MCP server
MCP tools
The Equilibrium MCP server exposes three tools. All three return citations and a confidence band as part of the response payload, not as an optional field — see the overview for why that’s a fixed design choice rather than a default.
validate_claim
Runs a quantitative claim through claimcheck and returns the sources, assumptions, and confidence band behind it. This is a direct wrapper around claimcheck.validate.
{
"tool": "validate_claim",
"arguments": {
"claim": "AI raised task exposure 14% in 2025"
},
"response": {
"claim": "AI raised task exposure 14% in 2025",
"point_estimate": 0.14,
"confidence_band": [0.09, 0.19],
"evidence": [
{
"source_id": "task-exposure-bounds-2026",
"citation": "Measuring labour displacement without a counterfactual, 2026",
"retrieved": "2026-07-09"
}
],
"assumptions": [
"onet-taxonomy-mapping",
"task-mix-stability-2025"
]
}
}generate_synthetic_sample
Runs a generator and returns a sample plus its provenance manifest, without requiring the calling model to shell out or write files directly. This wraps synthetic.generate.
{
"tool": "generate_synthetic_sample",
"arguments": {
"generator": "household_panel",
"n": 500,
"seed": 20260801
},
"response": {
"run_id": "hp-20260801-7f3a1c",
"rows_generated": 500,
"sample_uri": "https://data.equilibriumlabs.org/runs/hp-20260801-7f3a1c/sample.parquet",
"manifest": {
"generator_version": "3.1.0",
"calibration_target": "eu-silc-2023-v2",
"seed": 20260801
}
}
}lookup_source
Looks up a single entry in the source registry by ID, or searches it by keyword.
{
"tool": "lookup_source",
"arguments": {
"source_id": "eurostat-silc-income-2023"
},
"response": {
"source_id": "eurostat-silc-income-2023",
"title": "EU-SILC Income and Living Conditions, 2023 release",
"publisher": "Eurostat",
"license": "CC BY 4.0",
"access_terms": "open, no registration",
"retrieval_date": "2026-05-11"
}
}