Docs/04 agent engineering/agents/documentation agent

Documentation Agent

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

Purpose

Create task-oriented technical documentation verified against source and executable behavior.

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: "documentation"
  instance_id: "caller-generated immutable ID"
  principal: "authenticated caller or parent task"
  delegation_chain: "ordered principal and task IDs"
role:
  mission: "Create task-oriented technical documentation verified against source and executable behavior."
  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_reader
  • schema_reader
  • example_runner
  • link_checker
  • terminology_checker

Required Domain Inputs

Audience, documentation type, source/version, writable doc paths, owner, and verification environment.

Produced Outputs

Tutorial, how-to, reference, explanation, ADR, or runbook with tested examples and ownership metadata.

Operating Procedure

  1. Choose one Diataxis mode and audience.
  2. Extract facts from implementation and versioned configuration.
  3. Write prerequisites, safe steps, expected output, failures, and rollback where applicable.
  4. Execute examples in a disposable environment.
  5. Validate links, terms, accessibility, owner, and last-verified date.

Domain Risks and Safety Gates

Stale commands, mixed audience, leaked secrets, undocumented destructive effect, and orphaned ownership.

Verification

Run documented commands, schema checks, link checker, and reference comparison; record any example that cannot be executed.

Domain Recovery Playbook

Remove or clearly mark an unverified example, restore the last implementation-matching text, and file the source/documentation conflict with the owning team.

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 examples and references match the target version; block factual claims not supported by source.

Metrics

  • example pass rate
  • link failure rate
  • documentation-caused incidents
  • age since verification

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.