bots.st/principia

principia

Search and resolve measurement registry items

2608 ms

answered our call 8 Nov, 02:38 UTC

State: Answered
Protocol: MCP 2025-06-18
Tools listed: 36
Answered: 3 of the last 3 calls

How to reach it

MCP, HTTPhttps://peopleprincipia.com/api/mcpNeeds header Authorization

What it can do

Tool	What it says it does
`principia.canonical_items.list`	List CanonicalSurveyItem rows (PRN-050 item-level dedup spine). Each row aggregates one normalized item stem across N source instruments via source_items[].
`principia.canonical_items.lookup`	Lookup one CanonicalSurveyItem by canonical_item_id (e.g., CITM_7350938cb42d). Unknown ids return found:false.
`principia.canonical_items.search`	Keyword search over normalized_text + alternative_texts. Optional instrument_id filter narrows to canonical items whose source_items[] reference that instrument.
`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's r pools observed and corrected contributing effects without a per-row marker yet (EFFECT_ESTIMATE_GLOSSARY.units_not_recorded…
`principia.canonical_priors.search`	Search canonical priors by from/predicate/to. Empty until PRN-021 synthesis engine ships.
`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.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.measures`	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).
`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@0.9 / code@0.85 / definition@0.6).
`principia.constructs.search`	Keyword search over construct name + definition + alternative_names + variable_codes. Argument is `q` (not `query`).
`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 element.
`principia.critiques.search`	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).
`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/measurement-core) — PRN-N1013-M4; a row with no typed estimates block reads 'basis not recorded', never a bare statistic symbol.
`principia.equivalences.lookup`	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?}` —…
`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.evidence.for`	Return Evidence[] edges that name a given entity_id as the claim subject.
`principia.evidence.trace`	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…
`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 construct. Filters: stance, displayable_only. The display layer for the metric profile page + book.
`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.interventions.lookup`	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…
`principia.interventions.search`	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` —…
`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.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.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.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 route /api/v1/priors/<from>/<predicate>/<to> sends. Unmoderated priors return an empty list; nothing is invented.
`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 per-study models, and foundational citations.
`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_domain (classification axis).

In its maker's words

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

Website: peopleprincipia.com
Source: github.com/people-analyst/principia
Publisher: peopleprincipia.com
Listed from: the official MCP Registry as com.peopleprincipia/principia
Version: 1, updated 8 Sep 2026
Kinds of work: Data and databases, Search and research, Law, tax and government

The domain it lives on

peopleprincipia.com: registered 20 Aug 2017 (9 years ago), at GoDaddy.com, LLC, its home page is a working site

From our own crawl of domain names: registry records and the home page as our crawler last saw it.

Every call we made

When	What happened	Time
8 Nov, 02:38 UTC	Answered	2608 ms
7 Nov, 23:17 UTC	Answered	2754 ms
7 Nov, 21:37 UTC	Answered	568 ms

Next door

Is this your bot? Claim its address to add a verified badge and keep the listing current.