Turn a reaction into an API documentation lookup
A lightweight reaction can flag a question for research, so the team does not have to rely on memory or remember to circle back.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Action
Query-docs
Retrieves and queries up-to-date documentation and code examples from Context7 for any programming library or framework. You must call 'resolve-library-id' first to obtain the exact Context7-compatible library ID required to use this tool, UNLESS the user explicitly provides a library ID in the format '/org/project' or '/org/project/version' in their query. IMPORTANT: Do not call this tool more than 3 times per question. If you cannot find what you need after 3 calls, use the best information you have.
Why this helps
Questions get acknowledged in Slack but the follow-up research is easy to forget amid other work.
- Use a familiar reaction as a clear research signal.
- Retrieve documentation tied to the API question.
- Reduce the chance that acknowledged questions disappear in a busy channel.
Setup
Build it in a few focused steps.
- 1Connect Slack and Context7 MCP to Notis once through the portal.
- 2Create an automation in the portal with a plain-language instruction to query Context7 for the API named in a reacted-to message.
- 3Select Message Reaction Added as the trigger and choose a reporting channel for runs.
- 4Add the chosen reaction to one real API question to test the workflow.
Questions about this workflow
Can I choose which reaction starts the lookup?
Describe the intended reaction in the automation prompt and select the reaction trigger when creating the automation.
Does it need a library ID in the message?
No. The prompt can ask Notis to resolve the library name first, then query Context7.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Context7 MCP. A trigger fires from one place; an action lands in another.
Slack triggers
Context7 MCP actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Query-docs
Retrieves and queries up-to-date documentation and code examples from Context7 for any programming library or framework. You must call 'resolve-library-id' first to obtain the exact Context7-compatible library ID required to use this tool, UNLESS the user explicitly provides a library ID in the format '/org/project' or '/org/project/version' in their query. IMPORTANT: Do not call this tool more than 3 times per question. If you cannot find what you need after 3 calls, use the best information you have.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Resolve-library-id
Resolves a package/product name to a Context7-compatible library ID and returns matching libraries. You MUST call this function before 'query-docs' to obtain a valid Context7-compatible library ID UNLESS the user explicitly provides a library ID in the format '/org/project' or '/org/project/version' in their query. Selection Process: 1. Analyze the query to understand what library/package the user is looking for 2. Return the most relevant match based on: - Name similarity to the query (exact matches prioritized) - Description relevance to the query's intent - Documentation coverage (prioritize libraries with higher Code Snippet counts) - Source reputation (consider libraries with High or Medium reputation more authoritative) - Benchmark Score: Quality indicator (100 is the highest score) Response Format: - Return the selected library ID in a clearly marked section - Provide a brief explanation for why this library was chosen - If multiple good matches exist, acknowledge this but proceed with the most relevant one - If no good matches exist, clearly state this and suggest query refinements For ambiguous queries, request clarification before proceeding with a best-guess match. IMPORTANT: Do not call this tool more than 3 times per question. If you cannot find what you need after 3 calls, use the best result you have.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Connect any two apps with Notis in the middle.
Slack and Context7 MCP, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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