mcphost

host.quickstart

Return the shortest ordered sequence of calls to a working tool of kind, with your namespace and a filled-in example already substituted in, plus the current limits and a try_before_call table naming the one dry-run tool for each case. Read-only -- this call alone never creates a tenant. Call this before host.tool_publish if you're not sure what a spec should look like. Unauthenticated callers get a worked example with no tenant data; any other host./billing. call creates a tenant on first use, no signup required.

Input Schema

Name	Required	Description
`kind`	No	Which registered kind to return a worked example for, e.g. echo, http, python -- or a job-word alias (webhook, event, cron, ...) for its recipe. Omit to see every kind, alias and recipe name.
`tenant_key`	No	The key `signup` returned. Optional on the connection that ran signup (or host.redeem): that connection is already bound to the tenant it created, so later calls on it need no tenant_key. On a connection with no Authorization: Bearer header and no prior signup, omitting it implicitly signs that connection up as a brand-new tenant and runs this call as it -- see host.whoami's source field. When both a header and this argument are present, the header wins.
`retry_after_s`	No	Seconds a rate-limited signup said to wait; an error's next_call carries it back here. Informational, never required.

Output Schema

Name	Required	Description
`hint`	No
`kind`	No
`next`	No
`kinds`	No
`steps`	No
`verbs`	No
`limits`	No
`recipe`	No
`aliases`	No
`example`	No
`outcome`	No
`recipes`	No
`verdict`	No
`contract`	No	The asked kind's KindContract summary: the error families its failures carry and whether they carry data.source_line.
`endpoint`	No
`triggers`	No
`namespace`	No
`next_steps`	No
`sandbox_api`	No
`alt_endpoint`	No
`reachability`	No
`starter_tool`	No
`welcome_back`	No
`authenticated`	No
`install_links`	No
`resolved_from`	No
`bridge_returns`	No
`recipes_nearby`	No
`install_doc_url`	No
`try_before_call`	No
`host_steps_allowed`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 20, 2026

addedInput schema / properties / retry_after_s

Added value: +{
+  "description": "Seconds a rate-limited signup said to wait; an error's next_call carries it back here. Informational, never required.",
+  "type": "integer"
+}

Changed1 schema field changedOct 20, 2026
- addedInput schema / x-mcphost-validated
```
Added value: +true
```

Changed2 schema fields changedOct 18, 2026

addedOutput schema / $defs

Added value: +{
+  "ErrorEnvelope": {
+    "properties": {
+      "code": {
+        "type": "integer"
+      },
+      "data": {
+        "properties": {
+          "error_code": {
+            "type": "string"
+          },
+          "retryable": {
+            "type": "boolean"
+          }
+        },
+        "required": [
+          "error_code"
+        ],
+        "type": "object"
+      },
+      "message": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "code",
+      "message",
+      "data"
+    ],
+    "type": "object"
+  }
+}

addedOutput schema / x-error-envelope

Added value: +{
+  "$ref": "#/$defs/ErrorEnvelope"
+}

Changed2 schema fields changedOct 17, 2026

addedOutput schema / properties / next_steps

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

changedOutput schema / properties / recipes / type

Previous value: -[
-  "array",
-  "null"
-]New value: +[
+  "array",
+  "object",
+  "null"
+]

Changed1 schema field changedOct 16, 2026

addedOutput schema / properties / contract

Added value: +{
+  "description": "The asked kind's KindContract summary: the error families its failures carry and whether they carry data.source_line.",
+  "properties": {
+    "families": {
+      "items": {
+        "type": "string"
+      },
+      "type": [
+        "array",
+        "null"
+      ]
+    },
+    "source_line": {
+      "type": [
+        "boolean",
+        "null"
+      ]
+    }
+  },
+  "type": [
+    "object",
+    "null"
+  ]
+}

Changed215 schema fields changedOct 16, 2026
- changedOutput schema / properties / aliases / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / alt_endpoint / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / authenticated / type
```
Previous value: -"boolean"New value: +[
+  "boolean",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.call / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.channel.post / properties / channel_id / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.channel.post / properties / created_at / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.channel.post / properties / from_address / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.channel.post / properties / post_id / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.channel.post / properties / seq / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.channel.post / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.channel.read / properties / posts / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.channel.read / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.docs.get / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.docs.search / properties / index / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.docs.search / properties / results / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.docs.search / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.drift.reviews / properties / reviews / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.drift.reviews / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.lineage.blast_radius / properties / impacted / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.lineage.blast_radius / properties / truncated / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.lineage.blast_radius / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.lineage.trace / properties / downstream / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.lineage.trace / properties / downstream_count / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.lineage.trace / properties / id / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.lineage.trace / properties / kind / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.lineage.trace / properties / label / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.lineage.trace / properties / orphaned / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.lineage.trace / properties / upstream / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.lineage.trace / properties / uses / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.lineage.trace / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.msg.inbox / properties / messages / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.msg.inbox / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.msg.send / properties / delivered_to / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.msg.send / properties / message_id / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.msg.send / properties / refused / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.msg.send / properties / seq / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.msg.send / properties / thread_id / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.msg.send / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.progress / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.delete / properties / bytes_delta / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.delete / properties / deleted / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.delete / properties / key / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.delete / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.delete_rows / properties / bytes_delta / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.delete_rows / properties / deleted / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.delete_rows / properties / table / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.delete_rows / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.get / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.insert / properties / bytes_delta / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.insert / properties / ids / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.insert / properties / inserted / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.insert / properties / table / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.insert / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.list / properties / keys / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.list / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.query / properties / rows / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.query / properties / table / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.query / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.set / properties / bytes_delta / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.set / properties / key / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.set / properties / set / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.set / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.table_create / properties / bytes_delta / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.table_create / properties / created / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.table_create / properties / name / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.table_create / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.table_drop / properties / bytes_delta / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.table_drop / properties / dropped / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.table_drop / properties / name / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.state.table_drop / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.append / properties / appended / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.append / properties / ids / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.append / properties / table / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.append / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.chart / properties / caption / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.chart / properties / profile / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.chart / properties / recommendation / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.chart / properties / row_count / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.chart / properties / schema / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.chart / properties / title / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.chart / properties / vega_lite / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.chart / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.create / properties / created / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.create / properties / name / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.create / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.drop / properties / dropped / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.drop / properties / name / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.drop / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.list / properties / bytes_used / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.list / properties / tables / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.list / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.query / properties / rows / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.query / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.query(handle=True) / properties / bytes / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.query(handle=True) / properties / columns / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.query(handle=True) / properties / derived_from / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.query(handle=True) / properties / expires_unix / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.query(handle=True) / properties / handle / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.query(handle=True) / properties / row_count / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.query(handle=True) / properties / sample / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.query(handle=True) / properties / sample_cap / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.query(handle=True) / properties / stats / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.query(handle=True) / properties / table / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.query(handle=True) / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.schema / properties / bytes_used / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.schema / properties / columns / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.schema / properties / rows / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.schema / properties / table / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / properties / mcphost.table.schema / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / bridge_returns / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / endpoint / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / example / properties / args / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / example / properties / tool / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / example / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / hint / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / host_steps_allowed / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / install_doc_url / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / install_links / properties / claude_ai_steps / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / install_links / properties / claude_code_command / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / install_links / properties / cursor / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / install_links / properties / mcp_url / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / install_links / properties / surfaces / items / properties / artefact / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / install_links / properties / surfaces / items / properties / checked / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / install_links / properties / surfaces / items / properties / doc_url / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / install_links / properties / surfaces / items / properties / id / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / install_links / properties / surfaces / items / properties / kind / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / install_links / properties / surfaces / items / properties / label / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / install_links / properties / surfaces / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / install_links / properties / vscode / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / install_links / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / kind / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / kinds / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / limits / properties / call_timeout_default_s / type
```
Previous value: -"integer"New value: +[
+  "integer",
+  "null"
+]
```
- changedOutput schema / properties / limits / properties / call_timeout_max_s / type
```
Previous value: -"integer"New value: +[
+  "integer",
+  "null"
+]
```
- changedOutput schema / properties / limits / properties / concurrent_calls_host / type
```
Previous value: -"integer"New value: +[
+  "integer",
+  "null"
+]
```
- changedOutput schema / properties / limits / properties / concurrent_calls_per_tenant / type
```
Previous value: -"integer"New value: +[
+  "integer",
+  "null"
+]
```
- changedOutput schema / properties / limits / properties / forwarding / type
```
Previous value: -"boolean"New value: +[
+  "boolean",
+  "null"
+]
```
- changedOutput schema / properties / limits / properties / max_spec_bytes / type
```
Previous value: -"integer"New value: +[
+  "integer",
+  "null"
+]
```
- changedOutput schema / properties / limits / properties / max_tools_per_tenant / type
```
Previous value: -"integer"New value: +[
+  "integer",
+  "null"
+]
```
- changedOutput schema / properties / limits / properties / name_pattern / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / limits / properties / output_bytes_max / type
```
Previous value: -"integer"New value: +[
+  "integer",
+  "null"
+]
```
- changedOutput schema / properties / limits / properties / plan / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / limits / properties / request_body_bytes_max / type
```
Previous value: -"integer"New value: +[
+  "integer",
+  "null"
+]
```
- changedOutput schema / properties / limits / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / namespace / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / next / items / properties / alternative_arguments / properties / args / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / next / items / properties / alternative_arguments / properties / name / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / next / items / properties / alternative_arguments / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / next / items / properties / alternative_call / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / next / items / properties / arguments / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / next / items / properties / call / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / next / items / properties / note / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / next / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / outcome / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / reachability / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / recipe / properties / docs / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / recipe / properties / name / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / recipe / properties / steps / items / properties / args_example / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / recipe / properties / steps / items / properties / note / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / recipe / properties / steps / items / properties / tool / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / recipe / properties / steps / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / recipe / type
```
Previous value: -[
-  "object",
-  "string"
-]New value: +[
+  "object",
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / recipes / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / recipes_nearby / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / resolved_from / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / sandbox_api / properties / attrs / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / sandbox_api / properties / import / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / sandbox_api / properties / modules / properties / mcphost.channel / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / sandbox_api / properties / modules / properties / mcphost.docs / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / sandbox_api / properties / modules / properties / mcphost.drift / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / sandbox_api / properties / modules / properties / mcphost.lineage / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / sandbox_api / properties / modules / properties / mcphost.msg / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / sandbox_api / properties / modules / properties / mcphost.state / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / sandbox_api / properties / modules / properties / mcphost.table / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / sandbox_api / properties / modules / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / sandbox_api / properties / not_a_module / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / sandbox_api / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / starter_tool / properties / kind / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / starter_tool / properties / name / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / starter_tool / properties / publish_call / properties / arguments / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / starter_tool / properties / publish_call / properties / call / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / starter_tool / properties / publish_call / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / starter_tool / properties / spec / properties / method / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / starter_tool / properties / spec / properties / source / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / starter_tool / properties / spec / properties / url / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / starter_tool / properties / spec / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / starter_tool / properties / test_call / properties / arguments / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / starter_tool / properties / test_call / properties / call / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / starter_tool / properties / test_call / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / starter_tool / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / steps / items / properties / alternative_arguments / properties / args / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / steps / items / properties / alternative_arguments / properties / name / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / steps / items / properties / alternative_arguments / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / steps / items / properties / alternative_call / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / steps / items / properties / arguments / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / steps / items / properties / call / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / steps / items / properties / note / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / steps / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / triggers / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / try_before_call / items / properties / arguments / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / try_before_call / items / properties / call / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / try_before_call / items / properties / case / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / try_before_call / items / properties / note / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / try_before_call / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / verbs / type
```
Previous value: -"array"New value: +[
+  "array",
+  "null"
+]
```
- changedOutput schema / properties / verdict / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / welcome_back / properties / last_note / type
```
Removed value: -"null"
```
- changedOutput schema / properties / welcome_back / properties / last_seen / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
- changedOutput schema / properties / welcome_back / properties / notes / type
```
Previous value: -"integer"New value: +[
+  "integer",
+  "null"
+]
```
- changedOutput schema / properties / welcome_back / properties / since_you_left / properties / calls / type
```
Previous value: -"integer"New value: +[
+  "integer",
+  "null"
+]
```
- changedOutput schema / properties / welcome_back / properties / since_you_left / properties / days / type
```
Previous value: -"integer"New value: +[
+  "integer",
+  "null"
+]
```
- changedOutput schema / properties / welcome_back / properties / since_you_left / properties / inbox / type
```
Previous value: -"integer"New value: +[
+  "integer",
+  "null"
+]
```
- changedOutput schema / properties / welcome_back / properties / since_you_left / properties / runs / type
```
Previous value: -"integer"New value: +[
+  "integer",
+  "null"
+]
```
- changedOutput schema / properties / welcome_back / properties / since_you_left / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```
- changedOutput schema / properties / welcome_back / type
```
Previous value: -"object"New value: +[
+  "object",
+  "null"
+]
```

Changed1 schema field changedOct 12, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "aliases": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "alt_endpoint": {
+      "type": "string"
+    },
+    "authenticated": {
+      "type": "boolean"
+    },
+    "bridge_returns": {
+      "properties": {
+        "mcphost.call": {
+          "type": "string"
+        },
+        "mcphost.channel.post": {
+          "properties": {
+            "channel_id": {
+              "type": "string"
+            },
+            "created_at": {
+              "type": "string"
+            },
+            "from_address": {
+              "type": "string"
+            },
+            "post_id": {
+              "type": "string"
+            },
+            "seq": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.channel.read": {
+          "properties": {
+            "posts": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.docs.get": {
+          "type": "string"
+        },
+        "mcphost.docs.search": {
+          "properties": {
+            "index": {
+              "type": "string"
+            },
+            "results": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.drift.reviews": {
+          "properties": {
+            "reviews": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.lineage.blast_radius": {
+          "properties": {
+            "impacted": {
+              "type": "string"
+            },
+            "truncated": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.lineage.trace": {
+          "properties": {
+            "downstream": {
+              "type": "string"
+            },
+            "downstream_count": {
+              "type": "string"
+            },
+            "id": {
+              "type": "string"
+            },
+            "kind": {
+              "type": "string"
+            },
+            "label": {
+              "type": "string"
+            },
+            "orphaned": {
+              "type": "string"
+            },
+            "upstream": {
+              "type": "string"
+            },
+            "uses": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.msg.inbox": {
+          "properties": {
+            "messages": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.msg.send": {
+          "properties": {
+            "delivered_to": {
+              "type": "string"
+            },
+            "message_id": {
+              "type": "string"
+            },
+            "refused": {
+              "type": "string"
+            },
+            "seq": {
+              "type": "string"
+            },
+            "thread_id": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.progress": {
+          "type": "string"
+        },
+        "mcphost.state.delete": {
+          "properties": {
+            "bytes_delta": {
+              "type": "string"
+            },
+            "deleted": {
+              "type": "string"
+            },
+            "key": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.state.delete_rows": {
+          "properties": {
+            "bytes_delta": {
+              "type": "string"
+            },
+            "deleted": {
+              "type": "string"
+            },
+            "table": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.state.get": {
+          "type": "string"
+        },
+        "mcphost.state.insert": {
+          "properties": {
+            "bytes_delta": {
+              "type": "string"
+            },
+            "ids": {
+              "type": "string"
+            },
+            "inserted": {
+              "type": "string"
+            },
+            "table": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.state.list": {
+          "properties": {
+            "keys": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.state.query": {
+          "properties": {
+            "rows": {
+              "type": "string"
+            },
+            "table": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.state.set": {
+          "properties": {
+            "bytes_delta": {
+              "type": "string"
+            },
+            "key": {
+              "type": "string"
+            },
+            "set": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.state.table_create": {
+          "properties": {
+            "bytes_delta": {
+              "type": "string"
+            },
+            "created": {
+              "type": "string"
+            },
+            "name": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.state.table_drop": {
+          "properties": {
+            "bytes_delta": {
+              "type": "string"
+            },
+            "dropped": {
+              "type": "string"
+            },
+            "name": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.table.append": {
+          "properties": {
+            "appended": {
+              "type": "string"
+            },
+            "ids": {
+              "type": "string"
+            },
+            "table": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.table.chart": {
+          "properties": {
+            "caption": {
+              "type": "string"
+            },
+            "profile": {
+              "type": "string"
+            },
+            "recommendation": {
+              "type": "string"
+            },
+            "row_count": {
+              "type": "string"
+            },
+            "schema": {
+              "type": "string"
+            },
+            "title": {
+              "type": "string"
+            },
+            "vega_lite": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.table.create": {
+          "properties": {
+            "created": {
+              "type": "string"
+            },
+            "name": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.table.drop": {
+          "properties": {
+            "dropped": {
+              "type": "string"
+            },
+            "name": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.table.list": {
+          "properties": {
+            "bytes_used": {
+              "type": "string"
+            },
+            "tables": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.table.query": {
+          "properties": {
+            "rows": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.table.query(handle=True)": {
+          "properties": {
+            "bytes": {
+              "type": "string"
+            },
+            "columns": {
+              "type": "string"
+            },
+            "derived_from": {
+              "type": "string"
+            },
+            "expires_unix": {
+              "type": "string"
+            },
+            "handle": {
+              "type": "string"
+            },
+            "row_count": {
+              "type": "string"
+            },
+            "sample": {
+              "type": "string"
+            },
+            "sample_cap": {
+              "type": "string"
+            },
+            "stats": {
+              "type": "string"
+            },
+            "table": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "mcphost.table.schema": {
+          "properties": {
+            "bytes_used": {
+              "type": "string"
+            },
+            "columns": {
+              "type": "string"
+            },
+            "rows": {
+              "type": "string"
+            },
+            "table": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        }
+      },
+      "type": "object"
+    },
+    "endpoint": {
+      "type": "string"
+    },
+    "example": {
+      "properties": {
+        "args": {
+          "type": "object"
+        },
+        "tool": {
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "hint": {
+      "type": "string"
+    },
+    "host_steps_allowed": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "install_doc_url": {
+      "type": "string"
+    },
+    "install_links": {
+      "properties": {
+        "claude_ai_steps": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        },
+        "claude_code_command": {
+          "type": "string"
+        },
+        "cursor": {
+          "type": "string"
+        },
+        "mcp_url": {
+          "type": "string"
+        },
+        "surfaces": {
+          "items": {
+            "properties": {
+              "artefact": {
+                "type": "string"
+              },
+              "checked": {
+                "type": "string"
+              },
+              "doc_url": {
+                "type": "string"
+              },
+              "id": {
+                "type": "string"
+              },
+              "kind": {
+                "type": "string"
+              },
+              "label": {
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          "type": "array"
+        },
+        "vscode": {
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "kind": {
+      "type": "string"
+    },
+    "kinds": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "limits": {
+      "properties": {
+        "call_timeout_default_s": {
+          "type": "integer"
+        },
+        "call_timeout_max_s": {
+          "type": "integer"
+        },
+        "concurrent_calls_host": {
+          "type": "integer"
+        },
+        "concurrent_calls_per_tenant": {
+          "type": "integer"
+        },
+        "forwarding": {
+          "type": "boolean"
+        },
+        "max_spec_bytes": {
+          "type": "integer"
+        },
+        "max_tools_per_tenant": {
+          "type": "integer"
+        },
+        "name_pattern": {
+          "type": "string"
+        },
+        "output_bytes_max": {
+          "type": "integer"
+        },
+        "plan": {
+          "type": "object"
+        },
+        "request_body_bytes_max": {
+          "type": "integer"
+        }
+      },
+      "type": "object"
+    },
+    "namespace": {
+      "type": "string"
+    },
+    "next": {
+      "items": {
+        "properties": {
+          "alternative_arguments": {
+            "properties": {
+              "args": {
+                "type": "object"
+              },
+              "name": {
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          "alternative_call": {
+            "type": "string"
+          },
+          "arguments": {
+            "type": "object"
+          },
+          "call": {
+            "type": "string"
+          },
+          "note": {
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "outcome": {
+      "type": "string"
+    },
+    "reachability": {
+      "type": "string"
+    },
+    "recipe": {
+      "properties": {
+        "docs": {
+          "type": "string"
+        },
+        "name": {
+          "type": "string"
+        },
+        "steps": {
+          "items": {
+            "properties": {
+              "args_example": {
+                "type": "object"
+              },
+              "note": {
+                "type": "string"
+              },
+              "tool": {
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          "type": "array"
+        }
+      },
+      "type": [
+        "object",
+        "string"
+      ]
+    },
+    "recipes": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "recipes_nearby": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "resolved_from": {
+      "type": "string"
+    },
+    "sandbox_api": {
+      "properties": {
+        "attrs": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        },
+        "import": {
+          "type": "string"
+        },
+        "modules": {
+          "properties": {
+            "mcphost.channel": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "mcphost.docs": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "mcphost.drift": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "mcphost.lineage": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "mcphost.msg": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "mcphost.state": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "mcphost.table": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            }
+          },
+          "type": "object"
+        },
+        "not_a_module": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        }
+      },
+      "type": "object"
+    },
+    "starter_tool": {
+      "properties": {
+        "kind": {
+          "type": "string"
+        },
+        "name": {
+          "type": "string"
+        },
+        "publish_call": {
+          "properties": {
+            "arguments": {
+              "type": "object"
+            },
+            "call": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "spec": {
+          "properties": {
+            "method": {
+              "type": "string"
+            },
+            "source": {
+              "type": "string"
+            },
+            "url": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "test_call": {
+          "properties": {
+            "arguments": {
+              "type": "object"
+            },
+            "call": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        }
+      },
+      "type": "object"
+    },
+    "steps": {
+      "items": {
+        "properties": {
+          "alternative_arguments": {
+            "properties": {
+              "args": {
+                "type": "object"
+              },
+              "name": {
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          "alternative_call": {
+            "type": "string"
+          },
+          "arguments": {
+            "type": "object"
+          },
+          "call": {
+            "type": "string"
+          },
+          "note": {
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "triggers": {
+      "type": "string"
+    },
+    "try_before_call": {
+      "items": {
+        "properties": {
+          "arguments": {
+            "type": "object"
+          },
+          "call": {
+            "type": "string"
+          },
+          "case": {
+            "type": "string"
+          },
+          "note": {
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "verbs": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "verdict": {
+      "type": "string"
+    },
+    "welcome_back": {
+      "properties": {
+        "last_note": {
+          "type": "null"
+        },
+        "last_seen": {
+          "type": "string"
+        },
+        "notes": {
+          "type": "integer"
+        },
+        "since_you_left": {
+          "properties": {
+            "calls": {
+              "type": "integer"
+            },
+            "days": {
+              "type": "integer"
+            },
+            "inbox": {
+              "type": "integer"
+            },
+            "runs": {
+              "type": "integer"
+            }
+          },
+          "type": "object"
+        }
+      },
+      "type": "object"
+    }
+  },
+  "type": "object"
+}

Changed1 schema field changedOct 9, 2026
- changedInput schema / required
```
Previous value: -[
-  "kind"
-]New value: +[]
```

Changed1 schema field changedOct 4, 2026

changedInput schema / properties / tenant_key / description

Previous value: -"The key `signup` returned. Optional on the connection that ran signup (or host.redeem): that connection is already bound to the tenant it created, so later calls on it need no tenant_key. Required only when this connection carries no Authorization: Bearer header and never ran signup -- when both a header and this argument are present, the header wins. Omitting it on such a connection returns tenant_key_missing (-32602)."New value: +"The key `signup` returned. Optional on the connection that ran signup (or host.redeem): that connection is already bound to the tenant it created, so later calls on it need no tenant_key. On a connection with no Authorization: Bearer header and no prior signup, omitting it implicitly signs that connection up as a brand-new tenant and runs this call as it -- see host.whoami's source field. When both a header and this argument are present, the header wins."

Changed1 schema field changedOct 3, 2026
- addedInput schema / additionalProperties
```
Added value: +false
```

Changed1 schema field changedSep 30, 2026

changedInput schema / properties / tenant_key / description

Previous value: -"The key `signup` returned. Required only when this connection carries no Authorization: Bearer header -- when both are present, the header wins. Omitting it on a connection with no header returns tenant_key_missing (-32602)."New value: +"The key `signup` returned. Optional on the connection that ran signup (or host.redeem): that connection is already bound to the tenant it created, so later calls on it need no tenant_key. Required only when this connection carries no Authorization: Bearer header and never ran signup -- when both a header and this argument are present, the header wins. Omitting it on such a connection returns tenant_key_missing (-32602)."

Changed1 schema field changedSep 30, 2026

changedInput schema / properties / kind / description

Previous value: -"Which registered kind to return a worked example for, e.g. echo, http, python."New value: +"Which registered kind to return a worked example for, e.g. echo, http, python -- or a job-word alias (webhook, event, cron, ...) for its recipe. Omit to see every kind, alias and recipe name."

Changed1 schema field changedSep 30, 2026

changedInput schema / properties / tenant_key / description

Previous value: -"The key `signup` returned. Required only when this connection carries no Authorization: Bearer header -- when both are present, the header wins."New value: +"The key `signup` returned. Required only when this connection carries no Authorization: Bearer header -- when both are present, the header wins. Omitting it on a connection with no header returns tenant_key_missing (-32602)."

Changed1 schema field changedSep 11, 2026

addedInput schema / properties / kind / description

Added value: +"Which registered kind to return a worked example for, e.g. echo, http, python."

First observedSep 6, 2026

TDQS

A4.3/5.0

Behavior4/5

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

With no annotations, the description carries the full behavioral burden and does well: it states the call is read-only and never creates a tenant, explains that unauthenticated callers get a worked example with no tenant data, and notes that any other host.*/billing.* call creates a tenant on first use. It does not cover error handling or rate limits on this call itself, but the key side-effect and auth nuances are disclosed.

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 four sentences, front-loaded with what the tool returns, then read-only status, then usage guidance, and finally auth-related behavior. Every sentence adds value, though the first sentence is dense and could be slightly shorter.

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?

An output schema exists, so return values need not be explained. Schema coverage is 100% for parameters. Behavior and usage are well covered. The only missing elements are edge cases like invalid kind or specific error responses, which are minor for this help/quickstart tool.

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 schema already documents all three parameters in detail. The description adds no additional syntax or meaning for kind, tenant_key, or retry_after_s beyond what the schema provides. Baseline 3 is appropriate when the schema does the heavy lifting.

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?

The description states a specific verb (Return) and a clear resource (shortest ordered sequence of calls to a working tool of `kind`, plus limits and a try_before_call table). It distinguishes itself from siblings by explicitly referencing host.tool_publish and the broader host.*/billing.* context, so an agent can tell what it does without opening the schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It names the alternative (host.tool_publish) and the condition that selects this tool ('Call this before host.tool_publish if you're not sure what a spec should look like'). It also implicitly guides usage for unauthenticated callers versus other host.*/billing.* calls that create tenants. No inference needed.

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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