{ "checker": { "claims": [ { "claim": "Read-only queries run against PostgreSQL and return rows", "command": "", "evidence": "Probe could not complete: MCP response missing for request 1: argv did not answer as a stdio MCP server (a client CLI that talks to servers is kind cli); stderr: {\"time\":\"2026-10-24T04:43:19.454813745Z\",\"level\":\"ERROR\",\"msg\":\"failed to connect to database\",\"error\":\"failed to connect to PostgreSQL: dial tcp [::1]:5432: connect: connection refused\"}\n", "expected": "rows returned including flange", "input": "SELECT name FROM widgets ORDER BY id", "kind": "claim", "outcome": "Probe could not complete: MCP response missing for request 1: argv did not answer as a stdio MCP server (a client CLI that talks to servers is kind cli); stderr: {\"time\":\"2026-10-24T04:43:19.454813745Z\",\"level\":\"ERROR\",\"msg\":\"failed to connect to database\",\"error\":\"failed to connect to PostgreSQL: dial tcp [::1]:5432: connect: connection refused\"}\n", "source": "- **Read-only by design** -- every query is validated before execution; INSERT, UPDATE, DELETE, DROP and other mutating statements are blocked.", "source_checked": true, "source_file": "README.md", "verdict": "blocked" } ], "cycle_checks": [ { "claim": "Scheduled or looping main behavior", "command": "", "evidence": "Inspected README.md, Taskfile.yml, cmd/, internal/, docs/ for cron, scheduling, loops, webhooks, --once or --now; none found. The server is a stdio MCP server that handles tool calls on request, with no periodic product cycle.", "expected": "identify the product trigger", "input": "source inspection", "kind": "cycle", "outcome": "Inspected README.md, Taskfile.yml, cmd/, internal/, docs/ for cron, scheduling, loops, webhooks, --once or --now; none found. The server is a stdio MCP server that handles tool calls on request, with no periodic product cycle.", "source": "repository entry points", "verdict": "yes" } ], "details": { "argv": [ "" ], "blocker": "MCP response missing for request 1: argv did not answer as a stdio MCP server (a client CLI that talks to servers is kind cli); stderr: {\"time\":\"2026-10-24T04:43:16.399250981Z\",\"level\":\"ERROR\",\"msg\":\"failed to connect to database\",\"error\":\"failed to connect to PostgreSQL: dial tcp [::1]:5432: connect: connection refused\"}\n", "kind": "mcp", "working": false }, "evidence_strength": "nothing_checked", "example_checks": [ { "claim": "Repository unit tests run with the documented task test command", "command": " test", "deferred": false, "evidence": ".00s)\n=== RUN TestExtractTempTables\n--- PASS: TestExtractTempTables (0.00s)\n=== RUN TestExtractErrorHandling\n--- PASS: TestExtractErrorHandling (0.00s)\n=== RUN TestExtractValidationAndBusinessRules\n--- PASS: TestExtractValidationAndBusinessRules (0.00s)\n=== RUN TestCycleDetection\n--- PASS: TestCycleDetection (0.00s)\n=== RUN TestUniqueSortedBool\n--- PASS: TestUniqueSortedBool (0.00s)\nPASS\nok \tgithub.com/vinaycharlie01/postgres-mcp-go/internal/postgres\t(cached)\n? \tgithub.com/vinaycharlie01/postgres-mcp-go/pkg/version\t[no test files]\ntask: [test] go test -v -short -timeout=120s ./...", "expected": "Go test packages report PASS", "input": "task test", "kind": "example", "outcome": "command completed successfully", "returncode": 0, "source": "README.md Development section (task test)", "verdict": "yes" } ], "status": "FAIL" }, "deviations": [ "Go was not installed; README requires Go 1.27+. Installed Go 1.27.0 from https://go.dev/dl/go1.27.0.linux-amd64.tar.gz into /usr/local/go.", "Task was not installed; installed with go install github.com/go-task/task/v3/cmd/task@latest (Task 3.54.0).", "No PostgreSQL was present; installed postgresql (16.15) with sudo apt-get install -y postgresql, started cluster 16 main, and created database mcpdemo, role readonly_user, and table widgets.", "Used the README's build-from-source route instead of Homebrew, release binary, or Docker.", "Local DB uses POSTGRES_SSL_MODE=disable because the default is require and the local server has no TLS configured.", "Dropped one candidate claim (blocked DELETE) because the checker marks any isError result as not working; the rejection itself was observed in a manual JSON-RPC session.", "Replay of task test reported cached Go test results; the offline suite passed." ], "fault_owner": null, "main_blocker": "MCP response missing for request 1: argv did not answer as a stdio MCP server (a client CLI that talks to servers is kind cli); stderr: {\"time\":\"2026-10-24T04:43:16.399250981Z\",\"level\":\"ERROR\",\"msg\":\"failed to connect to database\",\"error\":\"failed to connect to PostgreSQL: dial tcp [::1]:5432: connect: connection refused\"}\n", "operation": "Build the postgres-mcp-go binary from source and call its execute_query MCP tool to run a read-only SELECT against a PostgreSQL database.", "operation_scope": "Ubuntu 24.04 x86_64 guest; Go 1.27.0; Task 3.54.0; PostgreSQL 16 on localhost with a read-only role and a sample table; TLS disabled for the local DB (POSTGRES_SSL_MODE=disable). Read-only blocking was observed manually but is not a checker claim because the checker treats rejected results as not working.", "outcome": "blocked", "plain_failure": null, "steps": [ "git init; git remote add origin https://github.com/vinaycharlie01/postgres-mcp-go.git; git fetch --depth 1 origin 6b91c4f66e7f3a538aadac27802615f8b8dfb185; git reset --mixed FETCH_HEAD", "go install github.com/go-task/task/v3/cmd/task@latest", "task build", "task test", "postgres-mcp-go (stdio MCP server, binary at dist/postgres-mcp-go) with POSTGRES_* env vars; MCP tools/call execute_query" ], "stuck_step": "", "suggested_fix": "None for the product. Setup note: the README should state the Go 1.27 and Task prerequisites explicitly for source builds." }