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LargeQuant API + MCP

The LQM operating system, programmable.

Build and run models, compose systems, benchmark reliability, connect operating data, verify outputs, guard actions and record outcomes through shared platform services.

OpenAPI 3.1Create workspace

Platform contracts

GET/api/v1/modelsList available Large Quantitative Models and their schemas
POST/api/v1/models/{model}/runsQueue an idempotent governed model execution
GET/api/v1/connector-definitionsList generic integration contracts and availability state
GET / POST/api/v1/connectionsInspect or configure tenant-scoped connections
GET / POST/api/v1/workflowsList or create versioned quantitative workflows
POST/api/v1/workflows/{uuid}/runsQueue an idempotent workflow run and step ledger

Stable assurance contracts

POST/api/v1/verifyVerify analysis text or a multipart quantitative document
POST/api/v1/verify/calculationRecompute one material quantitative claim
POST/api/v1/verify/documentExtract, classify and reconcile document claims
POST/api/v1/benchmarks/runsIssue a signed quantitative reliability profile
POST/api/v1/guard/checkReturn ALLOW, BLOCK, CHALLENGE, REQUIRE EVIDENCE, REQUIRE HUMAN, RECOMPUTE or DEFER
POST/api/v1/outcomesAttach an observed forecast outcome and update skill
GET/api/v1/proofs/{uuid}Retrieve a signed verification and integrity state
GET/api/v1/webhooksList registered assurance event endpoints
POST/api/v1/webhooksRegister an HMAC-signed event endpoint; the secret is returned once
POST/api/v1/webhooks/{uuid}/testQueue a signed test delivery

Quantitative tools

POST/api/v1/verify/numberReconcile a material number with sourced values
POST/api/v1/verify/financial-analysisVerify pasted analysis or multipart source documents
POST/api/v1/verify/financial-analysis/structuredVerify structured quantitative claims
POST/api/v1/verify/uncertaintyCalculate confidence intervals and signed evidence
POST/api/v1/verify/scenarioApply traceable absolute or percentage changes
POST/api/v1/verify/evidence-packetsBind arbitrary quantitative input and results to Ed25519 evidence

Verified forecasting

POST/api/v1/verify/forecastsGenerate a 13-week base, upside and downside cash forecast
GET/api/v1/verify/forecasts/{uuid}Retrieve scenarios, risk flags, drivers and observed model skill
POST/api/v1/verify/forecasts/{uuid}/benchmarkCompare selected and challenger models
POST/api/v1/verify/forecasts/{uuid}/outcomesRecord actuals and recompute accuracy, bias and calibration

Agent assurance

POST/api/v1/verify/agent-policiesCreate reusable confidence, evidence, value and liquidity policy
POST/api/v1/verify/agent-decisionsRun the backward-compatible agent decision contract
POST/api/v1/verify/mcpMCP JSON-RPC endpoint exposing assurance and quantitative tools
# Verify a number
curl -X POST https://largequant.com/api/v1/verify/number \
  -H "Authorization: Bearer $TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"claimed_value":1245000,"source_values":[1245000,1244999.99],"currency":"ZAR"}'

# Discover MCP tools
curl -X POST https://largequant.com/api/v1/verify/mcp \
  -H "Authorization: Bearer $TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

Signed event delivery

Register verification.completed, forecast.completed, benchmark.completed, guard.checked or outcome.recorded. Verify X-LargeQuant-Signature as HMAC-SHA256 of X-LargeQuant-Timestamp + "." + raw_request_body. Reject stale timestamps before processing the event.

Existing public discovery

GET/api/public/v1/lqm/modelsList public built-in LQMs
GET/api/public/v1/lqm/models/{key}/{version}Get one model contract
GET/api/public/v1/lqm/benchmarksBenchmark definitions and opt-in public results

Existing governed runtime

POST/api/v1/lqm/executeAuthenticated LQM execution
GET/api/v1/lqm/evidence/{uuid}Retrieve execution evidence
POST/api/v1/lqm/evidence/{uuid}/verifyVerify LQEP evidence
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