+  "maxLength": 64,
+  "type": "string"
+}

Changed2 schema fields changedOct 10, 2026

addedInput schema / properties / _caller_label

Added value: +{
+  "description": "Optional self-reported caller label. It is recorded as a claim, not independently verified.",
+  "maxLength": 80,
+  "type": "string"
+}

addedInput schema / properties / _session_id

Added value: +{
+  "description": "Optional stable Zambo session ID used to preserve continuity across tool calls.",
+  "maxLength": 64,
+  "type": "string"
+}

Changed1 schema field changedOct 4, 2026

addedInput schema / properties / human_approved

Added value: +{
+  "description": "Must be true only after the human explicitly approved this $0.99 USDC payment. Required when sending x_payment.",
+  "type": "boolean"
+}

Changed1 schema field changedOct 2, 2026

addedInput schema / properties / _continuity_ai_label

Added value: +{
+  "description": "Optional self-reported AI client label for the private continuity timeline. Zambo does not independently verify the client.",
+  "maxLength": 48,
+  "type": "string"
+}

Changed7 schema fields changedSep 26, 2026

addedInput schema / examples

Added value: +[
+  {
+    "payment_method": "x402"
+  }
+]

removedInput schema / properties / payment_intent

Removed value: -{
-  "description": "Server-issued payment intent from the first call.",
-  "type": "string"
-}

removedInput schema / properties / tx_hash

Removed value: -{
-  "description": "Confirmed Base USDC transaction hash.",
-  "type": "string"
-}

addedInput schema / properties / x_payment

Added value: +{
+  "description": "Base64 JSON x402 payment envelope signed from the live challenge, sent as X-Payment.",
+  "type": "string"
+}

addedOutput schema / properties / access_key
```
Added value: +{
+  "type": "string"
+}
```
addedOutput schema / properties / already_active
```
Added value: +{
+  "type": "boolean"
+}
```

addedOutput schema / properties / how_to_use

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

Changed4 schema fields changedSep 11, 2026

removedInput schema / properties / email

Removed value: -{
-  "description": "Your email address — used to link the 24h pass to your account.",
-  "type": "string"
-}

addedInput schema / properties / payment_intent

Added value: +{
+  "description": "Server-issued payment intent from the first call.",
+  "type": "string"
+}

changedInput schema / properties / tx_hash / description

Previous value: -"Transaction hash after sending payment. USDC on Base: get from your wallet or basescan.org. $ZAMBO on Solana: get from your wallet or solscan.io."New value: +"Confirmed Base USDC transaction hash."

removedInput schema / required

Removed value: -[
-  "email",
-  "tx_hash"
-]

AddedSep 7, 2026
RemovedSep 5, 2026

Changed1 schema field changedSep 3, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "properties": {
+    "activated": {
+      "type": "boolean"
+    },
+    "expires_at": {
+      "type": "string"
+    },
+    "x711_credits": {
+      "type": "number"
+    }
+  },
+  "type": "object"
+}

Changed1 schema field changedJul 19, 2026

changedInput schema / properties / tx_hash / description

Previous value: -"Transaction hash from sending 1.49 USDC on Base to 0xb753be5Eac5B29c711051DfF91279834e9C9b9AC. Get it from your wallet or basescan.org."New value: +"Transaction hash after sending payment. USDC on Base: get from your wallet or basescan.org. $ZAMBO on Solana: get from your wallet or solscan.io."

AddedJul 8, 2026
RemovedJun 30, 2026

Changed1 schema field changedJun 30, 2026

changedInput schema / properties / tx_hash / description

Previous value: -"The Base mainnet transaction hash from your 1.49 USDC payment (starts with 0x). Get it from your wallet or https://basescan.org after sending."New value: +"The Base mainnet transaction hash from your payment (starts with 0x). Get it from your wallet or https://basescan.org after sending."

AddedJun 14, 2026

TDQS

B3.4/5.0

Behavior3/5

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

Annotations already declare destructiveHint=true, idempotentHint=false, and openWorldHint=true. The description adds useful behavior beyond that by explaining the payment-gated activation flow and the challenge-vs-result response modes, but it does not clarify what is consumed or destroyed by activation, whether the spend is immediate, or how irreversible the operation is.

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 description is front-loaded and reasonably efficient: purpose first, then input modes, then output/result context. Some phrases like 'Agent-native' and the result list are less essential, especially since an output schema exists, but the prose remains compact and readable.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

It covers the core payment challenge to verified activation flow, and the existence of an output schema reduces the need to explain return values in detail. Still, for a 10-parameter destructive activation tool, it leaves sibling selection and the roles of optional session/workflow/sponsor parameters largely to the schema or inference.

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 baseline is 3. The description conceptually maps 'payment envelope' to x_payment and 'existing access key' to _zambo_key, but it does not add meaning for the other optional parameters such as session_id, workflow_id, sponsor, _ref, or caller fields.

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 states that this tool activates Day Pass/access and describes the accept/return modes: payment envelope or access key in, payment challenge or activation result out. However, 'Agent-native access activation endpoint' is somewhat jargon-heavy and it never names day_pass_redeem, day_pass_checkout_link, or day_pass_status, so sibling differentiation is left implicit.

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 provides an important prerequisite, 'Activation occurs only after a verified transfer,' and implies usage when an agent has a payment envelope or existing access key. But it does not explicitly say when to use this versus day_pass_redeem, day_pass_checkout_link, or day_pass_status, nor does it state when not to use it.

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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