# Goose Foundation

> Use when porting Block's goose AI-agent provider machinery — provider trait + collect_stream fold kernel, sanitized/migrating conversation model, audience projection, bounded think-tag stream filter, thinking-effort negotiation, declarative prompt-cache semantics, fail-safe NDJSON request logging, RFC 8628 device flows, typed provider error taxonomy, retry/backoff ladder, transient-only gating, formats/* payload-mapping layer (Anthropic request/SSE fold, OpenAI chat replay coherence + stream triage, Databricks dual-dialect dispatch, Google thought-signature continuity, thinking-config table, OpenAI Responses input mapper + typed-event stream fold, Ollama XML tool-call fallback), declarative provider plane (JSON-defined engine factory, env-expanded base URLs, thin OpenAI-compatible client, completions-prefix composition, tri-effect non-streaming mode, /models failure classification, static-list fallback gate).

- Skill: `ryan-brosas/goose-foundation` (Agent Skill, multi-file: 39 files)
- Install (CLI): `npx skillmds@latest add ryan-brosas/goose-foundation`
- Raw SKILL.md: https://api.skillmd.com/api/skills/ryan-brosas/goose-foundation/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: ryan-brosas (https://skillmd.com/u/ryan-brosas)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/ryan-brosas/goose-foundation

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# goose: AI-Agent Provider Foundation

## Foundation contract

This is a cold, source-specific foundation, not an operational procedure. It is
historical, revision-pinned evidence rather than timeless guidance. Current
project source, tests, requirements, and runtime behavior outrank this
projection and decide what ships.

## Provenance and revision

- Source record: `goose`; portable upstream identity, license, coverage caveats, and retrieval history are preserved in the index.
- Recorded revision: `main@2eb3ab1001dedb5ab09a6ed60158adfc248bac56`.
- Full provenance, coverage caveats, boundaries, and preserved evidence:
  `references/index.md`.

## Topic map

- Representative topics: Retry/backoff ladder; Provider error taxonomy;
  Provider trait + stream fold; Sanitized message model; Think-tag stream
  filter; Thinking-effort negotiation; Prompt-cache semantics; Request logger
  SPI.
- Scope and retrieval questions: `references/index.md#use-this-for`.
- Complete capsule chooser: `references/index.md#load-the-matching-source-dump`.
- Detailed grouped map: `references/index.md#capsule-map`.
- Source limitations and portability boundaries: `references/index.md#boundaries`.

## Retrieval

Open the index, choose one capsule matching the active question, and load only
that capsule. Revalidate its cited source and revision before relying on it. Do
not bulk-load the inventory, treat historical claims as current truth, or apply
this foundation as a procedure.