---
summary: "Stop slicing conditions in format() for search_studies and find_eligible; narrow test-side types under strict tsconfig"
breaking: false
---

# 2.3.1 — 2026-04-21

### Fixed

- **`clinicaltrials_search_studies` and `clinicaltrials_find_eligible` condition rendering** — `format()` rendered only the first 2 (search) or 3 (eligible) conditions from `conditionsModule.conditions` and marked the full path as covered in `SEARCH_RENDERED`/`ELIGIBLE_RENDERED`, so the overflow helper also skipped them. Conditions beyond the slice disappeared from `content[]` with no "+N more" signal. Live reproducer NCT05956821 showed 8 conditions in `structuredContent` but only 2 in `content[]`. Dropped the slice; both tools now render all conditions with `.join(', ')`, matching the style already used in `get_study_record`. Closes #29.

### Chores

- **Test-side type narrowing** — Eliminated 249 pre-existing `tsc` errors in `tests/**/*.test.ts` that surfaced under the framework's strict `noUncheckedIndexedAccess` + `exactOptionalPropertyTypes` tsconfig. Narrowed optional framework attributes (`tool.input`, `resource.params`, `prompt.args`) via local `!` bindings; cast `ContentBlock[]` indexed access to a text-shaped type at call sites; added a typed `firstMessage()` helper for the prompt test; switched `makeStudy()` to conditional-spread for `resultsSection`. No runtime semantics changed; `bun run test` remains 262/262 passing.