assay-core 3.9.1

High-performance evaluation framework for LLM agents (Core)
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141

use crate::mcp::decision::{DecisionEmitter, DecisionEvent};
use crate::mcp::jsonrpc::JsonRpcRequest;
use crate::mcp::lifecycle::{LifecycleEmitter, LifecycleEvent};
use crate::mcp::policy::{
    FailClosedMode, McpPolicy, RedactArgsContract, RestrictScopeContract, ToolPolicy, ToolRiskClass,
};
use chrono::{Duration, Utc};
use serde_json::Value;
use std::sync::atomic::{AtomicUsize, Ordering};
use std::sync::Mutex;

pub(super) struct CountingEmitter(pub(super) AtomicUsize);

impl DecisionEmitter for CountingEmitter {
    fn emit(&self, _event: &DecisionEvent) {
        self.0.fetch_add(1, Ordering::SeqCst);
    }
}

pub(super) fn make_tool_call_request(tool: &str, args: Value) -> JsonRpcRequest {
    JsonRpcRequest {
        jsonrpc: "2.0".to_string(),
        id: Some(Value::Number(1.into())),
        method: "tools/call".to_string(),
        params: serde_json::json!({
            "name": tool,
            "arguments": args
        }),
    }
}

pub(super) fn approval_required_policy() -> McpPolicy {
    McpPolicy {
        tools: ToolPolicy {
            approval_required: Some(vec!["deploy_*".to_string()]),
            ..Default::default()
        },
        ..Default::default()
    }
}

pub(super) fn restrict_scope_policy_with_contract(contract: RestrictScopeContract) -> McpPolicy {
    McpPolicy {
        tools: ToolPolicy {
            restrict_scope: Some(vec!["deploy_*".to_string()]),
            restrict_scope_contract: Some(contract),
            ..Default::default()
        },
        ..Default::default()
    }
}

pub(super) fn restrict_scope_policy() -> McpPolicy {
    restrict_scope_policy_with_contract(RestrictScopeContract {
        scope_type: "resource".to_string(),
        scope_value: "service/prod".to_string(),
        scope_match_mode: "exact".to_string(),
    })
}

pub(super) fn redact_args_policy_with_contract(contract: RedactArgsContract) -> McpPolicy {
    McpPolicy {
        tools: ToolPolicy {
            redact_args: Some(vec!["deploy_*".to_string()]),
            redact_args_contract: Some(contract),
            ..Default::default()
        },
        ..Default::default()
    }
}

pub(super) fn redact_args_policy() -> McpPolicy {
    redact_args_policy_with_contract(RedactArgsContract {
        redaction_target: "body".to_string(),
        redaction_mode: "mask".to_string(),
        redaction_scope: "request".to_string(),
    })
}

pub(super) fn approval_artifact(
    bound_tool: &str,
    bound_resource: &str,
    expires_in_seconds: i64,
) -> Value {
    let issued_at = Utc::now() - Duration::minutes(5);
    let expires_at = Utc::now() + Duration::seconds(expires_in_seconds);
    serde_json::json!({
        "_meta": {
            "resource": "service/prod",
            "approval": {
                "approval_id": "apr_test_001",
                "approver": "alice@example.com",
                "issued_at": issued_at.to_rfc3339(),
                "expires_at": expires_at.to_rfc3339(),
                "scope": "tool:deploy",
                "bound_tool": bound_tool,
                "bound_resource": bound_resource
            }
        }
    })
}

pub(super) fn outcome_for<'a>(
    event: &'a DecisionEvent,
    obligation_type: &str,
) -> &'a crate::mcp::decision::ObligationOutcome {
    event
        .data
        .obligation_outcomes
        .iter()
        .find(|outcome| outcome.obligation_type == obligation_type)
        .expect("expected obligation outcome")
}

pub(super) fn assert_fail_closed_defaults(event: &DecisionEvent) {
    let context = event
        .data
        .fail_closed
        .as_ref()
        .expect("expected fail_closed context");
    assert_eq!(context.tool_risk_class, ToolRiskClass::LowRiskRead);
    assert_eq!(context.fail_closed_mode, FailClosedMode::DegradeReadOnly);
    assert_eq!(context.fail_closed_trigger, None);
    assert!(!context.fail_closed_applied);
    assert!(context.fail_closed_error_code.is_none());
}

#[allow(dead_code)] // Prepared for future tests with mandate authorization
pub(super) struct CountingLifecycleEmitter(
    pub(super) AtomicUsize,
    pub(super) Mutex<Vec<LifecycleEvent>>,
);

impl LifecycleEmitter for CountingLifecycleEmitter {
    fn emit(&self, event: &LifecycleEvent) {
        self.0.fetch_add(1, Ordering::SeqCst);
        if let Ok(mut events) = self.1.lock() {
            events.push(event.clone());
        }
    }
}