{"record":{"id":"e901135801180b16","repo":"jackwener/OpenCLI","slug":"barchart-greeks-request-failed-http-data-status","errorCode":null,"errorMessage":"Barchart greeks request failed: HTTP ${data.status}${data.statusText ? ` ${data.statusText}` : ''}","messagePattern":"Barchart greeks request failed: HTTP (.+?)(.+?)` : ''\\}","errorType":"exception","errorClass":"CommandExecutionError","httpStatus":null,"severity":"error","filePath":"clis/barchart/greeks.js","lineNumber":160,"sourceCode":"                delta: r.delta,\n                gamma: r.gamma,\n                theta: r.theta,\n                vega: r.vega,\n                rho: r.rho,\n                volume: r.volume,\n                openInterest: r.openInterest,\n                expiration: r.expirationDate,\n              };\n            })\n          };\n        } catch(e) {\n          return { ok: false, reason: 'exception', message: e?.message || String(e) };\n        }\n      })()\n    `));\n        if (!data || data.ok !== true) {\n            if (data?.reason === 'http') {\n                throw new CommandExecutionError(`Barchart greeks request failed: HTTP ${data.status}${data.statusText ? ` ${data.statusText}` : ''}`);\n            }\n            if (data?.reason === 'malformed') {\n                throw new CommandExecutionError(`Barchart greeks returned an unreadable options payload${data.message ? `: ${data.message}` : ''}`);\n            }\n            if (data?.reason === 'exception') {\n                throw new CommandExecutionError(`Barchart greeks request failed: ${data.message || 'unknown error'}`);\n            }\n            throw new CommandExecutionError(`Failed to fetch Barchart greeks for ${symbol}`);\n        }\n        if (!Array.isArray(data.rows)) {\n            throw new CommandExecutionError('Barchart greeks returned an unreadable options payload');\n        }\n        if (data.rows.length === 0) {\n            throw new EmptyResultError('barchart greeks', `No option greeks were returned for ${symbol}. Confirm the symbol, expiration, and Barchart login state.`);\n        }\n        return data.rows.map(r => {\n            if (!r || typeof r !== 'object' || Array.isArray(r)) {\n                throw new CommandExecutionError('Barchart greeks returned a malformed option row');","sourceCodeStart":142,"sourceCodeEnd":178,"githubUrl":"https://github.com/jackwener/OpenCLI/blob/49907e53dc3ade5c223ff0c4c2c2785687cec4e6/clis/barchart/greeks.js#L142-L178","documentation":"The greeks command runs an in-browser fetch and inspects the returned envelope. When the envelope reports reason:'http', meaning Barchart answered with a non-OK HTTP status, the CLI raises this CommandExecutionError with the status code and optional status text. It signals the remote request itself failed rather than an argument problem.","triggerScenarios":"The browser-context fetch to Barchart's greeks endpoint returned data.ok !== true with reason:'http' — e.g. HTTP 401/403 when not logged in, HTTP 404 for a bad endpoint, HTTP 429 rate limiting, or HTTP 5xx from Barchart.","commonSituations":"Expired Barchart login session (401/403); hitting the endpoint too frequently (429); Barchart outage or maintenance (5xx); corporate proxy/firewall altering responses; option symbol variants the endpoint rejects.","solutions":["Read the HTTP status in the message: re-login if 401/403, back off if 429, retry later if 5xx.","Refresh your Barchart session/cookies and confirm you can load the greeks page while logged in.","Retry after a delay with rate limiting (the command is safe to rerun).","If a specific status persists (e.g. 404), check whether Barchart changed its endpoint URLs."],"exampleFix":"// before\nconst rows = await greeks({ symbol: 'AAPL' }); // throws on any HTTP error\n// after\nlet rows;\ntry {\n  rows = await greeks({ symbol: 'AAPL' });\n} catch (e) {\n  if (/HTTP 4/.test(e.message)) await relogin();\n  await sleep(2000);\n  rows = await greeks({ symbol: 'AAPL' });\n}","handlingStrategy":"retry","validationCode":"// Probe reachability + login state before the real call\nconst probe = await fetch('https://www.barchart.com', { headers: { cookie: cookies } });\nif (probe.status === 401 || probe.status === 403) throw new Error('Barchart session expired');","typeGuard":"function isHttpFailure(data) {\n  return data !== null && typeof data === 'object' && data.ok === false && data.reason === 'http';\n}","tryCatchPattern":"async function withRetry(fn, attempts = 3) {\n  for (let i = 0; i < attempts; i++) {\n    try {\n      return await fn();\n    } catch (e) {\n      const status = /HTTP (\\d{3})/.exec(e.message)?.[1];\n      const retryable = status && (status.startsWith('4') ? status === '429' : status.startsWith('5'));\n      if (!retryable || i === attempts - 1) throw e;\n      await new Promise(r => setTimeout(r, 2000 * 2 ** i));\n    }\n  }\n}","preventionTips":["Rate-limit greeks requests to avoid HTTP 429","Re-login to Barchart when you see 401/403 statuses","Retry with exponential backoff on 5xx errors"],"tags":["network","http","barchart","scraping"],"backgroundTag":"http-request-failed","analyzedSha":"49907e53dc3ade5c223ff0c4c2c2785687cec4e6","analyzedAt":"2026-08-29T08:14:47.543Z","schemaVersion":2},"datasetVersion":"2026-08-29T12:17:43.993Z"}