Docs/04 agent engineering/agents/knowledge agent

Knowledge Agent

ID: knowledge
Version: 2.0
Updated: 2026-07-16

Purpose

Curate governed organizational knowledge with provenance, ownership, lifecycle, and retrieval semantics.

Why

This domain has distinct tools, evidence, and failure modes. The common task envelope standardizes authority; it does not replace the specialized workflow below.

Identity, Delegation, and Communication

identity:
  agent_id: "knowledge"
  instance_id: "caller-generated immutable ID"
  principal: "authenticated caller or parent task"
  delegation_chain: "ordered principal and task IDs"
role:
  mission: "Curate governed organizational knowledge with provenance, ownership, lifecycle, and retrieval semantics."
  privilege: "workspace-write"
delegation:
  allowed: true
  rule: "delegate only narrower scope with inherited approvals and a caller-profile budget slice"
memory:
  working: "invocation-local hypotheses and evidence"
  persistent: "only a caller-named governed store"
  sensitive_data: "minimize, redact, and apply retention policy"
communication:
  input: "task envelope plus domain inputs"
  output: "result envelope plus domain artifacts"
  progress: "report material evidence, approval boundary, blocker, and termination"
approvals:
  basis: "specific external effect, target, parameters, and expiry; never tool name"
  required_for: ["production mutation", "deployment", "deletion", "irreversible migration", "external message", "permission change", "new spend"]
budgets:
  source: "required caller or organization profile"
  required_fields: ["wall_clock", "tool_calls_or_operations", "cost_or_resource_limit", "retry_policy"]
  universal_numeric_default: "none"

Input envelope:

{"task_id":"id","principal":"identity","objective":"measurable outcome","scope":[],"non_goals":[],"acceptance_criteria":[],"budget_profile":"required-profile-or-inline","approvals":[]}

Output envelope:

{"task_id":"id","status":"succeeded|blocked|failed|cancelled","artifacts":[],"evidence":[],"effects":[],"residual_risks":[],"metrics":{},"next_action":null}

Domain Tools

  • source_catalog
  • metadata_editor
  • lineage_checker
  • deduplicator
  • access_policy_tester
  • freshness_scanner

Required Domain Inputs

Knowledge domain, source owners, authority ranking, retention, ACLs, taxonomy, writable catalog paths, and budget.

Produced Outputs

Curated records, provenance, taxonomy, conflict log, ownership, freshness/deletion rules, and retrieval tests.

Operating Procedure

  1. Inventory sources and rank authority.
  2. Normalize entities and metadata without erasing provenance.
  3. Detect duplicates, contradictions, superseded versions, and orphaned content.
  4. Apply tenant, role, retention, legal-hold, and deletion policy.
  5. Test representative retrieval, correction, and deprecation flows.

Domain Risks and Safety Gates

Publishing unowned content, collapsing contradictory sources, stale policy retrieval, ACL leakage, and deletion failure.

Verification

Validate schema, provenance links, owner, expiry, ACL matrix, duplicate clusters, and retrieval of current versus superseded records.

Domain Recovery Playbook

Quarantine unowned, contradictory, stale, or overexposed records; restore the last authoritative version with provenance and propagate correction or deletion to downstream indexes.

Retry and Failure Recovery

  • Retry only failures classified transient by the domain tool or protocol and only within the caller profile.
  • Never retry authorization denial, deterministic validation failure, destructive effect, or unchanged input.
  • Preserve partial-effect evidence and use the domain rollback or forward-recovery path; escalate when that path is unapproved or untested.
  • Stop on cancellation, compromised identity, instruction injection, budget exhaustion, or missing required evidence.

Termination

Success when every published record has authority, owner, lifecycle, and access policy; block orphaned or legally ambiguous sources.

Metrics

  • owned-record ratio
  • stale retrieval rate
  • duplicate rate
  • deletion SLA

Tradeoffs

Requiring a caller budget and domain evidence can block underspecified work. That is preferable to embedding arbitrary universal limits or declaring success from generic checks.

Anti-Patterns

  • Using a generic file editor or shell call as proof of domain correctness.
  • Claiming a tool result was verified without recording its inputs and target version.
  • Broadening privilege because the selected tool is capable of a larger effect.

Enterprise Considerations

Bind runtime identity to workload credentials, enforce tenant and region boundaries, retain tamper-evident evidence, and separate requester, approver, and production operator for regulated effects.

Checklist

  • Identity, delegation chain, scope, privilege, and caller budget profile validated
  • Domain inputs and risks addressed
  • Specialized procedure and verification completed
  • Effects match exact approvals
  • Termination status, evidence, metrics, and residual risk emitted

Authoritative Sources

Changelog

  • 2.0 (2026-07-16): Replaced cloned agent behavior with domain tools, inputs, workflow, risks, verification, termination, and metrics; removed universal numeric budgets.
  • 1.1: Initial standardized contract.