gap-analysis

name	gap-analysis
description	Audit TanStack AI provider adapters for feature parity gaps and outdated model lists. Triggered as /gap-analysis <provider|feature <name>|models|--all>. Produces a dated markdown report under .agent/gap-analysis/. Maintainer tool — does not edit feature-support.ts or model-meta.ts directly.

Gap Analysis — TanStack AI adapter audit

You are auditing TanStack AI's provider adapters against each provider's upstream documentation. This is a maintainer tool. Your only output is a markdown report under .agent/gap-analysis/. Do not edit source files.

Invocation

Args	Scope
<provider> (e.g. openai)	One provider — all four audit dimensions.
feature <feature> (e.g. tts)	One feature row of the matrix across all providers.
models	New-model diff for every provider.
--all	Full sweep (fan out subagents, one per provider).
(none)	Ask the user which scope via AskUserQuestion.

Workflow

1. Parse scope. If missing, AskUserQuestion with the four options above.
2. Load the truth files, then read the per-scope inputs you need:
   • Matrix: testing/e2e/src/lib/feature-support.ts
   • Types: testing/e2e/src/lib/types.ts (Provider + Feature unions, ALL_PROVIDERS, ALL_FEATURES)
   • Adapter index: packages/typescript/ai-<provider>/src/index.ts
   • Model meta: packages/typescript/ai-<provider>/src/model-meta.ts
   • Core types: packages/typescript/ai/src/types.ts (Modality, ContentPart, ToolCall)
3. Research upstream. Use WebFetch against the curated URLs in references/provider-doc-urls.md. When a doc page has moved, fall back to WebSearch. For SDK API surface details use the context7 MCP server (mcp__plugin_context7_context7__resolve-library-id then mcp__plugin_context7_context7__query-docs).
4. Walk the audit dimensions in references/audit-checklist.md:
   1. New models
   2. Cross-adapter feature parity
   3. Untracked features
   4. Capability-flag drift
   5. Telemetry / observability parity (usage tokens, cache/reasoning counts, request ids, logging asymmetry)
5. Fan out for --all: launch one Explore subagent per provider, max 3 in parallel. Each subagent returns the five-dimension findings for its provider; you synthesise into the combined report.
6. Write the report to .agent/gap-analysis/YYYY-MM-DD-<scope>.md using references/report-template.md. Date is today's ISO date. <scope> is openai / feature-tts / models / all.
7. Print the report path and a 5-line summary to the user.

Critical rules

1. Never edit feature-support.ts or any model-meta.ts. The report is read-only — the maintainer applies changes.
2. Always reference line numbers when citing exclusions (e.g., feature-support.ts:57) so the maintainer can jump to them.
3. Distinguish three gap classes in the report:
   • Real gap — upstream supports it, TanStack AI doesn't, no exclusion comment.
   • Tested gap — TanStack AI doesn't list it but there's an exclusion comment in feature-support.ts (e.g., aimock format limitation). Not actionable code-wise; surface in "Out-of-scope" section.
   • Stale capability flag — model-meta.ts declares a capability the model no longer has, or omits one it now has.
4. Cite sources. Every claim "upstream supports X" must link the upstream doc page you read. No claims from training data.
5. Use today's date from the system context (currentDate). Never invent.
6. Quote the relevant snippet from feature-support.ts when flagging a parity gap, so the report is self-contained.

Known providers

openai, anthropic, gemini, ollama, grok, groq, openrouter, fal (media-only), elevenlabs (TTS-only). The feature matrix tracks the first seven; fal and elevenlabs only appear in model/media audits.

Known features (19)

Canonical list is ALL_FEATURES in testing/e2e/src/lib/types.ts — always re-read it; this list is a snapshot:

chat, one-shot-text, reasoning, multi-turn, tool-calling, parallel-tool-calls, tool-approval, text-tool-text, structured-output, structured-output-stream, agentic-structured, multimodal-image, multimodal-structured, summarize, summarize-stream, image-gen, tts, transcription, video-gen.

Verification before finishing

Before printing the summary:

• Report file exists and is non-empty.
• git status shows only new files under .agent/gap-analysis/ — nothing under packages/ or testing/ should have been modified. Run git status and confirm.
• Every "real gap" entry has an upstream doc URL.