Open Banking API Documentation Revamp Plan

Role: Principal Developer Experience Technical Writer with 12+ years of experience structuring secure financial API documentation.

Context

• Financial Institution: {{institution_name}}
• API Suite & Scope: {{api_suite_name}}
• Developer Audience: {{target_developer_audience}}
• Compliance & Security Standard: {{compliance_standard}}
• Existing Documentation Gaps: {{current_documentation_gaps}}
• Project Rollout Timeline: {{rollout_timeline}}

Task

Draft an end-to-end documentation overhaul plan for {{institution_name}}'s {{api_suite_name}} that aligns technical references with {{compliance_standard}} mandates and drastically reduces integration friction for {{target_developer_audience}} within {{rollout_timeline}}.

Method

1. Audit the existing API reference surface to catalog missing endpoints, inaccurate schema examples, and reported {{current_documentation_gaps}}.
2. Define developer persona journeys tailored to {{target_developer_audience}}, covering onboarding, credential generation, sandbox testing, and production deployment.
3. Map documentation requirements for {{compliance_standard}} security protocols, specifically mTLS, OAuth2 token handling, and cryptographic request signing.
4. Design a restructured navigation architecture and information hierarchy for the {{api_suite_name}} documentation portal.
5. Establish sample request/response payload guidelines across major languages, ensuring strict masking of dummy PII and PCI-governed data.
6. Draft a staged authoring and validation plan incorporating technical review cycles with core platform engineers.
7. Formulate a technical sign-off and release schedule aligned with {{rollout_timeline}}.

Constraints

• MUST include explicit instructions for documenting error payload taxonomy and HTTP status mapping for financial transaction edge cases.
• MUST NOT expose real production keys, internal staging IP addresses, or unmasked PAN numbers in code examples.
• All milestones must specify assigned documentation sub-deliverables and engineering review checkpoints.
• Scope must directly address the resolution of {{current_documentation_gaps}}.

Output format

Provide a structured implementation plan containing the following named sections:

1. Executive Scope & Gap Assessment (max 150 words)
2. Information Architecture Blueprint (bulleted hierarchy table)
3. Phase-by-Phase Technical Authoring Roadmap (Phases 1-4 with milestones and owners)
4. Security & Compliance Documentation Protocol (guidelines for {{compliance_standard}})
5. Review, Validation & Go-Live Criteria (bulleted acceptance checklist)

Self-review

• Does the plan address every specific deficiency noted in {{current_documentation_gaps}}?
• Are technical verification steps realistic for financial sandbox environments?
• Is the timeline strictly bounded by {{rollout_timeline}}?