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Merged
philschmid merged 4 commits into from
Jan 23, 2026
Merged

Feature/subcommand architecture #19

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d434663
better subcommands and daemon setup
philschmid Jan 20, 2026
d8fbae7
better cleaning
philschmid Jan 20, 2026
1b74711
v0.3.0 prep
philschmid Jan 22, 2026
c4e5243
fix lint
philschmid Jan 23, 2026
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57 changes: 57 additions & 0 deletions CHANGELOG.md
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# Changelog

## [0.3.0] - 2026-01-22

### Added

- **Server Instructions Support** - Display MCP server instructions in output
- `mcp-cli` (list all): Shows first line of instructions per server
- `mcp-cli info <server>`: Shows full instructions under "Instructions:" heading

- **Tool Filtering** - Restrict tools per server via config
- `allowedTools`: Glob patterns for tools to allow (e.g., `["read_*", "list_*"]`)
- `disabledTools`: Glob patterns for tools to exclude (e.g., `["delete_*"]`)
- `disabledTools` takes precedence over `allowedTools`
- Filtering applies globally to all CLI operations (info, grep, call)

- **Connection Daemon** - Lazy-spawn connection pooling
- Per-server daemon keeps MCP connections warm
- 60s idle timeout (configurable via `MCP_DAEMON_TIMEOUT`)
- Automatic config hash invalidation
- `MCP_NO_DAEMON=1` to disable

- **3-Subcommand Architecture** - `info`, `grep`, `call`
- Flexible format support: `server tool` and `server/tool`
- `call` always outputs raw JSON (for piping/scripting)
- `info`/`grep` always output human-readable format

- **Improved Error Messages for LLMs**
- AMBIGUOUS_COMMAND: Shows both `call` and `info` options
- UNKNOWN_SUBCOMMAND: Smart mapping (run→call, list→info, search→grep)
- MISSING_ARGUMENT: Shows available servers list
- INVALID_JSON: Schema hint with example

- **Advanced Chaining Examples** - New documentation section
- Search and read pipelines with jq
- Multi-file processing with loops
- Conditional execution with `jq -e`
- Multi-server aggregation
- Error handling patterns

- **Generate System Instructions Script** - `scripts/generate-system-instructions.ts`

### Changed

- **CLI Command Structure**
- `mcp-cli` (no args) lists all servers
- `mcp-cli info <server>` requires a server argument

- **Grep Output Format**
- Output now uses space-separated format: `<server> <tool> <description>`
- Descriptions are always shown when available
- Pattern now matches tool name only (not server name or description)

### Removed

- **Backward Compatibility Syntax** - `mcp-cli server/tool [args]` now errors with helpful message
- **`--json` and `--raw` options** - Output format now automatic based on command
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