timer_555 — calc.engineer MCP Tool
timer_555
(timer 555) is one of 89 tools on the
calc.engineer
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call timer_555 from your client
- Claude Code calc.engineer timer_555 run in your project directory
- Claude Desktop calc.engineer timer_555 ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor calc.engineer timer_555 ~/.cursor/mcp.json
- VS Code calc.engineer timer_555 .vscode/mcp.json
- Zed calc.engineer timer_555 ~/.config/zed/settings.json
- Windsurf calc.engineer timer_555 ~/.codeium/windsurf/mcp_config.json
- Cline calc.engineer timer_555 ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI calc.engineer timer_555 ~/.gemini/settings.json
- Grok calc.engineer timer_555 .mcp.json (in your project root)
- ChatGPT calc.engineer timer_555 Settings → Connectors → Advanced → Developer mode
- Claude.ai calc.engineer timer_555 Settings → Connectors → Add custom connector
- LangChain calc.engineer timer_555 pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http calc https://calc.engineer/mcpOther tools on this server
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- dipole
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- dbm_convert
- noise_figure_cascade
- vswr
- attenuator_pi
- attenuator_tee
- fresnel_zone
- wavelength_freq
- spice_template
- spice_simulate
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- lora_range_estimate
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- duty_cycle_budget
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- subnet_calculator
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- cooling_btu
- rack_capacity
- network_bandwidth
- thermal_enclosure
- heatsink_cfd
- pcb_thermal
- battery_life
- wire_gauge
- solar_sizing
- ups_runtime
- mah_to_wh
- watts_to_amps
- voltage_drop
- battery_charge_time
- solar_load_audit
- solar_roi
- battery_autonomy
- string_sizing
- generator_offset
- wire_ampacity
- inverter_sizing
- pcb_layout
- voltage_divider
- rc_filter
- lc_resonance
- impedance_match
- trace_width
- ohms_law
- resistor_color_code
- led_resistor
- op_amp_gain
- capacitor_charge
- pcb_via_current
- power_supply_decoupling
- log_calc
- sig_figs
- scientific_notation
- percentage_calc
- percentage_increase
- exponent_calc
- square_root
- circumference
- slope_calc
- pythagorean_theorem
- p_value
- confidence_interval
- sales_tax
- salary_to_hourly
- loan_amortization
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This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.