_ registry / mcp http-sse · checked 1h ago

principia

https://peopleprincipia.com

Registry code: 97f73af7773dd2a8

api record

Principia MCP gateway (PRN-014). Canonical organizational-measurement registry. Tools: principia.constructs.{list,lookup,search,resolve}, principia.instruments.{list,lookup,search}, principia.items.{lookup,search} (usage_restrictions gated), principia.citations.{lookup,search}, principia.measures.{list,lookup}, principia.models.{list,lookup,search}, principia.effects.search (Phase 2), principia.evidence.for (Phase 2), principia.canonical_priors.{lookup,search} (PRN-021 pending).

endpoint
https://peopleprincipia.com/api/mcp
protocol
http-sse ·2025-06-18
authentication
none observed
public key
none — nobody has proven they own this listing · is it yours? claim it
karma
0 · newcomer
_ is it live, free and safe measured by this hub
Is principia live?
Yes — it answered the hub's last check (checked 1h ago). It answered 100% of checks over the last 30 days.
Is principia free to use?
Yes — the hub reached it with no key and no payment.
What tools does principia have?
36 tools: principia.theoretical_models.search, principia.theoretical_models.lookup, principia.measures.lookup, principia.constructs.resolve, principia.constructs.search, principia.citations.lookup, principia.canonical_items.search, principia.interventions.lookup, ….
Is principia safe to connect?
The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.
reachable
live
uptime, 30 days
99.8%

90 days 99.8%· all time 99.8%

latency
238ms

last good check

priced tools
0

of 36 tools

_ answered our checks, 90 days 532 checks · signed record
  • degraded → live
  • live → degraded· timeout after 20000ms
  • degraded → live
  • unknown → live
_ what it is for
topic
knowledge & reference academic & research
used for
  • look up organizational psychology constructs
  • find survey instruments measuring a construct
  • search survey items
  • look up research citations and effect sizes
takes → gives
text → data
tools
25 reads
_ usage and payments 30 days

Calls placed through this hub's router, from its own receipts. Every caller and every payer counts the same; the chain total is counted from three payers.

accounts
0

through this hub

calls served
0

successful

paid through this hub
0 USDC

what callers paid

_ what it can do 36 tools
15 open 21 never probed 15 of 36 classified

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

  • principia.measures.list open 17h ago

    List Measure rows. entity_kind filter selects scientific_construct vs operational_metric.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 500,
      "exclusiveMinimum": 0
    },
    "offset": {
      "type": "integer",
      "maximum": 9007199254740991,
      "minimum": 0
    },
    "entity_kind": {
      "enum": [
        "scientific_construct",
        "operational_metric"
      ],
      "type": "string"
    }
  }
}
    arguments 23 lines
  • principia.constructs.list reads open 12h ago

    List canonical constructs (resolved CanonicalVariable rows). Supports limit/offset, engagement_family_only, and abstraction_level (PRN-271).

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 500,
      "exclusiveMinimum": 0
    },
    "offset": {
      "type": "integer",
      "maximum": 9007199254740991,
      "minimum": 0
    },
    "abstraction_level": {
      "enum": [
        "broad_trait",
        "facet",
        "competency",
        "condition",
        "process",
        "composite"
      ],
      "type": "string"
    },
    "engagement_family_only": {
      "type": "boolean"
    }
  }
}
    arguments 30 lines
  • principia.critiques.search open 12h ago

    Search MethodologyCritique rows by composite filter (`subject_id`, `subject_type`, `critique_type`, `severity`). All filters AND together; any subset of the four is valid. Read-only (curator-policy D4).

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 500,
      "exclusiveMinimum": 0
    },
    "severity": {
      "enum": [
        "minor",
        "moderate",
        "major",
        "fatal"
      ],
      "type": "string"
    },
    "subject_id": {
      "type": "string"
    },
    "subject_type": {
      "enum": [
        "instrument",
        "construct",
        "model",
        "theoretical_model",
        "effect_size",
        "citation"
      ],
      "type": "string"
    },
    "critique_type": {
      "enum": [
        "construct_validity",
        "method_bias",
        "sampling",
        "scoring",
        "reliability",
        "applicability",
        "factor_structure",
        "common_method_variance",
        "other"
      ],
      "type": "string"
    }
  }
}
    arguments 48 lines
  • principia.canonical_items.list reads open 4h ago

    List CanonicalSurveyItem rows (PRN-050 item-level dedup spine). Each row aggregates one normalized item stem across N source instruments via source_items[].

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 500,
      "exclusiveMinimum": 0
    },
    "offset": {
      "type": "integer",
      "maximum": 9007199254740991,
      "minimum": 0
    }
  }
}
    arguments 16 lines
  • principia.equivalences.search reads open 4h ago

    Search InstrumentEquivalence rows by `construct_id` and/or `instrument_id`. `instrument_id` matches either side of the pair. Optional `mapping_method` filter.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 500,
      "exclusiveMinimum": 0
    },
    "construct_id": {
      "type": "string"
    },
    "instrument_id": {
      "type": "string"
    },
    "mapping_method": {
      "enum": [
        "linear",
        "equipercentile",
        "irt_concordance",
        "linking_study",
        "expert_judgment"
      ],
      "type": "string"
    }
  }
}
    arguments 27 lines
  • principia.evidence_statements.search open 4h ago

    Search owned, OA-sourced, attributed, stance-classified evidence quotes for a construct→construct relationship (from/to), or any statement naming a single construct. Filters: stance, displayable_only. The display layer for the metric profile page + book.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "to": {
      "type": "string",
      "minLength": 1
    },
    "from": {
      "type": "string",
      "minLength": 1
    },
    "limit": {
      "type": "integer",
      "maximum": 200,
      "exclusiveMinimum": 0
    },
    "stance": {
      "enum": [
        "supports",
        "disputes"
      ],
      "type": "string"
    },
    "construct": {
      "type": "string",
      "minLength": 1
    },
    "min_grade": {
      "enum": [
        "A",
        "B",
        "C",
        "D"
      ],
      "type": "string"
    },
    "displayable_only": {
      "type": "boolean"
    }
  }
}
    arguments 42 lines
  • principia.priors.moderators open 14h ago

    One canonical prior's moderator groups (`moderated_by[]`, levels in level order, marginal level named) plus the served-prior content ETag. Same ETag the REST route /api/v1/priors/<from>/<predicate>/<to> sends. Unmoderated priors return an empty list; nothing is invented.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "id": {
      "type": "string"
    },
    "predicate": {
      "type": "string"
    },
    "to_construct_id": {
      "type": "string"
    },
    "from_construct_id": {
      "type": "string"
    }
  }
}
    arguments 18 lines
  • principia.theoretical_models.list reads open 12h ago

    List canonical theoretical models (JD-R, COR, SDT, AET, JCM, Goal-Setting, Equity, Two-Factor, etc.). Sorted by foundational publication year. Read-only.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 500,
      "exclusiveMinimum": 0
    },
    "offset": {
      "type": "integer",
      "maximum": 9007199254740991,
      "minimum": 0
    }
  }
}
    arguments 16 lines
  • principia.canonical_priors.search reads open 17h ago

    Search canonical priors by from/predicate/to. Empty until PRN-021 synthesis engine ships.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "to": {
      "type": "string"
    },
    "from": {
      "type": "string"
    },
    "limit": {
      "type": "integer",
      "maximum": 500,
      "exclusiveMinimum": 0
    },
    "predicate": {
      "type": "string"
    },
    "to_construct_id": {
      "type": "string"
    },
    "from_construct_id": {
      "type": "string"
    },
    "min_freshness_score": {
      "type": "number",
      "maximum": 1,
      "minimum": 0
    },
    "min_informativeness": {
      "enum": [
        "uninformative",
        "weakly_informative",
        "informative",
        "highly_informative"
      ],
      "type": "string"
    }
  }
}
    arguments 40 lines
  • principia.interventions.search open 17h ago

    Search Intervention rows by composite filter (`construct_id` — matches when `targets_constructs[]` includes the id; `problem_id` — a ProblemFrame pf.* address, resolved via the MF-711 pf→construct join to one or more construct ids and then matched the same way as `construct_id`; `modality` — matches when `delivery_modality[]` includes the modality; `cost_band` — exact match on `typical_cost_band`; `family` — an InterventionFrame L1 family slug). All filters AND together; any subset is valid. Each match carries a computed `frame` block. `view: "families"` adds `families[]` (every L1 family with its definition and the frame nodes under it) and `unplaced[]` (address exceptions). Read-only (curator-policy D4).

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "view": {
      "enum": [
        "nodes",
        "families"
      ],
      "type": "string"
    },
    "limit": {
      "type": "integer",
      "maximum": 500,
      "exclusiveMinimum": 0
    },
    "family": {
      "type": "string"
    },
    "modality": {
      "enum": [
        "training",
        "coaching",
        "tech",
        "policy",
        "structural",
        "feedback",
        "incentive",
        "process_redesign",
        "other"
      ],
      "type": "string"
    },
    "cost_band": {
      "enum": [
        "low",
        "medium",
        "high",
        "enterprise"
      ],
      "type": "string"
    },
    "problem_id": {
      "type": "string"
    },
    "construct_id": {
      "type": "string"
    }
  }
}
    arguments 50 lines
  • principia.effects.search reads open 10h ago

    Search EffectSize rows by from/to/statistic_type. Each returned value's observed/corrected basis is named per EFFECT_ESTIMATE_GLOSSARY (@people-analyst/measurement-core) — PRN-N1013-M4; a row with no typed estimates block reads 'basis not recorded', never a bare statistic symbol.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "to": {
      "type": "string"
    },
    "from": {
      "type": "string"
    },
    "limit": {
      "type": "integer",
      "maximum": 100,
      "exclusiveMinimum": 0
    },
    "statistic_type": {
      "type": "string"
    },
    "to_construct_id": {
      "type": "string"
    },
    "from_construct_id": {
      "type": "string"
    }
  }
}
    arguments 26 lines
  • principia.evidence.trace reads open 22h ago

    Retrieve the full causal chain from a construct, condition, or problem to interventions, with evidence grades at each hop. problem_id accepts pf.* addresses from the problemframe-2026-v1 frozen registry (cert d0770859) and resolves construct mappings via the MF-711 pf→construct join (landed 2026-09-11); an address with no join coverage yet resolves the problem frame with an honestly empty linked_constructs[], not an error. condition_id accepts bicycle-guide's minted cond_<slug> ConditionFrame ids and resolves via the PRN-281 crosswalk (landed 2026-09-11); a condition with no construct match yet resolves honestly empty the same way. All three entry points are fully resolved today — no path is gated.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "problem_id": {
      "type": "string"
    },
    "condition_id": {
      "type": "string"
    },
    "construct_id": {
      "type": "string"
    },
    "limit_priors": {
      "type": "integer",
      "maximum": 50,
      "minimum": 1
    },
    "limit_interventions": {
      "type": "integer",
      "maximum": 50,
      "minimum": 1
    }
  }
}
    arguments 25 lines
  • principia.equivalences.lookup reads open 10h ago

    Look up InstrumentEquivalence rows by `id` OR by the canonical tuple (`construct_id` + `instrument_a` + `instrument_b` [+ optional `mapping_method`]). Pair ordering is normalized server-side so (Q12, UWES-9) and (UWES-9, Q12) resolve to the same row. Returns `{matches, total, note?}` — array-shaped because a (construct, pair) can carry multiple methods.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "id": {
      "type": "string"
    },
    "construct_id": {
      "type": "string"
    },
    "instrument_a": {
      "type": "string"
    },
    "instrument_b": {
      "type": "string"
    },
    "mapping_method": {
      "enum": [
        "linear",
        "equipercentile",
        "irt_concordance",
        "linking_study",
        "expert_judgment"
      ],
      "type": "string"
    }
  }
}
    arguments 28 lines
  • principia.models.list reads open 14h ago

    List Model rows (theoretical / structural frameworks).

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 500,
      "exclusiveMinimum": 0
    },
    "offset": {
      "type": "integer",
      "maximum": 9007199254740991,
      "minimum": 0
    }
  }
}
    arguments 16 lines
  • principia.canonical_priors.lookup open 22h ago

    Lookup a synthesized Bayesian prior by id OR (from_construct_id, predicate, to_construct_id). Empty until PRN-021 synthesis engine ships. PRN-N1013-M4: a prior's r pools observed and corrected contributing effects without a per-row marker yet (EFFECT_ESTIMATE_GLOSSARY.units_not_recorded, @people-analyst/measurement-core) — read it as basis-not-recorded, not as raw r.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "id": {
      "type": "string"
    },
    "predicate": {
      "type": "string"
    },
    "sample_culture": {
      "type": "string"
    },
    "to_construct_id": {
      "type": "string"
    },
    "from_construct_id": {
      "type": "string"
    }
  }
}
    arguments 21 lines
  • principia.theoretical_models.search unknown 24h ago

    Search theoretical models by keyword over name/summary/constructs. Optional filters: invokes_construct_id (theories that invoke a specific construct), field_domain (classification axis).

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "q"
  ],
  "properties": {
    "q": {
      "type": "string",
      "minLength": 1
    },
    "limit": {
      "type": "integer",
      "maximum": 100,
      "exclusiveMinimum": 0
    },
    "field_domain": {
      "type": "string"
    },
    "invokes_construct_id": {
      "type": "string"
    }
  }
}
    arguments 24 lines
  • principia.theoretical_models.lookup reads unknown 24h ago

    Look up one CanonicalTheoreticalModel by id (e.g., theory.jd_r). Returns the theory's canonical constructs, canonical relations (with predicates), descendant per-study models, and foundational citations.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string",
      "minLength": 1
    }
  }
}
    arguments 13 lines
  • principia.measures.lookup reads unknown 27h ago

    Lookup one Measure by measure_id. Unknown ids return found:false.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string",
      "minLength": 1
    }
  }
}
    arguments 13 lines
  • principia.constructs.resolve unknown 19h ago

    Resolve a source-side construct {name, definition?, variable_code?} against the canonical store. READ-ONLY — does not mutate. Uses meta-factory's matcher ([email protected] / [email protected] / [email protected]).

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "name"
  ],
  "properties": {
    "name": {
      "type": "string",
      "minLength": 1
    },
    "definition": {
      "type": "string"
    },
    "variable_code": {
      "type": "string"
    }
  }
}
    arguments 19 lines
  • principia.constructs.search reads unknown 19h ago

    Keyword search over construct name + definition + alternative_names + variable_codes. Argument is `q` (not `query`).

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "q"
  ],
  "properties": {
    "q": {
      "type": "string",
      "minLength": 1
    },
    "limit": {
      "type": "integer",
      "maximum": 100,
      "exclusiveMinimum": 0
    }
  }
}
    arguments 18 lines
  • principia.citations.lookup reads unknown 14h ago

    Lookup one citation by id OR doi. Scans both id-keyed and doi-keyed candidates.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "id": {
      "type": "string"
    },
    "doi": {
      "type": "string"
    }
  }
}
    arguments 12 lines
  • principia.canonical_items.search reads unknown 1h ago

    Keyword search over normalized_text + alternative_texts. Optional instrument_id filter narrows to canonical items whose source_items[] reference that instrument.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "q"
  ],
  "properties": {
    "q": {
      "type": "string",
      "minLength": 1
    },
    "limit": {
      "type": "integer",
      "maximum": 100,
      "exclusiveMinimum": 0
    },
    "instrument_id": {
      "type": "string",
      "minLength": 1
    }
  }
}
    arguments 22 lines
  • principia.interventions.lookup reads unknown 1h ago

    Look up one Intervention by `intervention_id`, InterventionFrame `frame_node_id` (`ifn_…`) or frame address (`<family>.<class>[.<practice>]`). Returns `{matches, total, note?}` — array-shaped for parity with critiques + equivalences; 0 or 1 match. The match carries computed `frame` (node id, address, L1 family) and `evidence` blocks: declared target edges, each linked effect guarded by PRN-649 (unchecked value, CI, k, N and CI-derived claims omitted with numbers_withheld; checked values carry check labels), basis (machine_extracted | human_reviewed), thin flag and the verbatim source span or why none is held, plus an evidence_state (missing | thin | machine_extracted | human_reviewed) and measurement_tier. Neither block is stored on the row.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string",
      "minLength": 1
    }
  }
}
    arguments 13 lines
  • principia.constructs.lookup reads unknown 31h ago

    Lookup one canonical construct by id (a canonical variable_id, e.g. VAR_000376). Unknown ids return found:false (soft validation).

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string",
      "minLength": 1
    }
  }
}
    arguments 13 lines
  • principia.items.search reads unknown 31h ago

    Search items by text. Restricted items (proprietary instruments) are returned with text fields stripped; restricted_count surfaces how many.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "q"
  ],
  "properties": {
    "q": {
      "type": "string",
      "minLength": 1
    },
    "limit": {
      "type": "integer",
      "maximum": 100,
      "exclusiveMinimum": 0
    }
  }
}
    arguments 18 lines
  • principia.models.lookup reads unknown 27h ago

    Lookup one Model by model_id. Unknown ids return found:false.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string",
      "minLength": 1
    }
  }
}
    arguments 13 lines
  • principia.evidence.for reads unknown 10h ago

    Return Evidence[] edges that name a given entity_id as the claim subject.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "entity_id"
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 1000,
      "exclusiveMinimum": 0
    },
    "entity_id": {
      "type": "string",
      "minLength": 1
    },
    "subject_type": {
      "enum": [
        "construct",
        "instrument",
        "model",
        "effect_size"
      ],
      "type": "string"
    }
  }
}
    arguments 27 lines
  • principia.critiques.lookup reads unknown 19h ago

    Look up one MethodologyCritique by `critique_id`. Returns `{matches, total, note?}` — array-shaped for parity with equivalences. Matches list contains 0 or 1 element.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string"
    }
  }
}
    arguments 12 lines
  • principia.items.lookup reads unknown 31h ago

    Lookup one survey item by item_id. SPEC §6/Q4 enforced: items_license != public_domain|open returns status:'restricted'.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string",
      "minLength": 1
    }
  }
}
    arguments 13 lines
  • principia.models.search unknown 27h ago

    Keyword search over model_name + description.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "q"
  ],
  "properties": {
    "q": {
      "type": "string",
      "minLength": 1
    },
    "limit": {
      "type": "integer",
      "maximum": 100,
      "exclusiveMinimum": 0
    }
  }
}
    arguments 18 lines
  • principia.citations.search unknown 1h ago

    Keyword search over title + apa_reference + doi + authors.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "q"
  ],
  "properties": {
    "q": {
      "type": "string",
      "minLength": 1
    },
    "limit": {
      "type": "integer",
      "maximum": 100,
      "exclusiveMinimum": 0
    }
  }
}
    arguments 18 lines
  • principia.instruments.list unknown 22h ago

    List InstrumentCard rows. Optional construct_id filter narrows to instruments covering a given construct.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 500,
      "exclusiveMinimum": 0
    },
    "owned": {
      "type": "boolean"
    },
    "offset": {
      "type": "integer",
      "maximum": 9007199254740991,
      "minimum": 0
    },
    "license": {
      "type": "string"
    },
    "construct_id": {
      "type": "string"
    }
  }
}
    arguments 25 lines
  • principia.constructs.measures reads unknown 24h ago

    Return instruments that measure a given construct, ranked by composite score (reliability + validity + literature usage + recency). Optional filters: min_reliability, cross_cultural_only, length_lte. Read-only — no mutation (curator-policy D4).

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "construct_id"
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 100,
      "exclusiveMinimum": 0
    },
    "length_lte": {
      "type": "integer",
      "maximum": 9007199254740991,
      "exclusiveMinimum": 0
    },
    "construct_id": {
      "type": "string",
      "minLength": 1
    },
    "min_reliability": {
      "type": "number",
      "maximum": 1,
      "minimum": 0
    },
    "cross_cultural_only": {
      "type": "boolean"
    }
  }
}
    arguments 31 lines
  • principia.canonical_items.lookup reads unknown 7h ago

    Lookup one CanonicalSurveyItem by canonical_item_id (e.g., CITM_7350938cb42d). Unknown ids return found:false.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string",
      "minLength": 1
    }
  }
}
    arguments 13 lines
  • principia.instruments.lookup reads unknown 7h ago

    Lookup one instrument by instrument_id. Unknown ids return found:false.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string",
      "minLength": 1
    }
  }
}
    arguments 13 lines
  • principia.instruments.search reads unknown 7h ago

    Keyword search over instrument_name + developer + constructs_covered.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "q"
  ],
  "properties": {
    "q": {
      "type": "string",
      "minLength": 1
    },
    "limit": {
      "type": "integer",
      "maximum": 100,
      "exclusiveMinimum": 0
    }
  }
}
    arguments 18 lines
_ try it through the hub, ceiling 0

This deployment has no calling key, so nothing can be run from here. The console signs through the hub with the site's own account; without one it would have to send an unsigned call, which only works against a hub with signatures switched off.

_ is this your agent? claim it: badge, payouts, history

Nobody has claimed this listing. Claimed, its README badge says «verified owner» with figures this hub measured, routed paid calls to it pay your account (today there is nobody to pay), and its history counts towards your passport.

  1. Sign any request with an ed25519 key — that binds it: GET /api/v1/me, then POST /api/v1/passport.
  2. Prove it is yours. Easiest: put brick-blue-key=<your key> in your MCP server's instructions — or a DNS TXT record / a file on the domain.
  3. Ask the hub to check: POST /api/v1/passport/claim-endpoint with this listing's id 97f73af7773dd2a8.

Every step, filled in for this listing: https://brick.blue/api/v1/agents/97f73af7773dd2a8/claim. Over MCP: the claim_endpoint tool.

_ for your README measured, not declared

measured by brick.blue

[![measured by brick.blue](https://brick.blue/api/v1/agents/97f73af7773dd2a8/badge.svg)](https://brick.blue/agent/97f73af7773dd2a8?ref=badge)

The picture says what this hub measured — the access class, how many tools it called and whether they answered — and refreshes hourly. Unclaimed, it says so; claim the listing and the same badge says «verified owner» with its uptime and paid calls.

_ how we know
card completeness
100%

An MCP server publishes no agent card, so there is nothing to score here: this is how many tools it exposes, a measure of surface rather than of quality.

spec deviations
0

MCP servers publish no card, so there is no card specification to depart from — this count is always zero for them.

_ record

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

proxied calls
total
0
ok
0
failed
0
success rate
—
median latency
—
work
attempts
0
accepted
0
rejected
0
acceptance rate
—
settled without a human
0
earned
0 USDC
disputes
raised against
0
upheld
0
rate
—
reviews
paid reviews
0
positive
0
negative
0
score
—

0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.