Planning checklist
API & Integration Readiness Checklist
A discovery checklist covering consumers, contracts, identity, errors, retries, versioning, observability and ownership for APIs and integrations.
Published by SpeedInno · Material review 15 August 2026
Quick checklist
Review these items first. Marking an item is not proof of readiness; retain the decision, evidence and accountable owner described in the detailed guidance below.
- Consumers and ownersName clients, partner systems, responsible teams and the decisions each operation supports.
- Schemas and semanticsDefine identifiers, fields, units, state changes and the authoritative owner of each record.
- Identity and permissionsSeparate authentication from action- and resource-level authorization.
- Performance and volumeRecord evidence-based latency, throughput, payload and availability needs without inventing universal targets.
- Errors and retriesDefine error classes, retryability, backoff, idempotency and duplicate handling.
- VersioningChoose compatibility, deprecation and consumer-migration rules.
- ObservabilityCorrelate requests, failures and background work without logging secrets or unnecessary personal data.
- Operational ownershipAssign credentials, deployments, incidents, documentation and partner-communication responsibilities.
How to use this resource
- 1.Work through it with the people who own the workflow, data and release decision.
- 2.Attach evidence or a named open question to every material answer.
- 3.Separate confirmed facts, assumptions, risks and decisions that require approval.
- 4.Finish with an owner, next decision and review date, not a checked document only.
Use four decision states, not a misleading percentage score
Confirmed
Evidence exists and the accountable owner accepts it.
Assumption
A working belief is recorded with a validation action and date.
Risk
The uncertainty can materially change scope, safety, cost or release.
Not applicable
The rationale is explicit and has been reviewed; it is not simply unanswered.
Contract discovery
Start with consumers and business operations rather than an endpoint list.
Consumers and owners
Name clients, partner systems, responsible teams and the decisions each operation supports.
Questions to resolve
- What is the verified current state of consumers and owners, and which source supports it?
- What must be true at the next approval or release point, and what is explicitly outside the decision?
- Which exception, dependency or failure condition could invalidate the current answer?
- Who can approve the answer, who performs the work and who responds when it fails?
Evidence to retain
- A current-state artifact, observation or system record, not recollection alone.
- The selected decision, alternatives considered and the reason for the trade-off.
- An accountable owner, dependency owner and review or expiry date.
- Observable acceptance evidence and a recovery or escalation path where failure matters.
Schemas and semantics
Define identifiers, fields, units, state changes and the authoritative owner of each record.
Questions to resolve
- What is the verified current state of schemas and semantics, and which source supports it?
- What must be true at the next approval or release point, and what is explicitly outside the decision?
- Which exception, dependency or failure condition could invalidate the current answer?
- Who can approve the answer, who performs the work and who responds when it fails?
Evidence to retain
- A current-state artifact, observation or system record, not recollection alone.
- The selected decision, alternatives considered and the reason for the trade-off.
- An accountable owner, dependency owner and review or expiry date.
- Observable acceptance evidence and a recovery or escalation path where failure matters.
Identity and permissions
Separate authentication from action- and resource-level authorization.
Questions to resolve
- What is the verified current state of identity and permissions, and which source supports it?
- What must be true at the next approval or release point, and what is explicitly outside the decision?
- Which exception, dependency or failure condition could invalidate the current answer?
- Who can approve the answer, who performs the work and who responds when it fails?
Evidence to retain
- A current-state artifact, observation or system record, not recollection alone.
- The selected decision, alternatives considered and the reason for the trade-off.
- An accountable owner, dependency owner and review or expiry date.
- Observable acceptance evidence and a recovery or escalation path where failure matters.
Performance and volume
Record evidence-based latency, throughput, payload and availability needs without inventing universal targets.
Questions to resolve
- What is the verified current state of performance and volume, and which source supports it?
- What must be true at the next approval or release point, and what is explicitly outside the decision?
- Which exception, dependency or failure condition could invalidate the current answer?
- Who can approve the answer, who performs the work and who responds when it fails?
Evidence to retain
- A current-state artifact, observation or system record, not recollection alone.
- The selected decision, alternatives considered and the reason for the trade-off.
- An accountable owner, dependency owner and review or expiry date.
- Observable acceptance evidence and a recovery or escalation path where failure matters.
Failure and evolution
A reliable contract explains what happens when systems disagree or are unavailable.
Errors and retries
Define error classes, retryability, backoff, idempotency and duplicate handling.
Questions to resolve
- What is the verified current state of errors and retries, and which source supports it?
- What must be true at the next approval or release point, and what is explicitly outside the decision?
- Which exception, dependency or failure condition could invalidate the current answer?
- Who can approve the answer, who performs the work and who responds when it fails?
Evidence to retain
- A current-state artifact, observation or system record, not recollection alone.
- The selected decision, alternatives considered and the reason for the trade-off.
- An accountable owner, dependency owner and review or expiry date.
- Observable acceptance evidence and a recovery or escalation path where failure matters.
Versioning
Choose compatibility, deprecation and consumer-migration rules.
Questions to resolve
- What is the verified current state of versioning, and which source supports it?
- What must be true at the next approval or release point, and what is explicitly outside the decision?
- Which exception, dependency or failure condition could invalidate the current answer?
- Who can approve the answer, who performs the work and who responds when it fails?
Evidence to retain
- A current-state artifact, observation or system record, not recollection alone.
- The selected decision, alternatives considered and the reason for the trade-off.
- An accountable owner, dependency owner and review or expiry date.
- Observable acceptance evidence and a recovery or escalation path where failure matters.
Observability
Correlate requests, failures and background work without logging secrets or unnecessary personal data.
Questions to resolve
- What is the verified current state of observability, and which source supports it?
- What must be true at the next approval or release point, and what is explicitly outside the decision?
- Which exception, dependency or failure condition could invalidate the current answer?
- Who can approve the answer, who performs the work and who responds when it fails?
Evidence to retain
- A current-state artifact, observation or system record, not recollection alone.
- The selected decision, alternatives considered and the reason for the trade-off.
- An accountable owner, dependency owner and review or expiry date.
- Observable acceptance evidence and a recovery or escalation path where failure matters.
Operational ownership
Assign credentials, deployments, incidents, documentation and partner-communication responsibilities.
Questions to resolve
- What is the verified current state of operational ownership, and which source supports it?
- What must be true at the next approval or release point, and what is explicitly outside the decision?
- Which exception, dependency or failure condition could invalidate the current answer?
- Who can approve the answer, who performs the work and who responds when it fails?
Evidence to retain
- A current-state artifact, observation or system record, not recollection alone.
- The selected decision, alternatives considered and the reason for the trade-off.
- An accountable owner, dependency owner and review or expiry date.
- Observable acceptance evidence and a recovery or escalation path where failure matters.
How to turn the checklist into an implementation decision
1. Establish the baseline
Record what exists, how it was observed and where evidence is incomplete. Keep reported behavior separate from reproduced behavior. This prevents the future design from treating assumptions or one person’s workaround as an approved requirement.
2. Define the target and boundary
Describe the capability or decision the next phase must enable, the users and records it covers, and the adjacent work it deliberately does not replace. A clear exclusion is useful only when its operational consequence and owner are understood.
3. Resolve the highest-consequence uncertainty
Prioritise questions that can change architecture, data purpose, security, migration, acceptance, commercial scope or launch readiness. Test or decide those before polishing lower-risk screens and convenience features.
4. Create traceable delivery evidence
Link each accepted requirement to its decision source, implementation boundary, test or review method and release owner. When the requirement changes, update the connected artifacts instead of leaving contradictory copies in documents, tickets and code.
Expected output
The output should be a reviewable integration contract, failure model, security boundary and ownership plan, not only generated API documentation.
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