LangChain Web Data Proxy

title: LangChain Web Data Proxy that turns messy pages into validated JSON

description: Ship research assistants, briefs, and monitoring feeds faster. Our LangChain-ready proxy fetches dynamic pages compliantly, normalizes signals, and returns Pydantic-validated JSON you can trust—backed by SLAs, observability, and governance.

Outcome: fewer brittle scrapers, more reliable structured output. We provide drop-in connectors, typed pipelines, and golden-set evaluation so your team ships in days—not quarters.

• Plug & play connectors: HTTP and headless fetchers tuned for geo/locale; JSON/GraphQL autodiscovery.
• Typed pipelines: normalize HTML → extract facts → LLM parse into Pydantic models with hard schema checks.
• Evaluation-first: golden pages, pass/fail slices, drift alerts, and per-stage latency budgets.
• Observability: request IDs, ASN/city, retries, token usage, parser success; stream to your SIEM/TSDB.

Business impact: faster time-to-value, lower engineering toil, and cleaner, analytics-ready outputs.

• Dynamic content: hybrid mode—prefer stable JSON endpoints; elevate to headless for infinite scroll, tabs, or client-only text. Budget network-idle/selector readiness, consistent viewports, and high-DPI screenshots when evidence is required.
• Configuration-as-data: YAML/JSON knobs for markets, locales, rotation rules, and parser models—promote changes without redeploys.
• Smart retries: 429 jittered backoff and ASN/city moves; distinct strategies for timeouts vs. server denials vs. parser failures.
• Idempotency & caching: content-addressed storage (hash of URL+params), dedupe on ingest, replay LLM steps without re-crawl.
• Security & compliance: IP provenance, encryption in transit/at rest, PII minimization, and clear rules—no auth bypass, no DRM defeat, no paywall circumvention.

Turn volatile web pages into repeatable intelligence streams your teams can act on.

• Research assistants: entity tables, claims with citations, timelines, and confidence scores—ready for analyst review.
• Brief generation: standardized one-pagers (title, TL;DR, quotes, sources, change log) that drop into CMS/Slides.
• Monitoring summaries: scheduled watchlists for competitors, partners, and regulators—emit JSON/CSV/Parquet with diffs.

Pick a partner that disappears into your stack and stands behind outcomes.

• SDK & docs: first-class Python client, async, streaming, rate limiting, and LangChain examples out of the box.
• Reliability SLAs: success-per-10k calls by workflow (fetch/headless/parser), city-level routing, and valid-page yield after retries.
• Observability & cost control: structured logs, tracing, budgets per origin/ASN, and pricing per 1k successful artifacts.
• Governance: retention windows, access controls, audit logs, and incident kill-switches.

What you get with us: guided onboarding, golden-set evaluation in week one, dashboards wired to your BI, and export bundles (raw HTML/JSON + validated rows) to S3/GCS/Azure.

Call to action: Ready to ship structured outputs your teams trust? Start a 14-day pilot with target SLOs (schema pass-rate, valid-page yield, latency) and compare ROI against your current stack.