# AI21 Labs MCP > AI21 Labs provides access to high-fidelity Natural Language Processing (NLP) capabilities for your AI client. This MCP lets you generate complex conversational responses, summarize huge documents, correct grammar mistakes instantly, and extract contextually accurate answers from provided texts at enterprise scale. ## Overview - **Category:** ai-frontier - **Price:** Free - **Tags:** ai21, jamba-models, nlp-api, grammar-correction, text-summarization, rag-automation, linguistic-intelligence, content-orchestration, mcp ## Description Your agent can handle sophisticated language tasks that usually require multiple specialized tools. Instead of juggling different APIs for summarization, style checking, or Q&A, this MCP brings all the core intelligence into one place. You can start with a simple prompt to generate high-fidelity conversation threads, then have your agent automatically summarize long research papers or segment out key topics in a document. Need to fix grammar? Just ask it; it corrects mistakes while suggesting stylistic improvements. Plus, you can use the system to manage documents directly, pulling precise answers based only on files you upload. By connecting this MCP through Vinkius, your AI client acts like a dedicated linguistic engineer and document architect, handling everything from text cleanup to deep contextual analysis using natural conversation. ## Tools ### ai21_chat_completion Generates conversational responses based on prompts, simulating a dialogue exchange. ### ai21_contextual_answers Answers user questions by grounding the response strictly within provided source material. ### ai21_delete_file Removes a specific file from your uploaded document library. ### ai21_grammar_correction Fixes grammatical errors in text while preserving the core meaning of the content. ### ai21_get_file Retrieves specific details about an uploaded file, including metadata and size. ### ai21_text_improvements Suggests stylistic changes to text passages to make them sound more professional or tailored to a specific tone. ### ai21_list_files Provides an overview of all files currently stored in your connected document library. ### ai21_paraphrase_text Rewrites existing text to generate alternative phrasing without changing the factual content. ### ai21_segment_text Divides a large block of text into smaller, distinct sections based on identified topics. ### ai21_summarize_text Reduces long documents or articles down to their most critical points and main takeaways. ## Prompt Examples **Prompt:** ``` Fix the grammar in this text: 'he dont know what to did about the project'. ``` **Response:** ``` I've applied the high-fidelity grammar correction. The optimized text is: 'He doesn't know what to do about the project.' Need help with stylistic improvements? ``` **Prompt:** ``` Summarize this long document focusing only on 'Action Items'. ``` **Response:** ``` Processing summary... Based on AI21 intelligence, the key action items are: 1) Deploy the staging server and 2) Verify the API documentation. Would you like the high-fidelity detailed breakdown? ``` **Prompt:** ``` Ask jamba-1.5-mini: 'Write a technical title for an AI API blog'. ``` **Response:** ``` Jamba model response: 'Unlocking High-Fidelity Language Intelligence: A Deep Dive into Modern AI API Orchestration'. Shall I generate an outline for this post? ``` ## Capabilities ### Generate Conversational Dialogue The agent generates human-like, high-fidelity responses for back-and-forth conversations. ### Answer Questions from Documents It reads uploaded materials and answers specific questions using only the information provided in those documents. ### Refine and Polish Writing You can ask it to correct grammar, improve style, or completely rephrase text while keeping the original meaning intact. ### Analyze and Structure Text The system summarizes long passages into key points or segments a large block of text by specific topics. ## Use Cases ### Drafting a product spec sheet A Product Manager has an internal wiki document (the source context). They ask their agent to answer questions about the project timeline, using `ai21_contextual_answers`. The agent pulls key dates and requirements directly from the documents without needing manual cross-referencing. ### Updating old marketing copy A Copywriter needs to update 50 pages of outdated web content. They feed a section into their agent, ask it to use `ai21_paraphrase_text` with a 'modern' tone, and then run the result through `ai21_grammar_correction`. The entire batch updates in minutes. ### Preparing for an executive briefing A Consultant receives 10 dense market reports. Instead of reading them all, they ask their agent to use `ai21_summarize_text` on each one and then aggregate the key takeaways into a single bulleted list for the final presentation. ### Organizing research notes A Student has a huge stack of lecture transcripts. They upload them, ask their agent to use `ai21_segment_text` by topic (e.g., 'Economics,' 'History'), and then run the individual segments through style checks with `ai21_text_improvements`. ## Benefits - Stop writing prompts like a prompt engineer. You just tell your agent, 'Summarize this and fix the tone,' and it handles the complex sequence of tasks using tools like `ai21_summarize_text` and `ai21_text_improvements`. - When you're working with proprietary data, don't risk hallucination. The ability to use `ai21_contextual_answers` forces your agent to base its answers only on documents you provide. - Manage your content library directly through your AI client. You can list files with `ai21_list_files` and even delete old ones using `ai21_delete_file`, keeping your workspace clean and organized. - Need a whole new angle? Instead of manual rewriting, use the `ai21_paraphrase_text` tool. It gives you multiple ways to say the same thing, perfect for SEO or brand consistency. - It handles massive text chunks seamlessly. Use `ai21_segment_text` to break a white paper into digestible topics, and then run those segments through grammar correction with `ai21_grammar_correction`. ## How It Works The bottom line is that you don't write complex API calls; you just ask your AI client what needs doing with the text. 1. First, subscribe to this MCP on Vinkius. 2. Second, retrieve your API Key from the AI21 Studio dashboard and provide it to your AI client. 3. Third, you talk to your agent naturally. It uses its built-in intelligence to perform text tasks like summarizing or correcting grammar instantly. ## Frequently Asked Questions **How does ai21_contextual_answers work?** The tool answers questions by reading uploaded documents first. It forces the response to cite only information found in your context, preventing the agent from guessing or hallucinating. **Can I use ai21_summarize_text for legal briefs?** Yes. You upload the brief and ask the agent to summarize it. It's best practice to also follow up with `ai21_segment_text` to isolate key clauses. **What is the difference between ai21_paraphrase_text and ai21_text_improvements?** Paraphrasing simply rewrites text while keeping the meaning. Text improvements are more advanced; they suggest stylistic changes to elevate the writing's quality or tone. **Does ai21_chat_completion support document Q&A?** No, for reliable question answering based on documents, you should use `ai21_contextual_answers`. Chat completion is better for open-ended conversation. **How do I manage my files with this MCP?** You can list all your uploaded files using `ai21_list_files` or retrieve details on a specific file with `ai21_get_file`. You also have the option to delete old ones via `ai21_delete_file`.