Python agents

LangChain tool and middleware for Agent Help Network: look up what a host declares and recommends when a web step is blocked. Read-only.

LangChain chat model for the AI Stupid Level Smart Router: each request goes to the model that scores best for the task, with your own provider keys.

Verify signed ALEX evidence bundles in LangChain and LangGraph workflows.

LangChain tools for Ambolt: company registers, EU and UK tenders, VAT and IBAN checks, domain and SSL expiry, URL metadata and more. Free through the hosted MCP server.

LangChain integration for amu-pgvector: a VectorStore and Retriever backed by lineage-gated Analytical Memory Units on PostgreSQL + pgvector.

LangChain document loader for the AnyToMarkdown API: PDF, Word, Excel, PowerPoint and web pages to Markdown.

LangChain tools for AOTrust notarization — cryptographic proof-of-existence for AI agent outputs (x402, NEAR-anchored PDRs)

YouTube transcript search and entity resolution tools for LangChain and LangGraph.

An integration package connecting Bitdeer AI and LangChain

LangChain tools for BotsRated: free pre-payment preflight of x402 sellers, opt-in budgeted paid checks.

LangChain tools for Bowmark: typed functions an agent calls to search, price-check and book on live websites.

LangChain vector store for Cairn, the hybrid search database where a deletion is final

LangChain tools for CareJobs.Now: open US healthcare jobs, posted pay and employers

LangChain vector store on Chassis: semantic search in one file, in your own process

LangChain tools for ClawFetch — pay-per-call web intelligence for AI agents (x402, USDC on Base)

Route LangGraph graphs with a CLM (Contrastive Language Model): pick the next node by matching the state against route descriptions.

LangChain document loader for Reddit and Hacker News threads exported with Comment Scraper. Reads local JSON files, makes no network requests.

Unofficial migration helper for the sunset langchain-community: finds every langchain_community import, the standalone package that replaces it, rewrites 1:1 moves and vendors orphaned classes.

An integration package connecting ContextFetch and LangChain

LangChain integration for CyborgDB: The Confidential Vector Database

LangChain components for Decisio: a classifier, a router and a tool-risk gate

LangChain integration for the Decodo web scraping API

Tensorlake sandbox and Cloud Volume filesystem backends for Deep Agents

LangChain retriever and tools for the DeepInquiry verified-facts API: cited, tier-scored, signed facts.

LangChain tools for Degenscan Intel — cross-asset market-event intelligence for trading agents (SEC, Fed, regulators, disasters, halts, hacks, Polymarket, Hyperliquid perps), paid per call in USDC (x402) or API key.

LangChain tools for doc.cheap: read passports, ID cards and driver's licences into JSON.

LangChain document loader for docling.rs: PDF with layout, tables and OCR, DOCX, PPTX, XLSX, HTML and 40-odd formats into LangChain Documents, chunked with docling's metadata. docling in Rust, langchain-docling's API.

LangChain tools for EconDash macroeconomic data. Same free trial, API key and pay-per-call rules as the econdash client.

LangChain tools for emaki (emaki.ai), the Japanese-language AI video generator for Seedance 2.5 and Seedance 2.0: text to video, image to video and AI images from an agent

Read-only LangChain tools for source-cited public financial evidence

Google search, news, images, places and YouTube data/download tools for LangChain

Document to Markdown API and MCP server for PDF, Word, PowerPoint, Excel and HTML. OCR queue for large files. Hosted in Germany.

An integration package connecting FlexAI and LangChain

LangChain custom tool integration for the Fodda Context Layer

Foliant for LangChain: a payment tool for agents paying over x402 and a middleware that enforces a crew's spending budget on every tool call

LangChain tools for GAIP: check, watch, diagnose and verify AI agents, MCP servers and APIs (free, no key).

LangChain tools for Geekflare: web search, scraping, screenshots, PDFs, brand data, and website diagnostics.

Geniffy for LangChain: a memory of each of your users, for any LangChain agent. Middleware, tools and a retriever.

A graph-first LangChain integration for GestaltDB

YouTube transcript tools and document loader for LangChain: get YouTube video transcripts with timestamps and search YouTube from agents and RAG pipelines, via the GetYouTubeTranscript API.

LangChain and LangGraph integrations for Gnarl agent memory

LangChain tools for the GNews API: top headlines by country and category, and news search over an archive since 2020.

GPT Image by Ace Data Cloud LangChain toolkit

LangChain tools that check who really said a quote: a verdict, the source it was traced to, and a citation, from Gracious Quotes' fact-checked records.

HappyHorse by Ace Data Cloud LangChain toolkit

HydraDB integration for LangChain: persistent memory and retrieval.

An integration package connecting Infinispan and LangChain

LangChain integration for Ivorian languages (Baoulé first): speech recognition, translation, speech synthesis, a language wrapper for any chat model and a voice agent.

LangChain tools for Job Opportunities API: live job postings straight from employers

Compress LangChain Document page_content with jtoken for fewer LLM prompt tokens

LangChain retriever, document tool, and toolkit for the Kapa.ai knowledge base.

LangChain tool for Kavel AI image generation, usable with no API key

LangChain tools for Layrcake: find leads, enrich and verify emails, check and research companies, and draft campaigns that a person approves before anything sends.

LangChain tools for LFG Alarm: set real alarms on a phone, and ring it, from an agent.

LangChain tools for LiquidVision.app crypto derivatives data: open interest, funding and liquidations on 13 venues, liquidation cascades, positioning regime, measured Hyperliquid liquidation maps, funding dispersion, tokenized stocks. Read-only, no key needed.

Lizard Sandboxes integration for LangChain Deep Agents

An integration package connecting llama.cpp's llama-server and LangChain, with reasoning, timings, structured output and tool calling

LangChain retriever and tools for Machine Library: citable search over papers, books, patents, standards and Wikipedia.

LinkedIn API tools for LangChain: profiles, companies, contact refresh, posts and optional work emails.

Split markdown/MDX into chunks that keep exact source character offsets

LangChain partner tools for the Mekong x402 pay-per-call API fleet (Base, USDC, no signup)

MeMorae memory and retrieval adapters for LangChain and LangGraph

LangChain integration for meraGPT Decider 1: typed decisions with calibrated probabilities, as a Runnable, a tool and agent middleware

LangChain integration for MeshArc: web pages as Documents, and web search and page reading as agent tools.

In-process model routing for LangChain: a chat model that picks one of several candidate chat models per request.

Nano Banana by Ace Data Cloud LangChain toolkit

LangChain tool and retriever for the Neuronto Agentic Resource Discovery (ARD) registry.

Full 5-pillar NTI post-quantum security for LangChain agents.

LangChain tools and retriever for OpenAlex, the free index of the world's scholarly research

Moved to langchain-agentbeacon: live beacons for AI agents (AgentBeacon).

LangChain chat models served through an Otari gateway

LangChain document loader for PDFluent: PDF blocks, tables or markdown pages with page, box, kind and confidence, locally, fast or balanced quality.

LangChain tools for Pexafy: semantic search over 9M+ free stock photos from Unsplash, Pexels, Pixabay and more

Email inboxes for LangChain agents: Pidgeon tools to create an address, read, wait for a code, send and reply.

LangChain tools for Pink Agentic AI Payments: let agents request payments within company spending rules.

LangChain integration for the PrintFriendly API: load any web page as clean, ad-free Markdown.

Promigence sandbox backend for LangChain DeepAgents

LangChain tool and document loader that read web pages through Proxmint residential, datacenter and mobile proxies, with country, city and ASN targeting and sticky sessions.

LangChain and LangGraph integration for Recall, long-term memory for AI agents: chat history, retriever, tools and agent middleware.

LangChain integration for RecruitMCP: load RecruitMCP's MCP tools as LangChain tools.

Add init_reranker to the LangChain ecosystem

LangChain agent middleware that reads an agent's committed state, and repairs the step where a later action would contradict an earlier one.

LangChain integration for Runcrate: 200+ open models behind one OpenAI-compatible API

A langchain wrapper for s1 decisions

LangChain tools for SayMaker: generate images and video (Veo 3.1, Kling 3.0, Seedance 2.0, Nano Banana 2) from an agent

ScaleDown summarization, compression, tool-output compression, and extraction middleware for LangChain agents

LangChain integration for Scrape.ly: run Actors, load their results as documents, and give agents Scrape.ly tools.

LangChain tools for the ScrapeWise web-scraping and price-monitoring API.

Seedance by Ace Data Cloud LangChain toolkit

send0 tools for LangChain: give any agent an email inbox

send21 tools for LangChain. Crypto pay links and API for people and AI agents. The payer signs in their own wallet.

LangChain integration for SerpKite, the Google search API built for AI agents: search, cited answer and research tools, a retriever and a webpage loader.

Give a LangChain agent lead lists, company lists and grants from the live web. Every row comes with its source, priced per match in code.

LangChain middleware that checks an AI agent's stablecoin payments before they are sent

Submilli code mode for LangChain: run an agent's tool calls as TypeScript programs on submilli-server, under a Blueprint's policy.

Suno by Ace Data Cloud LangChain toolkit

LangChain document loader for superPDF AI: local PDFs as Markdown with tables, charts as data and OCR.

LangChain tools for SwarmMemo, the message board and coordination layer for AI agents.

AI-control monitors for LangChain agents and Deep Agents: every step an agent proposes is judged before any of its own tools run, and a control protocol decides what runs.

TableJourney food travel tools for LangChain: verified places to eat, food festivals with dates, food tours, cooking classes and stays in 224 cities.