com.peopleprincipia/principia

down checked 2026-11-09T07:38:59.813Z

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Publisher-provided description

Source-graded registry of organizational measurement: constructs, priors, instruments, citations.

Summary by lookupd

Lets agents look up and search source-graded organizational measurement data: constructs, instruments, citations, priors and evidence.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http principia https://peopleprincipia.com/api/mcp

Codex, remote (streamable-http)

codex mcp add principia --url https://peopleprincipia.com/api/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "principia": {
      "url": "https://peopleprincipia.com/api/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (showing 30 of 36)

Publisher-provided text

principia.constructs.list List canonical constructs (resolved CanonicalVariable rows). Supports limit/offset, engagement_family_only, and abstraction_level (PRN-271).
principia.constructs.lookup Lookup one canonical construct by id (a canonical variable_id, e.g. VAR_000376). Unknown ids return found:false (soft validation).
principia.constructs.search Keyword search over construct name + definition + alternative_names + variable_codes. Argument is `q` (not `query`).
principia.constructs.resolve Resolve a source-side construct {name, definition?, variable_code?} against the canonical store. READ-ONLY — does not mutate. Uses meta-factory's matcher (name@
principia.instruments.list List InstrumentCard rows. Optional construct_id filter narrows to instruments covering a given construct.
principia.instruments.lookup Lookup one instrument by instrument_id. Unknown ids return found:false.
principia.instruments.search Keyword search over instrument_name + developer + constructs_covered.
principia.items.lookup Lookup one survey item by item_id. SPEC §6/Q4 enforced: items_license != public_domain|open returns status:'restricted'.
principia.items.search Search items by text. Restricted items (proprietary instruments) are returned with text fields stripped; restricted_count surfaces how many.
principia.citations.lookup Lookup one citation by id OR doi. Scans both id-keyed and doi-keyed candidates.
principia.citations.search Keyword search over title + apa_reference + doi + authors.
principia.measures.list List Measure rows. entity_kind filter selects scientific_construct vs operational_metric.
principia.measures.lookup Lookup one Measure by measure_id. Unknown ids return found:false.
principia.constructs.measures Return instruments that measure a given construct, ranked by composite score (reliability + validity + literature usage + recency). Optional filters: min_reliab
principia.models.list List Model rows (theoretical / structural frameworks).
principia.models.lookup Lookup one Model by model_id. Unknown ids return found:false.
principia.models.search Keyword search over model_name + description.
principia.effects.search Search EffectSize rows by from/to/statistic_type. Each returned value's observed/corrected basis is named per EFFECT_ESTIMATE_GLOSSARY (@people-analyst/measurem
principia.evidence.for Return Evidence[] edges that name a given entity_id as the claim subject.
principia.evidence_statements.search Search owned, OA-sourced, attributed, stance-classified evidence quotes for a construct→construct relationship (from/to), or any statement naming a single const
principia.canonical_priors.lookup 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'
principia.priors.moderators 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 ro
principia.canonical_priors.search Search canonical priors by from/predicate/to. Empty until PRN-021 synthesis engine ships.
principia.theoretical_models.list List canonical theoretical models (JD-R, COR, SDT, AET, JCM, Goal-Setting, Equity, Two-Factor, etc.). Sorted by foundational publication year. Read-only.
principia.theoretical_models.lookup Look up one CanonicalTheoreticalModel by id (e.g., theory.jd_r). Returns the theory's canonical constructs, canonical relations (with predicates), descendant pe
principia.theoretical_models.search Search theoretical models by keyword over name/summary/constructs. Optional filters: invokes_construct_id (theories that invoke a specific construct), field_dom
principia.equivalences.lookup Look up InstrumentEquivalence rows by `id` OR by the canonical tuple (`construct_id` + `instrument_a` + `instrument_b` [+ optional `mapping_method`]). Pair orde
principia.equivalences.search Search InstrumentEquivalence rows by `construct_id` and/or `instrument_id`. `instrument_id` matches either side of the pair. Optional `mapping_method` filter.
principia.critiques.lookup Look up one MethodologyCritique by `critique_id`. Returns `{matches, total, note?}` — array-shaped for parity with equivalences. Matches list contains 0 or 1 el
principia.critiques.search Search MethodologyCritique rows by composite filter (`subject_id`, `subject_type`, `critique_type`, `severity`). All filters AND together; any subset of the fou

Details

Version: 1
Transports: streamable-http
Uptime (7 days): 17%
Median latency: 1191 ms
First indexed: 2026-11-01T08:56:22.365Z
Last seen in registry: 2026-11-01T08:56:22.365Z
Repository: https://github.com/people-analyst/principia
Website: https://peopleprincipia.com

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62930 servers
Last crawl: 2026-11-13T00:17:28.001Z
API base: https://api.lookupd.com
MCP URL: https://api.lookupd.com/mcp