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Microworkers is a crowdsourcing marketplace for microtasks. Create campaigns to get workers to sign up for services, collect data, moderate content, and complete other human-intelligence tasks. 2M+ global workers. Pay per task starting at $0.10.
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Browse all toolsDomain knowledge for Microworkers — workflow patterns, data models, and gotchas for your AI agent.
Crowdsourcing marketplace: employers post campaigns, workers submit proof, employers rate Satisfied / Revise / Not satisfied. Charged only for Satisfied tasks.
Copy: Clear numbered steps; general audience; no ALL CAPS steps, rude tone, or CAPS warnings/threats. Proofs in the proof box only — never email. Targeting: Intl campaigns for broad workers (country exclusion OK). Fair review: Satisfied when requirements met; Revise if incomplete; Not satisfied with reason if not met. Allowed: Articles, social actions, bookmarks, signups/referrals, transcription, extraction, app/site testing, file up/download, etc. Forbidden: Worker payments (cards, bank, fees, auto-charge trials), spam/ad clicks, negative or fake reviews, dating/adult, phone-activated tasks, survey/offer-wall farming, >3 connected tasks, off-platform contact or payment. Blocklist: CPA/offer programs, ad-click tasks, Google/Yelp/Amazon/Craigslist reviews, crypto exchanges, dating/adult, and many named platforms (Yelp, Amazon, Google AdSense, Binance, OnlyFans, Trust Pilot, etc.).
Deposits: card, Skrill, Dwolla (US). Not charged for Not satisfied ratings.
Slot flow: UNTAKEN → LOCKED → NOTRATED → OK/NOK/REVISE (+ REFUNDED, NOTREVIEWED).
Review blockers often appear only in employer INBOX, not in campaign GET, the dashboard, or API v2 — the campaign may stay PENDING_REVIEW with no blocked_reason while admin asks for URL/copy/geo fixes.
Legacy API: api.microworkers.com. Message IDs in URL path, not query params. Types: O-GENERAL, E-CAMPAIGN, E-ENABLE-CHAT, E-OTHER — pass include=message_types when listing.
Each slot includes answers (form responses), assigned_task_data (key-value pairs from the assigned task), and task_ids. For unique campaigns, compare assigned data against answers.
Create a campaign targeting a specific hire group of workers.
Delete a stopped campaign. The campaign must be stopped first. This permanently removes it from your account.
Delete a stopped hire group campaign.
Move a support inbox message to trash (legacy API: PUT /message/delete/{message_id}).
Delete all untaken slots from a tasks group. Only removes slots with UNTAKEN status.
Delete a custom template. Cannot delete templates that are in use by active campaigns.
Get the download URL for a worker's file proof. The URL requires authentication with the API key header.
Exclude a worker from all your future campaigns. Use for workers who submit low-quality or spam work. To undo, remove the worker from the exclusion li...
Get your Microworkers account ID and balance. The balance shows how much money is available to fund campaigns. Deposit funds at https://www.microworke...
Read Basic Campaigns (API: GET /basic-campaigns or /basic-campaigns/{id}). Omit campaign_id to list your campaigns with pagination (next_page_token). ...
Microworkers campaign categories. Omit category_id to list every category (id + title); pass category_id to fetch a single category. Comma-separated i...
Read hire group campaigns. Without campaign_id, lists your campaigns. With campaign_id, returns details for one campaign.
List Microworkers hire groups (built-in defaults, your custom groups, or both). Use group IDs when creating hire group campaigns. For scope 'all', pag...
Check the status of an async job. Some operations (like campaign restart, adding task groups) return a job ID. Use this to see if the job completed su...
Read employer support inbox messages on api.microworkers.com. Omit message_id to list messages (optionally filter by folder, unread state, dates, or c...
Get slot details or list worker submission slots. With slot_id: returns one slot (answers, status, file proofs). Without slot_id: pass campaign_id and...
Read tasks for a Basic Campaign (GET /basic-campaigns/{campaign_id}/tasks[/task_id]). campaign_id is required. Without task_id, lists tasks with page_...
Read tasks groups for a Basic Campaign (GET …/tasks-groups or …/tasks-groups/{tasks_group_id}). campaign_id is required. Without tasks_group_id, retur...
Task form templates: HTML instructions and questions workers fill out. Omit template_id to list your custom templates with page_size / next_page_token...
Read Microworkers account transactions (GET /accounts/me/transactions or …/transactions/{id}). Omit transaction_id to list with optional transaction_t...
Get information about a Microworkers worker by their ID.
Give a bonus to a worker for a completed slot. The bonus must be between 10% and 200% of the position cost. Can only be given to slots rated as OK (Sa...
Pause an active campaign. Workers currently working can finish, but no new workers can accept tasks. Resume the campaign to reactivate.
Pause a hire group campaign. Suspends new task pickup without deleting campaign data; use mw_resume_hire_group_campaign to restore availability.
Rate a worker's submitted task. 'OK' approves and pays the worker, 'NOK' rejects (no payment, must include reason), 'REVISE' sends it back for the wor...
Remove a worker from your exclusion list so they can work on your campaigns again.
Restart a finished or stopped campaign with additional positions. Minimum 30 positions.
Resume a paused campaign so new workers can accept tasks again.
Resume a paused hire group campaign.
Stop a campaign permanently. Unfinished positions are refunded. This cannot be undone — pause the campaign instead if you want to temporarily halt.
Stop a hire group campaign permanently.
Update question settings on a campaign — make answers required, enforce unique answers across the campaign or per question.
Update question settings on a template — make answers required or enforce unique answers.
Create or update a Basic Campaign (Pattern B). Omit campaign_id to POST a new campaign — supply title, description, category_id, payment_per_task, tem...
Create or reply on the employer support inbox (legacy api.microworkers.com). Omit reply_to_message_id to start a new thread. Set reply_to_message_id t...
Create or update a tasks group under a Basic Campaign (Pattern B). Omit tasks_group_id and pass tasks[] to POST /basic-campaigns/{campaign_id}/tasks-g...
Create or update a reusable task template. Omit template_id to create (POST); pass template_id to update (PUT). Creating requires title and html_code....
Microworkers is a crowdsourcing marketplace for microtasks. Create campaigns to get workers to sign up for services, collect data, moderate content, and complete other human-intelligence tasks. 2M+ global workers. Pay per task starting at $0.10. It provides 37 tools that AI agents can use through the Model Context Protocol (MCP).
Add the MCPBundles server URL to your MCP client configuration (Claude Desktop, Cursor, VS Code, etc.). The URL format is: https://mcp.mcpbundles.com/bundle/microworkers. Authentication is handled automatically.
Microworkers provides 37 tools that can be called by AI agents, along with a SKILL.md that gives your AI agent domain knowledge about when and how to use them.
Microworkers uses API Key. Microworkers requires credentials. Connect via MCPBundles and authentication is handled automatically.
Connect Microworkers to any MCP client in minutes
https://mcp.mcpbundles.com/bundle/microworkersThe link prefills the Add custom connector dialog — you still review the values and click Add, then Connect to complete OAuth.
Microworkers and paste the MCP URL into Remote MCP server URL.Custom connectors at claude.ai require a paid Claude plan (Pro, Max, Team, or Enterprise).
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