This PR removes two fields from JSON schemas (`$schema` and `title`),
which are not expected by any model provider, but were spuriously
included by our JSON schema library, `schemars`.
These added noise to requests and cost wasted input tokens.
### Old
```json
{
"$schema": "http://json-schema.org/draft-07/schema#",
"title": "FetchToolInput",
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"description": "The URL to fetch.",
"type": "string"
}
}
}
```
### New:
```json
{
"properties": {
"url": {
"description": "The URL to fetch.",
"type": "string"
}
},
"required": [
"url"
],
"type": "object"
}
```
- N/A
57d8397f53