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BlockWerk

R0· no sign-in

Build, run and analyse block-diagram simulations: PID, Bode, FFT, optimisation and code export.

v1.1.2 · active · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality85good
Trust82of 100
Uptime, 30 days95%
Latency p50321 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "blockwerk": {
      "type": "http",
      "url": "https://blockwerk-mcp-worker.blockwerk.workers.dev/",
      "headers": {
        "Authorization": "Bearer ${BLOCKWERK_TOKEN}"
      }
    }
  }
}
claude mcp add --transport http blockwerk https://blockwerk-mcp-worker.blockwerk.workers.dev/ --header "Authorization: Bearer ${BLOCKWERK_TOKEN}"
[mcp_servers.blockwerk]
url = "https://blockwerk-mcp-worker.blockwerk.workers.dev/"
bearer_token_env_var = "BLOCKWERK_TOKEN"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "blockwerk": {
      "type": "remote",
      "url": "https://blockwerk-mcp-worker.blockwerk.workers.dev/",
      "enabled": true,
      "headers": {
        "Authorization": "Bearer {env:BLOCKWERK_TOKEN}"
      }
    }
  }
}
{
  "mcpServers": {
    "blockwerk": {
      "type": "http",
      "url": "https://blockwerk-mcp-worker.blockwerk.workers.dev/",
      "headers": {
        "Authorization": "Bearer ${BLOCKWERK_TOKEN}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=blockwerk&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vYmxvY2t3ZXJrLW1jcC13b3JrZXIuYmxvY2t3ZXJrLndvcmtlcnMuZGV2LyIsImhlYWRlcnMiOnsiQXV0aG9yaXphdGlvbiI6IkJlYXJlciAke0JMT0NLV0VSS19UT0tFTn0ifX0%3D"
}
{
  "servers": {
    "blockwerk": {
      "type": "http",
      "url": "https://blockwerk-mcp-worker.blockwerk.workers.dev/",
      "headers": {
        "Authorization": "Bearer ${BLOCKWERK_TOKEN}"
      }
    }
  }
}
{
  "mcpServers": {
    "blockwerk": {
      "httpUrl": "https://blockwerk-mcp-worker.blockwerk.workers.dev/",
      "headers": {
        "Authorization": "Bearer ${BLOCKWERK_TOKEN}"
      }
    }
  }
}
extensions:
  "blockwerk":
    enabled: true
    name: "blockwerk"
    type: streamable_http
    uri: "https://blockwerk-mcp-worker.blockwerk.workers.dev/"
    headers:
      "Authorization": "Bearer ${BLOCKWERK_TOKEN}"
    timeout: 300

Placeholders to fill from your own secret store: ${BLOCKWERK_TOKEN}. The registry never accepts secret values.

Quality 85 / 100good

protocol75 · weight 25
  • warn
    protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
  • n/a
    protocol.statelessonly applies to 2026-07-28 servers
  • pass
    protocol.transportstreamable HTTP
  • n/a
    protocol.list_ttlonly applies to 2026-07-28 servers
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygiene86 · weight 30
  • pass
    tools.descriptionsevery tool has a description
  • pass
    tools.description_lengthdescriptions are concise
  • pass
    tools.schemasevery tool has an object input schema
  • pass
    tools.annotations42 of 42 tools declare readOnlyHint or destructiveHint
  • fail
    tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: delete_block (idempotentHint); get_architect_memory (destructiveHint, idempotentHint); load_template (idempotentHint); …
  • pass
    tools.token_costabout 6,134 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability100 · weight 15
  • pass
    stability.changesno tool changes in 30 days
  • pass
    stability.rug_pullno tool changed its meaning under the same name
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

42 tools, about 6,134 tokens to load them all · tool set 0cfd9c6c5bf9 · checked 2026-10-20 03:05 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 82 / 100

no-repository
provenance55
liveness98
freshness100
hygiene80

+dns-namespace +website +reachable +uptime-95% +updated-15d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://blockwerk-mcp-worker.blockwerk.workers.dev/ streamable-httpnoneyes95%321 ms2025-11-252026-10-20

Tools (42)

add_blockAdd a new block to the canvas. Returns the new block ID.
analyze_topologyread-onlyAnalyzes the block diagram structure: detects feedback loops, signal paths, and system order.
auto_tune_pidAutomatically tunes a PID controller using the Ziegler-Nichols ultimate cycle method. Finds the ultimate gain (Ku) and oscillation period (Tu) via binary search, then applies ZN formulas. No prior knowledge of the plant required.
batch_commandsdestructiveExecutes multiple canvas manipulation and background job commands in a single round-trip. Use "handle" strings to refer to blocks added earlier in the same batch. When adding TextNote annotations, set "anchors" to the handles/IDs of the described blocks so auto-layout keeps each note next to them.
calculate_metricsread-onlyCalculates step response metrics from signal data: rise time, settling time, overshoot percentage, and steady-state error.
cancel_jobCancel a running background job.
clear_canvasdestructiveRemove all blocks and connections from the canvas. This is a destructive action that asks the user for approval in the BlockWerk tab.
connect_blocksConnect an output port of one block to an input port of another. Automatically resolves common port aliases (e.g., "in" -> "signal" for uPlotDisplay, "in" -> "error" for PIDController, "+" / "-" for Subtraction).
delete_blockdestructiveDelete a block and all its connections from the canvas. This is a destructive action that asks the user for approval in the BlockWerk tab.
describe_canvasread-onlyReturns a structured description of all blocks and connections currently on the canvas. Set "compact" to true for a token-efficient summary.
evaluate_spec_maskread-onlyEvaluates signal data against automated design specifications and tolerance corridors (rise time, settling time, overshoot %, steady-state error, min/max limits).
explain_simulationread-onlyAnalyze the last completed simulation and return a structured diagnosis: signal anomalies (NaN, divergence, oscillation), solver health (rejection rate, efficiency), algebraic loops, and optional stability margins. Returns JSON with severity-tagged findings and actionable suggestions.
export_diagramread-onlyExports the current canvas project as a complete BlockWerk JSON string.
generate_coderead-onlyGenerates standalone production code (C++, Python, Rust) from the current canvas diagram. Returns structured code files, interfaces (inputs/outputs), execution order, and diagnostics.
get_ai_historyread-onlyReturns the list of recent canvas operations performed by the AI, showing what can be undone.
get_analysis_measurementsread-onlyRetrieves the currently active pinned measurements and their computed values across plotted signals in the Analysis panel.
get_architect_memoryread-onlyReturns the persistent memory object of the Architect.
get_available_blocksread-onlyReturns the block types in the library with their descriptions, configurable parameters, and exact input/output port IDs. Without a filter it returns a compact list of all types; with a list of type IDs it returns full details for those types. Example port IDs: Step out "out"; Sum in "in", out "out"; Gain in "in", out "out"; PIDController in "error","reset", out "out"; uPlotDisplay in "signal". Common aliases (e.g. "in" for PID error, "in" for uPlotDisplay signal, "+" / "-" for Subtraction) are resolved automatically.
get_bode_dataread-onlyComputes magnitude and phase frequency response (Bode data) between two blocks. Traces path backwards from outputBlockId. Returns analytic response if the path contains only linear blocks, otherwise runs numerical sweep.
get_canvas_previewread-onlyCaptures a visual screenshot preview of the canvas branded with the official BlockWerk watermark badge and returns the live interactive URL to view and edit the diagram online.
get_engine_statusread-onlyReturns the simulation engine status, including supported solvers, active background jobs, and compilation/WASM capabilities.
get_fft_dataread-onlyComputes FFT (frequency spectrum) of a Scope signal. Returns frequencies and magnitudes.
get_job_statusread-onlyCheck the status and progress of a background job.
get_share_linkread-onlyReturns a link that opens the current diagram on the BlockWerk canvas. The whole project travels compressed inside the URL, so it needs no account and nothing is uploaded. Opening the link in a browser shows the diagram, where the simulation can be run.
get_signal_dataread-onlyReturns time series data from a Scope block output for analysis.
get_templatesread-onlyLists the built-in, verified BlockWerk diagrams: classic control systems (PID loop, cruise control, inverted pendulum), signal processing, electrical and physics models. Each entry gives an id, what the diagram does, its difficulty and the blocks it uses. Returns metadata only; load_template puts a diagram on the canvas by id.
identify_fopdtread-onlyAnalyzes a step response from a plant to identify its First-Order Plus Dead Time (FOPDT) parameters: Gain (K), Time Constant (tau), and Dead Time (theta). Requires a completed simulation with a step input connected to the plant. Returns the calculated parameters.
list_jobsread-onlyList all recent background jobs and their status.
load_diagramdestructiveAtomically replaces the entire canvas with a complete diagram defined as a BlockWerk project JSON string. The JSON has a "blocks" array (each block needs a unique "id" and "type"; "x"/"y"/"params" are optional) and a "connections" array (each connection needs a unique "id" plus "fromBlockId", "fromPortId", "toBlockId", "toPortId"; a missing id fails validation of the whole load). Block types and port ids are listed by get_available_blocks. This is a destructive action that asks the user for approval in the BlockWerk tab.
load_templatedestructiveReplaces the entire canvas with one of the built-in verified diagrams, by id from get_templates. The template carries its topology, parameters and simulation settings. Returns the block and connection counts, the verified simulation settings, and the attribution when the model is based on third-party material. This is a destructive action that asks the user for approval in the BlockWerk tab.
optimize_multi_parameterOptimizes 2–6 parameters simultaneously using Nelder-Mead simplex search, for example Kp, Ki and Kd of a PID controller at once.
optimize_parametersFinds the optimal value for a single parameter using golden-section search. Minimizes IAE (integral absolute error), overshoot, or settling_time within a [min, max] range. Converges in about 10 simulations.
redo_last_ai_actiondestructiveRedoes the last undone canvas modification.
run_simulationTriggers a new simulation run with the current canvas state and settings, refreshing the signal data.
start_optimizationStart a parameter optimization job in the background.
sweep_parameterRuns simulations across a list of values for one parameter, returning control quality metrics (IAE, overshoot, settling_time, steady_state_error) per value. Requires measureBlockId and setpoint.
tidy_layoutAutomatically rearrange all blocks on the canvas into a clean, left-to-right flow.
undo_last_ai_actiondestructiveUndoes the last canvas modification made by the AI (add block, connect, delete, update parameter).
update_architect_memoryUpdates the persistent memory of the Architect. Provide a JSON object with keys to update/merge.
update_paramsUpdate one or more parameters of an existing block.
validate_canvasread-onlyPerforms pre-flight topological and numerical integrity checks on the canvas. Detects unconnected required input ports, isolated blocks, parameter domain anomalies, and direct algebraic feedthrough loops.
validate_engineering_unitsread-onlyChecks the consistency of engineering units across the diagram. Detects incompatible connections and missing units.

Schemas: list_tools.

Similar MCP servers

Official server.json
{
  "name": "tech.blockwerk/mcp",
  "icons": [
    {
      "src": "https://blockwerk.tech/pwa-512x512.png",
      "sizes": [
        "512x512"
      ],
      "mimeType": "image/png"
    }
  ],
  "title": "BlockWerk",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://blockwerk-mcp-worker.blockwerk.workers.dev/",
      "type": "streamable-http",
      "headers": [
        {
          "name": "Authorization",
          "isSecret": true,
          "description": "Optional. 'Bearer <device token>' from the Connect AI panel on blockwerk.tech pairs this connection with your own open tab. Without it you get a private scratch canvas."
        }
      ]
    }
  ],
  "version": "1.1.2",
  "websiteUrl": "https://blockwerk.tech/connect-ai",
  "description": "Build, run and analyse block-diagram simulations: PID, Bode, FFT, optimisation and code export."
}