compiler-explorer-mcp: Instructions file for Codex

Maintainer Notes

• MCP 2.0's generated outer argument model ignores unknown keys and omits additionalProperties: false. Keep StrictMCPServer.list_tools and call_tool enforcing both the advertised schema and runtime rejection.
• Pydantic may copy nested Page models while constructing an output model. Response-budget trimming must receive pages taken from the final response, not pre-construction local page objects.
• Compiler Explorer libsArr is unrestricted when absent or empty; only a nonempty list restricts valid library IDs or id.version pairs.
• A compile POST may retry only before response headers or on an explicit transient status. Preserve the response_started distinction; post-response stream failures are retryable only for GET metadata.
• CE version endpoints return scalar text, cache-hit fields may use the misspelling retreivedFromCache, and extra virtual .cpp files are not automatically compiled as translation units.
• MCP 2 duplicates structured tool results into pretty-printed text by default, while some clients expose only text content. Mirror small results as bounded compact JSON, use a pointer for large results, and always preserve complete structuredContent.
• Analyzer aggregate status includes every requested tool; the top-level exit code remains the compiler exit code. Compiler/analyzer discovery may normalize separators, but execution resolution stays exact and exact analyzer IDs precede aliases.
• Built-in shortlinks store a direct deterministic sessions ClientState indefinitely; emit libraries as libs[].name/ver, pin resolved exact IDs, and never retry the storage POST after an ambiguous failure.
• Shortlink retrieval is untrusted backend content. Normalize only bounded C++ sessions and safe compiler display state; omit trees, executors, tools, execution/binary flags, and unknown nested JSON with explicit warnings.
• mcp-tools.json is the sanitized repository snapshot of all paginated tools/list pages. Regenerate it with python -m ce_analyzer_mcp.tool_snapshot; CI checks freshness and uses it to verify the installed wheel's tool list.
• compile_cpp.assembly_format="text" projects normalized assembly to strings after sanitization; keep "detailed" as the backward-compatible default and preserve full assembly totals/hashes in both modes.
• Releases are immutable v<project.version> tags. Keep .github/workflows/release.yml on PyPI trusted publishing through the protected pypi environment; build artifacts once, publish them to PyPI, then attach the same files to the GitHub Release. Never add a long-lived PyPI token.