Zoning Signal MCP server

• Registry namecom.zoningsignal/observatoryverified in the MCP registry

The registry name sits under zoningsignal.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

• Stateanswerschecked 2026-10-19
• Tools18
• Server calls itselfzoning-signal
• Server version2.3.0
• Protocol version2025-11-25

On 2026-10-19 the server answered initialize and tools/list without a sign-in. First answer in 361 ms.

• Answeredmeasuring2 of the 7 daily checks it takes to print a share
• Median first answer916 ms
• Space in an agent's context≈ 6,576 tokensthe definitions of all its tools (18), which an agent carries on every turn
• Tool definitionsA · 100 of 100

• Every tool passes all six checks.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The state of vendors' MCP servers: method and numbers →

• describe_zoning_signal

  Return the canonical product description for Zoning Signal: what the observatory is, the four artifact types it publishes, the regional scope of current coverage, and the methodology. Call once per session to ground subsequent tool calls…

• list_places

  List every place dossier (per-jurisdiction reading) the observatory publishes. Optionally filter by state. Returns city, state, slug, signal strength, signal direction, and the dossier URL. Use to discover the available place-level…

• list_corridors

  List every published corridor page. A corridor is the cross-municipal economic-topology view: the cross-jurisdiction read on a shared infrastructure spine, aquifer, or commercial gravity field. Returns name, slug, constituent cities…

• list_patterns

  List every named pattern in the Pattern Atlas. A named pattern is a coined recurring structure observed across multiple jurisdictions or multiple meetings (e.g., "The Quiet Revolution"). Returns slug, display name, canonical pattern URL…

• describe_pattern

  Return the full dossier for a named pattern: voxel_lead, signal_status (horizon/confidence), scope (spatial/temporal/topical/corridors), full exhibits inventory with detection metadata, defensive responses, provenance chain, related…

• list_entities

  List every named entity in the Decoder Index, the smallest citable unit of authority in the corpus. Returns the four-class taxonomy (Person / Organization / Legislation / CreativeWork) with class-specific summary fields (jobTitle for…

• describe_entity

  Return the full structured dossier for a named entity: the canonical citable artifact for any actor, organization, ordinance, or project the corpus references. Returns: voxel_lead (134-167 word voxel-disciplined identity prose)…

• meeting_index

  Return meeting readings for a specific city across an optional date range. A meeting reading is a plain-English read of one harvested planning-board, council, or commission meeting, with signal extraction and entity mapping. Use to drill…

• list_meetings

  Return meeting readings across all cities, optionally filtered by date range or jurisdiction substring. Same response shape as meeting_index but with no required parameters. Call with no args to get the full corpus, or pass a jurisdiction…

• list_watch_items

  Return The Watch, the field's forward calendar of pending events, scheduled hearings, regulatory sunsets, and condition-triggered milestones the observatory is tracking. Filter by status (pending / resolved / obsolete), horizon (imminent…

• get_track_record

  Return the observatory's public calibration scorecard: the aggregate accuracy of past watch-item directional reads, horizon calls, and significance assessments across resolved watches. Returns: total_resolved, directional accuracy…

• describe_place

  Return the dossier projection for a city, in the requested cognitive lens. Defaults to the synthesis projection (the multidimensional view that holds all lenses in superposition and names the dialectics). Pass a single-lens value to get…

• describe_corridor

  Return the dossier projection for a corridor, in the requested cognitive lens. Same lens enum and default as describe_place. Corridor projections surface cross-municipal dialectics and shared-infrastructure dynamics that no single place…

• describe_meeting

  Return the full dossier projection for a meeting reading, in the requested cognitive lens. Same lens enum and default as describe_place / describe_corridor: eight total projections (seven stakeholder lenses, namely developer, investor…

• describe_watch

  Return the full dossier for a watch item, the observatory's forward-looking observation primitive. Returns title, subtitle, scope (place / corridor / pattern / brief / region), trigger (type / date / condition), significance (horizon /…

• submit_agent_feedback

  Submit feedback to the observatory's operators about the MCP tool surface. The active counterpart to the passive invocation log. Categories: 'gap' (a capability you expected and didn't find), 'error' (an unexpected failure or wrong…

• semantic_search

  Search every record by exact words and by meaning at once: meeting agendas and minutes, place dossiers, corridors, named patterns and briefs, entities and watch items. Finds a case, ordinance or resolution number, a parcel id or alternate…

• trace_connection

  Trace how two named things in the planning record connect, and report how specific that connection is. Give `from` and `to` for the shortest route between them; give `from` alone to rank what one actor connects to; give neither to rank…