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docs(readme): document libpq env vars for --postgres connections #2390

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docs(readme): document libpq env vars for --postgres connections #2390

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2 changes: 2 additions & 0 deletions README.md
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Expand Up @@ -515,6 +515,7 @@ These are only needed for **headless / CI extraction** (`graphify extract`). Whe
| `AZURE_OPENAI_API_VERSION` | Azure API version override | optional — default `2024-12-01-preview` |
| `AZURE_OPENAI_DEPLOYMENT` or `GRAPHIFY_AZURE_MODEL` | Azure deployment name | optional — default `gpt-4o` |
| `AWS_*` / `~/.aws/credentials` | AWS Bedrock — standard credential chain | `--backend bedrock` (no API key, uses IAM) |
| `PG*` (`PGPASSWORD`, `PGSSLMODE`, …) | Standard libpq connection env vars, read by psycopg | optional — `--postgres` fills unset DSN fields from these |
| `GRAPHIFY_MAX_WORKERS` | AST parallelism thread count | optional — also `--max-workers` flag |
| `GRAPHIFY_MAX_OUTPUT_TOKENS` | Raise output cap for dense corpora | optional — e.g. `32768` for large files |
| `GRAPHIFY_API_TIMEOUT` | Per-call timeout in seconds for HTTP, claude-cli, Anthropic SDK, and Bedrock backends (default: 600) | optional — also `--api-timeout` flag |
Expand Down Expand Up @@ -732,6 +733,7 @@ graphify extract ./docs --backend claude-cli # route through Claude Code CLI -
graphify extract ./docs --backend azure # Azure OpenAI (set AZURE_OPENAI_API_KEY + AZURE_OPENAI_ENDPOINT)
graphify extract ./docs --max-workers 16 # AST parallelism (also GRAPHIFY_MAX_WORKERS)
graphify extract --postgres "postgresql://user:pass@host/db" # introspect live PostgreSQL schema directly
graphify extract --postgres "postgresql://user@host/db?sslmode=require" # password-free: libpq env vars (PGPASSWORD, PGSSLROOTCERT, ~/.pgpass) still apply
graphify extract ./my-workspace --cargo # introspect Rust Cargo workspace dependencies directly
graphify extract ./docs --token-budget 30000 # smaller semantic chunks for local/small models
graphify extract ./docs --max-concurrency 2 # fewer parallel LLM calls (useful for local inference)
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