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Secure BEAM sandbox runtime for LLM code mode and MCP aggregation. Run concurrent LLM/tool clients safely while agents orchestrate approved tools, call upstream MCP/OpenAPI servers, and transform data.

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priv/prompts/reference.md 

# PTC-Lisp Language Reference



Core language reference for PTC-Lisp. Optional — included by default, can be omitted for capable models.



<!-- version: 1 -->

<!-- date: 2026-03-23 -->

<!-- changes: Renamed from lisp-base.md as part of 2-axis prompt refactor -->



<!-- PTC_PROMPT_START -->



<java_interop>

Minimal Java interop for Date/Time and string methods only:

- `(java.util.Date.)` / `(java.util.Date. arg)` — current time or construct from millis/ISO-8601 string

- `(java.time.LocalDate/parse "2026-01-15")` — parse ISO-8601 date

- `(.getTime date)` — Unix millis from Date object

- `(System/currentTimeMillis)` — current time in millis

- String methods: `.contains`, `.indexOf`, `.lastIndexOf`, `.toLowerCase`, `.toUpperCase`, `.startsWith`, `.endsWith`



No other Java interop is supported.

</java_interop>



<restrictions>

- Comments (`;`) MUST be on their own line, never inline — `;` mid-line breaks operators like `<=` and `->>`

- NOT available: lazy-seq, atom, ref, future, promise, try/catch/throw, dotimes, iterate, repeat, cycle, transients, metadata, namespaces, macros, general Java interop, I/O (except println)

- No mutable state: `atom`, `swap!`, `reset!`, `@deref` are NOT supported. Use `reduce` or `map`/`filter` instead of `doseq` + `swap!` to accumulate results.

</restrictions>



<!-- PTC_PROMPT_END -->