Struct ToolResultBlock 

pub struct ToolResultBlock {
    pub tool_name: String,
    pub status: Status,
    pub content: Vec<u8>,
    pub schema_hint: Option<String>,
}

TOOL_RESULT block — represents output from a tool or MCP server.

Captures the name of the tool that was invoked, its execution status, the raw output, and an optional schema hint so downstream consumers know how to parse the content.

Field layout within body:

┌──────────┬───────────┬─────────────┬──────────────────────────┐
│ Field ID │ Wire Type │ Name        │ Description              │
├──────────┼───────────┼─────────────┼──────────────────────────┤
│ 1        │ Bytes     │ tool_name   │ Tool identifier          │
│ 2        │ Varint    │ status      │ Status enum byte         │
│ 3        │ Bytes     │ content     │ Tool output bytes        │
│ 4        │ Bytes     │ schema_hint │ Schema hint (optional)   │
└──────────┴───────────┴─────────────┴──────────────────────────┘

Fields

tool_name: String

status: Status

content: Vec<u8>

schema_hint: Option<String>

Optional schema hint (e.g. “json-schema://…”) to help consumers parse the content field.

Implementations

impl ToolResultBlock

pub fn encode_body(&self) -> Vec<u8>

Serialize this block’s fields into a TLV-encoded body.

pub fn decode_body(buf: &[u8]) -> Result<Self, TypeError>

Deserialize a TOOL_RESULT block from a TLV-encoded body.

Trait Implementations

impl Clone for ToolResultBlock

fn clone(&self) -> ToolResultBlock

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ToolResultBlock

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for ToolResultBlock

fn eq(&self, other: &ToolResultBlock) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for ToolResultBlock

impl StructuralPartialEq for ToolResultBlock