AI knowledge tools with an API

Figure and bar: visits/mo, estimate · year: online since

1. #2A

   AtlyMCP · open

   Ranks and explains local places against a person's stated intent, such as a quiet café for remote work, through an app or API.

   3.5M
   Active
2. #8G

   Glean

   Indexes company apps like Slack, Drive and Jira into one permission-aware search, with a chat assistant and agents that answer from that index.

   63.5k
   Active
   Contact sales
   2019
3. #11M

   Mintlify

   Hosts self-updating documentation and knowledge bases that agents and LLMs can access and search.

   34.9k
   Active
   From $450/mo
4. #16A

   AI for Research

   Searches scientific papers and checks whether later studies support or contradict each claim, then grounds AI answers in those papers.

   16.7k
   Active
   From $12/mo
5. #19L

   LinerMCP · sign-in

   Searches academic research, generates citations, and drafts professional documents with cited sources.

   12.8k
   Active
   From $14.99/user/mo
6. #20T

   Tana

   Outliner workspace that stores notes, tasks and meeting transcripts as linked nodes with typed fields, plus an assistant that acts on them.

   11.4k
   Active
   From $20/user/mo
   2021
7. #29S

   Summify

   Builds searchable knowledge pods from videos, podcasts, documents, and voice notes to use across multiple AI tools.

   3.3k
   Active
   From $8/mo
   2024
8. #32K

   Kapa AI

   Ingests and retrieves unstructured knowledge from multiple sources to provide accurate context for AI agents.

   2.1k
   Active
   Free plan
9. #35S

   sipsip.ai

   Transcribes and summarizes videos, podcasts, meetings, and documents into structured insights and key points.

   1k
   Active
   2025
10. #36A

    AmassMCP · sign-in

    Answers research questions by searching papers, trials, patents and regulatory records, citing the record behind each claim.

    1k
    Active
    From $9/mo
    2022
11. #38O

    Off-Nadir DeltaMCP · sign-in

    Turns news reports and open data into geolocated events, each linked to its sources and flagged for satellite visibility.

    670
    Active
    2024
12. #42N

    NewsCatcherMCP · open

    Searches and streams news articles from 140,000 sources with entity resolution and real-time monitoring.

    490
    Active
    From $50/mo
13. #51C

    CoChat

    Searches academic papers, verifies citations against real sources, and organizes research findings in a collaborative workspace.

    201
    Active
    From $9/mo
    2025
14. #54A

    AI JSONMedic

    Repairs invalid JSON from AI tools, removing markdown fences, fixing quotes and commas, and handling truncation.

    195
    Active
15. #55S

    SynopticMCP · open

    Streams real-time news and social posts from trusted sources, including Truth Social, White House releases, and SEC EDGAR filings, for trading and monitoring.

    191
16. #56T

    TweetsmashMCP · open

    Searches, labels and exports your saved X bookmarks, sends scheduled digests, and syncs them to Notion, Google Sheets or Zotero.

    190
    Maintained
    From $7/mo
    2022
17. #57M

    MDflowMCP · sign-in

    Stores markdown files in shared workspaces with a browser editor, tasks from checkboxes, public knowledgebase links, and API and MCP access.

    182
    Active
    From ≈ $5.61/mo
18. #61D

    Dashworks

    Searches across all workplace apps and knowledge bases to answer team questions in real time.

    172
    Maintained
    From $10/user/mo
19. #63B

    BackrowMCP · sign-in

    Records lectures and meetings, transcribes them live, and turns transcripts into notes, flashcards, quizzes and study guides.

    165
    Active
    From $9.99/mo
20. #84B

    Bookmarkjar ®

    Saves and searches bookmarks across platforms using semantic search and AI tagging.

    85
    Active
    From $3.99/mo
21. #88S

    StashrMCP · sign-in

    Saves bookmarks from any platform, tags them with AI, and makes them searchable for you or your agents.

    68
    Active
    From $6/mo
22. #93M

    Monkt

    Converts documents and web pages into AI-ready markdown or structured JSON.

    58
    Active
    From $4.99/mo
23. #94L

    LuneMCP · sign-in

    Connects AI agents to computer science research papers for literature review, experimentation design, and peer review without hallucination.

    54
    Active
    From $4.99/mo
24. #99R

    Reasoning Labs

    Answers business questions and runs analyses on your data using autonomous agents that write SQL and Python.

    47
    Active
    From $69/user/mo
25. #111G

    General CatalystMCP · open

    Ingests timestamped text into a store and answers questions with ranked, dated evidence for AI agents.

    29
    Active
    From $99/mo
    2025
26. #113E

    emailmdMCP · open

    Converts markdown files into responsive, email-safe HTML with a plain-text part, pre-send linting, and an MCP server.

    27
    Active
27. #115F

    FoddaMCP · sign-in

    Provides curated market research and institutional data to AI agents via MCP protocol.

    25
    Active
    From $50/mo
    2004
28. #124Q

    Quant DataMCP · open

    Tracks what research publishers said about each ticker and measures those claims against market data, served through an API and MCP server.

    19
    Active
    From $49/mo
29. #126A

    AI to AI Hub

    Runs questions through multiple AI models simultaneously so they debate and critique each other's responses.

    18
    Active
    From $19/mo
30. #134H

    HeatPulseMCP · open

    Aggregates AI news from English, German and French outlets into daily issues ranked by how widely each story is covered.

    12
    Active
31. #140Q

    Quercle

    Fetches and renders web pages for AI agents, extracting clean markdown with prompt injection protection.

    9
    Maintained
    From $5/mo
32. #141I

    Introducing Ask Channel AI

    Searches and answers questions across a YouTube channel's transcripts, returning quotes and timestamps linked to the source video.

    9
    Active
    From $9.99/mo
33. #150C

    Cron TranslatorMCP · open

    Explains cron expressions in plain English and lists their next run times in a chosen timezone.

    7
    Active
34. #151A

    Agentic NewsMCP · sign-in

    Monitors thousands of news sources for user-chosen topics and delivers a deduplicated daily briefing of stories that pass automated validation.

    7
    Active
    From $9/mo
35. #154B

    branchlyMCP · sign-in

    Answers visitors' questions from a website's own content through chat, search, navigator and form interfaces.

    6
36. #156G

    GitHub for AI Agent Memory

    Shared memory system where AI agents store, learn from, and reinforce knowledge across tasks.

    5
    Active
    From $29/mo
37. #160K

    Knowledge for AgentsMCP · open

    Shared knowledge network where AI agents contribute and discover solutions to problems.

    4
    Active
38. #168A

    Agents WikiMCP · open

    Serves openly licensed how-to articles for AI agents over HTML, markdown, REST and MCP, with authenticated contribution access.

    4
    Active
39. #172P

    Pensieve

    Builds a unified knowledge map from company data sources and feeds it to AI agents via standard protocols.

    3
    Active
    From ≈ $670/mo
40. #173T

    Triall

    Runs questions through three AI models that independently answer, critique each other blind, and verify claims against web sources.

    3
    From $11/mo
41. #181S

    ScriptMasterLabsMCP · open

    Converts one public https URL into compact markdown for language models, billed per accepted read in USDC over x402.

    3
    Active
    From $2 per use
42. #182R

    RepageMCP · sign-in

    Publishes markdown documents and plans to shareable pages with inline comments and version history, exportable as plain files.

    3
    Maintained
    Free
43. #183S

    Share HTML in secondsMCP · sign-in

    Publishes an uploaded HTML or Markdown file to a private shareable link, with re-uploads that keep the same URL.

    3
44. #184U

    URLpipeMCP · open

    Fetches any web page in real Chrome and returns it as markdown, screenshots, PDFs, metadata, HTML and audits via API or MCP.

    3
    Active
    From $19/mo
45. #185M

    makesPDFMCP · open

    Converts Markdown or templates into PDF/A-2a and PDF/UA-1 tagged files with embedded fonts, rendered through an API, CLI or MCP server.

    3
    Active
    From $10/yr
46. #187M

    mailexodus

    Generates migration playbooks for email platform transfers, mapping source exports to destination imports.

    2
    Maintained
47. #192C

    CurioMCP · sign-in

    Provides design style libraries in markdown format for AI agents to apply to generated content.

    2
    Active
    From $9.90/mo
48. #195B

    Bugsly

    Analyzes stack traces to explain errors and suggest fixes, with billing by unique issues instead of raw events.

    2
    Active
    From $19/mo