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## Thinking Path > - Paperclip orchestrates AI agents via adapters (`claude_local`, `codex_local`, etc.) > - Each adapter type has different capabilities — instructions bundles, skill materialization, local JWT — but these were gated by 5 hardcoded type lists scattered across server routes and UI components > - External adapter plugins (e.g. a future `opencode_k8s`) cannot add themselves to those hardcoded lists without patching Paperclip source > - The existing `supportsLocalAgentJwt` field on `ServerAdapterModule` proves the right pattern already exists; it just wasn't applied to the other capability gates > - This pull request replaces the 4 remaining hardcoded lists with declarative capability flags on `ServerAdapterModule`, exposed through the adapter listing API > - The benefit is that external adapter plugins can now declare their own capabilities without any changes to Paperclip source code ## What Changed - **`packages/adapter-utils/src/types.ts`** — added optional capability fields to `ServerAdapterModule`: `supportsInstructionsBundle`, `instructionsPathKey`, `requiresMaterializedRuntimeSkills` - **`server/src/routes/agents.ts`** — replaced `DEFAULT_MANAGED_INSTRUCTIONS_ADAPTER_TYPES` and `ADAPTERS_REQUIRING_MATERIALIZED_RUNTIME_SKILLS` hardcoded sets with capability-aware helper functions that fall back to the legacy sets for adapters that don't set flags - **`server/src/routes/adapters.ts`** — `GET /api/adapters` now includes a `capabilities` object per adapter (all four flags + derived `supportsSkills`) - **`server/src/adapters/registry.ts`** — all built-in adapters (`claude_local`, `codex_local`, `process`, `cursor`) now declare flags explicitly - **`ui/src/adapters/use-adapter-capabilities.ts`** — new hook that fetches adapter capabilities from the API - **`ui/src/pages/AgentDetail.tsx`** — replaced hardcoded `isLocal` allowlist with `capabilities.supportsInstructionsBundle` from the API - **`ui/src/components/AgentConfigForm.tsx`** / **`OnboardingWizard.tsx`** — replaced `NONLOCAL_TYPES` denylist with capability-based checks - **`server/src/__tests__/adapter-registry.test.ts`** / **`adapter-routes.test.ts`** — tests covering flag exposure, undefined-when-unset, and per-adapter values - **`docs/adapters/creating-an-adapter.md`** — new "Capability Flags" section documenting all flags and an example for external plugin authors ## Verification - Run `pnpm test --filter=@paperclip/server -- adapter-registry adapter-routes` — all new tests pass - Run `pnpm test --filter=@paperclip/adapter-utils` — existing tests still pass - Spin up dev server, open an agent with `claude_local` type — instructions bundle tab still visible - Create/open an agent with a non-local type — instructions bundle tab still hidden - Call `GET /api/adapters` and verify each adapter includes a `capabilities` object with the correct flags ## Risks - **Low risk overall** — all new flags are optional with backwards-compatible fallbacks to the existing hardcoded sets; no adapter behaviour changes unless a flag is explicitly set - Adapters that do not declare flags continue to use the legacy lists, so there is no regression risk for built-in adapters - The UI capability hook adds one API call to AgentDetail mount; this is a pre-existing endpoint, so no new latency path is introduced ## Model Used - Provider: Anthropic - Model: Claude Sonnet 4.6 (`claude-sonnet-4-6`) - Context: 200k token context window - Mode: Agentic tool use (code editing, bash, grep, file reads) ## Checklist - [x] I have included a thinking path that traces from project context to this change - [x] I have specified the model used (with version and capability details) - [x] I have run tests locally and they pass - [x] I have added or updated tests where applicable - [ ] If this change affects the UI, I have included before/after screenshots - [x] I have updated relevant documentation to reflect my changes - [x] I have considered and documented any risks above - [x] I will address all Greptile and reviewer comments before requesting merge --------- Co-authored-by: Pawla Abdul (Bot) <pawla@groombook.dev> Co-authored-by: Paperclip <noreply@paperclip.ing>
