157 lines
3.5 KiB
YAML
157 lines
3.5 KiB
YAML
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fluid_hypothesis:
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schema_version: "0.1"
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id: "H-000184"
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interface_id: "customer-finance-api"
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state: "PRIORITIZED"
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created_at: "2026-09-04T12:00:00Z"
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created_by:
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type: "daimon"
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id: "fluid-daimon/customer-finance-api"
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title: "Provide direct latest-invoice capability"
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observation:
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summary: >
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A significant consumer cohort retrieves invoice collections,
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sorts them by issue date, and discards all but the first item.
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evidence_refs:
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- "telemetry:invoice-pattern-2026w36"
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- "feedback:F-9821"
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affected_cohorts:
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- "partner-integrations"
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- "coding-agents"
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observation_window:
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start: "2026-08-15T00:00:00Z"
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end: "2026-09-01T00:00:00Z"
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pressure:
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classes:
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- "successful_but_inefficient_usage"
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- "repeated_expectation_mismatch"
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severity: 0.61
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confidence: 0.88
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explanation:
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claim: >
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Consumers treat "latest invoice" as a domain-level concept
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and the existing generic collection interface does not present
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that concept directly.
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reach:
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score: 0.42
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explains:
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- "P-1831"
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- "P-1834"
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notes: >
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Medium reach: explains several related request patterns
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but not broader financial-context pressure.
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proposed_adaptation:
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class: "contract"
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summary: >
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Add an explicit latest-invoice retrieval capability.
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candidate_contract:
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method: "GET"
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path: "/customers/{id}/invoices/latest"
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implementation_scope: "interface_only"
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backend_requirements:
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required: false
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requirement_refs: []
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expected_outcomes:
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- metric: "requests_per_completed_task"
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cohort: "all"
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baseline: 2.7
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target: 1.2
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direction: "lower"
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- metric: "client_side_sort_workarounds"
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cohort: "all"
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baseline: 1.0
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target: 0.2
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direction: "lower"
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guardrails:
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- metric: "p95_latency_ms"
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operator: "<="
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threshold: 315
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- metric: "authorization_scope_change"
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operator: "=="
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threshold: false
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- metric: "backend_query_count_delta"
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operator: "<="
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threshold: 0
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fitness_dimensions:
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expected:
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client_utility: 0.70
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correctness: 0.00
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reliability: 0.00
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performance: 0.10
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discoverability: 0.65
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simplicity: -0.15
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compatibility: 0.00
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security: 0.00
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maintainability: -0.05
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operational_cost: 0.00
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complexity:
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expected_delta:
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surface_area: 1
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concept_count: 0
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operation_count: 1
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semantic_overlap: 0.1
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cognitive_load: -0.2
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score: 0.18
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risk:
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level: "LOW"
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reasons:
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- "read-only operation"
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- "no authorization expansion"
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economics:
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estimated_experiment_cost: 18.00
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estimated_implementation_cost: 40.00
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currency: "EUR"
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expected_value_class: "MEDIUM"
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learning_value:
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score: 0.56
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notes: >
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Useful signal for whether first-class convenience resources
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improve agent and partner integration behavior.
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priority:
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score: 0.71
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decided_by: "optimization-policy-v3"
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success_criteria:
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expression: >
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requests_per_completed_task <= 1.2
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AND no hard guardrail violation
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failure_criteria:
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expression: >
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any hard guardrail violation
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OR adoption below 5% after 30 days when equally discoverable
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candidate_revision_refs:
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- "R-000221"
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experiment_refs:
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- "E-000093"
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outcome:
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status: null
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summary: null
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evidence_refs: []
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audit:
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decision_refs:
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- "D-2811"
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immutable_event_refs:
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- "EV-990218"
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