OceanSphere MCP server

• Registry nameio.oceansphere.engines/equipment-libraryverified in the MCP registry

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

• Stateanswerschecked 2026-11-03
• Tools5
• Server calls itselfoceansphere-engines
• Server version1.0.0
• Protocol version2025-06-18

On 2026-11-03 the server answered initialize and tools/list without a sign-in. First answer in 535 ms.

• Its tools do none of the product's use cases we checked: request a spare part when own suppliers cannot supply it; find vetted specialists for engine overhauls and deck machinery.
• Checked on 2 of the 7 days it takes to judge reliability.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

• INITE MCP scoreafter a weeka score needs 7 daily checks: 2 so far
• What an agent can do with it0 of 2 use cases
• Answeredmeasuring2 of the 7 daily checks it takes to print a share
• Median first answer548 ms
• Space in an agent's context≈ 1,205 tokensthe definitions of all its tools (5), which an agent carries on every turn
• Tool definitionsA · 100 of 100
• Typed results5 of 5 toolsdeclared outputSchema: results come typed, read once

• 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 score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

• search_equipment_models

  Search the OceanSphere equipment library (marine engines, auxiliaries, pumps, deck machinery, navigation and electrical equipment) by model designation, equipment type or keywords; optionally filter by manufacturer, ship_area or category…

• get_equipment_model

  Get one library model (model_ref from a search, or manufacturer + exact designation): category, ship area, page URL, manufacturer datasheet link if any, and the stored technical characteristics. Each value has source_document (label of…

• find_by_manufacturer

  List models of one manufacturer, best-documented first, at most 8 per call and no paging (total_matches shows the size). Narrow with category or ship_area, or use search_equipment_models with a designation to reach a specific model.

• list_ship_areas

  List the ship areas of the library (engine room, deck, electrical, navigation, safety, cargo, HVAC) with model counts.

• list_categories

  List the equipment categories with model counts, optionally for one ship_area. Use the names as category filter.