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brothaakhee

groundtruther-mcp

by brothaakhee

post_mission

Create a real-world task for a human worker to complete, specifying details like location, deadline, and required proof.

Instructions

Post a new mission for a human worker to complete in the real world.

IMPORTANT — A real person will read your mission and attempt to complete it. Write as if you are briefing a competent stranger who has never heard of your project. Everything they need to know must be in the mission itself.

WRITING EFFECTIVE MISSIONS:

  • Title: Be specific and location-aware. "Photograph Whole Foods entrance on 4th St" not "Take a photo."

  • Description: Lead with WHAT the worker must do, then WHERE, then any special instructions. Use short paragraphs or bullet points — never walls of text.

  • Budget: Should reflect the time, travel, and difficulty involved. A 15-minute photo errand ~ $25-35. A multi-hour skilled task ~ $80-200. Underpaying leads to unclaimed missions.

  • Deadline: Give workers realistic time. Same-day is possible but costs more and limits the worker pool.

  • Category: Pick the one that best matches the core skill required, not the surface activity.

ACCEPTANCE CONTRACT — This defines what proof the worker must submit:

  • "notes" (REQUIRED): Step-by-step instructions for the worker. Be explicit: "Take a photo of the front entrance showing the store sign and street number" is far better than "Take a photo of the store." Include edge cases: "If the store is closed, photograph the hours-of-operation sign instead."

  • "required_media": Each item should have a descriptive label that tells the worker exactly what to capture. "Photo of sealed envelope with visible label" not "Photo 1."

  • "required_fields": Use for structured data you need back. Label clearly — "Price per pound ($)" not "price."

  • "required_urls": For document/link submissions.

  • "gps_required": Set true for any mission where physical presence matters. Pair with gps_max_distance_mi to enforce proximity.

  • Must include "notes" AND at least one of: required_media, required_fields, or required_urls.

VALID KEYS in acceptance_contract (unknown keys are rejected): "notes", "required_media", "required_fields", "required_urls", "gps_required", "gps_max_distance_mi", "gps_required_at_waypoints" (DELIVERY only), "min_photos_per_waypoint" (DELIVERY only).

NOTE ON GPS MISSIONS: Missions with gps_required=true will primarily be picked up by mobile app workers rather than webapp workers. This is expected — most workers doing physical tasks are on mobile.

COMMON MISTAKES TO AVOID:

  • Vague acceptance criteria ("submit proof") — be specific about what proof means

  • Missing context the worker needs ("go to the office" — which office? what floor?)

  • Requiring GPS for DIGITAL_REMOTE missions (will be rejected)

  • Setting budgets below what you'd accept for the same work

Args: title: Specific, actionable title (e.g., "Photograph EV charging stations in Hayes Valley") description: Detailed mission brief — what, where, why, and any special instructions. Use bullet points for multi-step tasks. deadline: ISO 8601 datetime (e.g., "2025-03-11T00:00:00Z"). Give at least 24h for physical tasks. budget_amount: USD amount escrowed from your wallet (e.g., 35.00). See budget guidance above. category: PHYSICAL_WORLD, IDENTITY_LEGAL, OFFLINE_GATED, EMBODIED_JUDGMENT, SOCIAL_RELATIONAL, EXPERT_CURATION, DELIVERY, or DIGITAL_REMOTE acceptance_contract: JSON string defining proof requirements (see schema and examples above). Photo mission example: {"required_media": [{"type": "photo", "label": "Store entrance", "required": true}], "gps_required": true, "notes": "Take a clear photo on-site."} Data collection example: {"required_fields": [{"key": "store_name", "type": "text", "label": "Store Name", "required": true}, {"key": "price", "type": "number", "label": "Price ($)", "required": true}], "notes": "Visit the store and record the details."} Mixed example: {"required_media": [{"type": "photo", "label": "Receipt photo", "required": true}], "required_fields": [{"key": "total", "type": "number", "label": "Receipt Total", "required": true}], "notes": "Photograph the receipt and enter the total."} lat: Latitude (required for all categories except DIGITAL_REMOTE) lng: Longitude (required for all categories except DIGITAL_REMOTE) radius_mi: How far from the pin the worker can be (e.g., 1.0 for a neighborhood, 0.3 for a specific building) template_id: Optional UUID — use get_templates to find reusable schemas

Returns: JSON string with created mission details or error message. On success (201), returns mission UUID and status. On 402 Payment Required, returns balance/limit error — ask your agent owner (the human who manages your account) to allocate more funds. Do not silently skip missions or reduce budgets below appropriate levels to work around this. On 401 Unauthorized, returns authentication error.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
latNo
lngNo
titleYes
categoryYes
deadlineYes
radius_miNo
descriptionYes
template_idNo
budget_amountYes
acceptance_contractYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description fully bears the burden. It discloses critical behavioral traits: acceptance contract rejects unknown keys, GPS missions are picked by mobile workers, error codes (201, 402, 401) with specific actions, and the need for realistic budgets and deadlines.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is well-structured with headings and bullet points, making key information scannable. However, it is quite long; while every sentence adds value, it could be slightly more concise without losing clarity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (10 parameters, nested acceptance_contract, output schema present), the description covers all necessary context: return values, error handling, common mistakes, and best practices for mission creation. It is thorough and complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 0% schema description coverage, the description compensates completely. Each parameter in the 'Args' section has a detailed explanation, including format, examples, and constraints (e.g., 'title: Specific, actionable title...', 'acceptance_contract: JSON string defining proof requirements...' with multiple examples).

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: 'Post a new mission for a human worker to complete in the real world.' It uses a specific verb ('Post') and resource ('mission'), and the extensive detail distinguishes it from sibling tools like 'list_my_missions' or 'approve_mission'.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides extensive usage guidelines, including sections on WRITING EFFECTIVE MISSIONS, ACCEPTANCE CONTRACT, COMMON MISTAKES TO AVOID, and example values for parameters. It explicitly advises on when to use GPS (physical tasks) and not to use for DIGITAL_REMOTE, and contrasts with 'get_templates' for reusable schemas.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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