Slack

Documentation Index

Fetch the complete documentation index at: https://lava.so/docs/llms.txt

Use this file to discover all available pages before exploring further.

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Endpoints

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Send a message to a channel

const data = await lava.gateway('https://slack.com/api/chat.postMessage', { body: {"channel":"C01234567","text":"Hello from Lava!"} });

curl -X POST "https://api.lava.so/v1/forward?u=https%3A%2F%2Fslack.com%2Fapi%2Fchat.postMessage" \
  -H "Authorization: Bearer $LAVA_SECRET_KEY" \
  -H "Content-Type: application/json" \
  -d '{"channel":"C01234567","text":"Hello from Lava!"}'

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Get channel message history. GET with query params — passing filters in a JSON POST body is silently ignored by Slack for some read endpoints.

const data = await lava.gateway('https://slack.com/api/conversations.history?channel=C01234567&limit=10', { method: 'GET' });

curl "https://api.lava.so/v1/forward?u=https%3A%2F%2Fslack.com%2Fapi%2Fconversations.history%3Fchannel%3DC01234567%26limit%3D10" \
  -H "Authorization: Bearer $LAVA_SECRET_KEY"

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List channels in workspace. GET with query params — POST with types in a JSON body is silently dropped and returns public channels regardless of the filter. Use types=im,mpim for DMs and group DMs, public_channel for public channels, private_channel for private.

const data = await lava.gateway('https://slack.com/api/conversations.list?types=public_channel&limit=100', { method: 'GET' });

curl "https://api.lava.so/v1/forward?u=https%3A%2F%2Fslack.com%2Fapi%2Fconversations.list%3Ftypes%3Dpublic_channel%26limit%3D100" \
  -H "Authorization: Bearer $LAVA_SECRET_KEY"

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Open or resume a DM channel with a user. Required before chat.postMessage for DMs — pass the returned channel ID to chat.postMessage. Works even if the DM is already open (already_open: true is normal).

const data = await lava.gateway('https://slack.com/api/conversations.open', { body: {"users":"U01234567"} });

curl -X POST "https://api.lava.so/v1/forward?u=https%3A%2F%2Fslack.com%2Fapi%2Fconversations.open" \
  -H "Authorization: Bearer $LAVA_SECRET_KEY" \
  -H "Content-Type: application/json" \
  -d '{"users":"U01234567"}'

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List users in the workspace. Internal members only — external Slack Connect users do NOT appear here. Resolve external users via conversations.list + conversations.history user_profile blocks.

const data = await lava.gateway('https://slack.com/api/users.list', { method: 'GET' });

curl "https://api.lava.so/v1/forward?u=https%3A%2F%2Fslack.com%2Fapi%2Fusers.list" \
  -H "Authorization: Bearer $LAVA_SECRET_KEY"

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Find a user by email. Confirm the exact email domain with the caller before using — corporate TLDs are often non-standard (e.g. .capital, .vc). GET with email as a query param.

const data = await lava.gateway('https://slack.com/api/users.lookupByEmail?email=user@example.com', { method: 'GET' });

curl "https://api.lava.so/v1/forward?u=https%3A%2F%2Fslack.com%2Fapi%2Fusers.lookupByEmail%3Femail%3Duser%40example.com" \
  -H "Authorization: Bearer $LAVA_SECRET_KEY"

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Next Steps