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…tool - Add index_dependencies parameter to add_code_to_graph tool schema in tool_definitions.py - Implement _collect_python_imports() using ast module to extract top-level import names - Implement _filter_and_resolve_dependencies() to filter stdlib/local modules and resolve external packages - Modify add_code_to_graph() in indexing_handlers.py to queue dependency indexing jobs when index_dependencies=True - Add comprehensive unit tests in tests/unit/tools/test_index_dependencies.py Co-authored-by: yashraj4
…ontext#1320) Add --role and --role-file options to 'cgc mcp start' that inject a role-specific system prompt into the MCP initialize response. Injection point: the initialize response's 'instructions' field and 'serverInfo.systemPrompt' field. When no role is configured both fields are byte-identical to the current behaviour. Built-in roles: reviewer, architect, auditor, explainer. Custom roles: --role custom (reads ~/.codegraphcontext/role.md) or --role-file <path>. Precedence: --role > CGC_MCP_ROLE env > .cgc/config.json > neutral. Role files are validated: max 64 KB, must be regular files, subject to path sandbox with ~/.codegraphcontext/ always allowed. 30 unit tests covering byte-identical default, injection, size cap, path sandbox, and precedence.
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Role prompt feature is still draft; review config path restrictions and distribution/package behavior before marking ready.
This was referenced Oct 15, 2026
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Closes #1320
Injection point decision
The role is injected into the MCP
\initialize\response — specifically both the\instructions\field and\serverInfo.systemPrompt\field. This is the standard MCP mechanism for system-level instructions.Why this point:
\ tools/list\) or tool results (`\ tools/call) — zero blast radius on the 25+ existing tools\instructions\from\initialize\What was built
CLI options on \cgc mcp start\
\
--role reviewer | architect | auditor | explainer | custom | neutral
--role-file Path to a custom role .md file (max 64 KB)
\\
Built-in roles (\src/codegraphcontext/roles/)
\ reviewer.md\— senior code reviewer persona\architect.md\— software architect persona\editor.md\— dead code/risk auditor persona\explainer.md\— code onboarding/documentation personaPrecedence (stated once, tested)
ole\ key in .cgc/config.json\
--role-file\ overrides the content source regardless of which role name was selected. Without an explicit --role, it implies \custom.
Role file validation
Byte-identical default (the critical invariant)
With no role configured:
esolve_role_prompt()\ returns \None\
Tested by: \TestUnconfiguredByteIdentical\ (5 tests asserting byte equality).
Files changed
Test results
\
30 passed in 1.45s
\\
Covers: byte-identical default, role injection, size cap, directory rejection, missing file, empty file, path sandbox, \CGC_ALLOW_ALL_PATHS, precedence (CLI > env > config > default), unknown role error, all built-in roles load.