{"uid":"cap_-GmXkR2972jAbnadxm6l7","slug":"truthbear-gauge-historical-placement-add-on-041cdcd2","name":"TruthBear Gauge Historical Placement Add-on","description":"Add-on, historical placement: seasonal percentile for the current point, frequency, the percentile table, and the method and source used to compute them. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. $0.0050 per call.","url":"https://api.truthbear.co/gauge/history","method":"GET","headers":{},"bodySchema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"type":"object","required":["type","method","queryParams"],"properties":{"type":{"const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["signal_id","entity"],"properties":{"entity":{"type":"string","examples":["07010000"],"description":"required - monitored object id, paired with signal_id; free list at GET /gauge/catalog?signal_id=<signal_id> -> signals[0].entities[]"},"signal_id":{"type":"string","examples":["hydrology.river-level"],"description":"required - signal id (genus.species); free list at GET /gauge/catalog (paged; ?all=1 for every line)"}},"additionalProperties":false}}},"output":{"type":"object","required":["type"],"properties":{"type":{"const":"json"}}}}},"responseSchema":{"type":"json"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_0Jn2UNzr0YxBbTUw5ITXj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the seasonal percentile placement (and supporting stats) for the current reading of a monitored signal and entity — descriptive context, not a forecast.","exampleAgentPrompt":"What seasonal percentile is the current river level reading at gauge 07010000 for the hydrology.river-level signal — and show me the percentile table and how it was computed?","exampleUseCases":[{"title":"River flood risk historical context","prompt":"For the hydrology.river-level signal at entity 07010000, what seasonal percentile is the current reading at, and how does that compare historically? Include the percentile table."},{"title":"Drought severity ranking for water manager","prompt":"I'm tracking a precipitation signal — can you tell me what percentile this month's current reading falls in compared to historical seasonal data for entity 07010000? I want to know how unusual it is."},{"title":"Environmental report seasonal benchmark","prompt":"Pull the historical placement stats for signal hydrology.river-level at entity 07010000 — I need the current seasonal percentile, frequency, and the method used so I can include it in our environmental status report."}],"resultDescription":"A JSON object containing the seasonal percentile for the current reading, the frequency of that reading historically, a full percentile table for context, and metadata describing the method and source used to compute the placement. Returns a 422 no_charge error (unbilled) when no data is available for the requested signal and entity.","failureModes":["422 no_charge: no historical data exists for the given signal_id and entity combination — not billed","Missing required query parameter signal_id or entity returns validation error","Invalid signal_id format (must follow genus.species convention) causes rejection","Entity ID not recognized for the provided signal_id — returns empty or error","Endpoint is descriptive only; asking for forecasts or advice will not yield meaningful results"],"whenToPreferThis":"Choose this endpoint when you need to contextualize a current signal reading against its historical seasonal distribution — specifically to understand whether a reading is unusually high, low, or typical for the time of year. Prefer it over raw time-series exports (gauge/history-series) when you only need the current placement summary rather than the full historical dataset. Use it as an enrichment layer alongside live readings or calibrated index data (gauge/calibrated) to add statistical depth.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T06:51:41.000Z","isFirstParty":false}