com.peopleprincipia/principia
com.peopleprincipia/principiaSource-graded registry of organizational measurement: constructs, priors, instruments, citations.
Score: 20/100
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Tools · 35
List canonical constructs (resolved CanonicalVariable rows). Supports limit/offset, engagement_family_only, and abstraction_level (PRN-271).
Lookup one canonical construct by id (a canonical variable_id, e.g. VAR_000376). Unknown ids return found:false (soft validation).
Keyword search over construct name + definition + alternative_names + variable_codes. Argument is `q` (not `query`).
Resolve a source-side construct {name, definition?, variable_code?} against the canonical store. READ-ONLY — does not mutate. Uses meta-factory's matcher (name@0.9 / code@0.85 / definition@0.6).
List InstrumentCard rows. Optional construct_id filter narrows to instruments covering a given construct.
Lookup one instrument by instrument_id. Unknown ids return found:false.
Keyword search over instrument_name + developer + constructs_covered.
Lookup one survey item by item_id. SPEC §6/Q4 enforced: items_license != public_domain|open returns status:'restricted'.
Search items by text. Restricted items (proprietary instruments) are returned with text fields stripped; restricted_count surfaces how many.
Lookup one citation by id OR doi. Scans both id-keyed and doi-keyed candidates.
Keyword search over title + apa_reference + doi + authors.
List Measure rows. entity_kind filter selects scientific_construct vs operational_metric.
Lookup one Measure by measure_id. Unknown ids return found:false.
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. …
List Model rows (theoretical / structural frameworks).
Lookup one Model by model_id. Unknown ids return found:false.
Keyword search over model_name + description.
Search EffectSize rows by from/to/statistic_type.
Return Evidence[] edges that name a given entity_id as the claim subject.
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.…
Lookup a synthesized Bayesian prior by id OR (from_construct_id, predicate, to_construct_id). Empty until PRN-021 synthesis engine ships.
Search canonical priors by from/predicate/to. Empty until PRN-021 synthesis engine ships.
List canonical theoretical models (JD-R, COR, SDT, AET, JCM, Goal-Setting, Equity, Two-Factor, etc.). Sorted by foundational publication year. Read-only.
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 citatio…
Search theoretical models by keyword over name/summary/constructs. Optional filters: invokes_construct_id (theories that invoke a specific construct), field_domain (classification axis).
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, …
Search InstrumentEquivalence rows by `construct_id` and/or `instrument_id`. `instrument_id` matches either side of the pair. Optional `mapping_method` filter.
Look up one MethodologyCritique by `critique_id`. Returns `{matches, total, note?}` — array-shaped for parity with equivalences. Matches list contains 0 or 1 element.
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…
List CanonicalSurveyItem rows (PRN-050 item-level dedup spine). Each row aggregates one normalized item stem across N source instruments via source_items[].
Lookup one CanonicalSurveyItem by canonical_item_id (e.g., CITM_7350938cb42d). Unknown ids return found:false.
Keyword search over normalized_text + alternative_texts. Optional instrument_id filter narrows to canonical items whose source_items[] reference that instrument.
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 regist…
Look up one Intervention by `intervention_id`. Returns `{matches, total, note?}` — array-shaped for parity with critiques + equivalences. Matches list contains 0 or 1 element.
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 joi…
How to use
Claude Desktop or claude.ai: add a custom connector (Customize → Connectors; on Team and Enterprise plans an owner adds it under Organization settings → Connectors) with this server URL: https://peopleprincipia.com/api/mcp
Cursor or Cline: add to your MCP config:
{
"mcpServers": {
"com.peopleprincipia/principia": {
"url": "https://peopleprincipia.com/api/mcp",
"transport": "streamable-http"
}
}
}