Manifold
Server Details
The Manifold Markets MCP server provides comprehensive access to prediction market features, enabling users to create and manage markets, execute trades, and manage liquidity through a clean interface. It facilitates sophisticated market interactions with Manifold's platform, including market discovery, trading operations, information retrieval for users and portfolios, and social features like following markets and transferring mana.
- Status
- Healthy
- Last Tested
- Transport
- Streamable HTTP
- URL
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Tool Definition Quality
Score is being calculated. Check back soon.
Available Tools
5 toolsget-betsGet BetsCInspect
Get bets from markets or for users with various filtering options
| Name | Required | Description | Default |
|---|---|---|---|
| id | No | Optional. Bet ID to filter by | |
| after | No | Optional. Get bets after this bet ID | |
| kinds | No | Optional. Filter by bet kind | |
| limit | No | Optional. Number of bets to return (default: 1000) | |
| order | No | Optional. Sort order by creation time | |
| before | No | Optional. Get bets before this bet ID | |
| userId | No | Optional. User ID to filter by | |
| answerId | No | Optional. Answer ID to filter by | |
| username | No | Optional. Username to filter by | |
| afterTime | No | Optional. Get bets after this timestamp | |
| minAmount | No | Optional. Minimum bet amount | |
| beforeTime | No | Optional. Get bets before this timestamp | |
| contractId | No | Optional. Contract ID(s) to filter by | |
| contractSlug | No | Optional. Contract slug to filter by | |
| filterRedemptions | No | Optional. Filter redemptions |
Tool Definition Quality
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden of behavioral disclosure. It states the tool 'gets bets' but doesn't describe whether this is a read-only operation, what permissions are required, how results are paginated or limited, or what the return format looks like. For a tool with 15 parameters and no output schema, this is a significant gap in behavioral context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single, efficient sentence that states the core purpose without unnecessary words. It's appropriately sized for a tool with many parameters, though it could be slightly more informative given the complexity. There's no wasted verbiage, making it front-loaded and clear.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity (15 parameters, no output schema, no annotations), the description is incomplete. It doesn't explain the return values, pagination behavior, or error conditions, which are critical for an agent to use this tool effectively. The high parameter count and lack of output schema demand more contextual information than provided.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema description coverage is 100%, meaning all parameters are documented in the input schema. The description adds minimal value beyond this by mentioning 'various filtering options', which aligns with the schema but doesn't provide additional syntax, format details, or usage examples. This meets the baseline of 3 for high schema coverage.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose as 'Get bets from markets or for users with various filtering options', which specifies the verb ('Get'), resource ('bets'), and scope ('from markets or for users'). It doesn't explicitly differentiate from sibling tools like 'get-market' or 'get-user', but the focus on bets is clear enough to distinguish it from those sibling tools that target different resources.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides no guidance on when to use this tool versus alternatives. It mentions 'various filtering options' but doesn't specify when to use this tool over sibling tools like 'search-markets' or 'search-users', nor does it indicate prerequisites or exclusions. This leaves the agent without context for tool selection.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get-marketGet MarketCInspect
Get detailed information about a specific market
| Name | Required | Description | Default |
|---|---|---|---|
| id | Yes | Market ID |
Tool Definition Quality
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden of behavioral disclosure. It states 'get detailed information', implying a read-only operation, but doesn't address critical aspects like authentication needs, rate limits, error handling, or what 'detailed information' includes. This leaves significant gaps for an agent to understand the tool's behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single, efficient sentence that directly states the tool's purpose without unnecessary words. It is front-loaded and appropriately sized for a simple tool, making it easy to parse quickly.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the lack of annotations and output schema, the description is incomplete. It doesn't explain what 'detailed information' entails, such as the structure or fields returned, nor does it cover behavioral aspects like permissions or errors. For a tool with no structured support, this leaves too many unknowns for effective use.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 100% description coverage, with the 'id' parameter documented as 'Market ID'. The description adds no additional meaning beyond this, such as format examples or constraints, but the schema provides adequate baseline information, justifying a score of 3.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the verb ('get') and resource ('detailed information about a specific market'), making the purpose understandable. However, it doesn't explicitly differentiate from sibling tools like 'search-markets', which might retrieve multiple markets or have different filtering capabilities.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides no guidance on when to use this tool versus alternatives like 'search-markets' or other siblings. It mentions 'specific market' but doesn't clarify prerequisites, such as needing a market ID, or contrast it with tools for broader searches.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get-userGet UserCInspect
Get user information by username
| Name | Required | Description | Default |
|---|---|---|---|
| username | Yes | Username |
Tool Definition Quality
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It states this is a read operation ('Get'), but doesn't mention authentication requirements, rate limits, error handling, or what specific user information is returned. For a tool with zero annotation coverage, this leaves significant gaps in understanding its behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single, efficient sentence that communicates the core purpose without any wasted words. It's appropriately sized for a simple lookup tool and is front-loaded with essential information.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a tool with no annotations and no output schema, the description is insufficiently complete. It doesn't explain what user information is returned, how errors are handled, or any behavioral constraints. Given the lack of structured data elsewhere, the description should provide more context about the tool's operation and results.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema description coverage is 100%, with the single parameter 'username' already documented in the schema. The description adds no additional semantic information about the parameter beyond what the schema provides, so it meets the baseline score for high schema coverage.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the action ('Get') and resource ('user information') with a specific mechanism ('by username'), making the purpose immediately understandable. However, it doesn't differentiate from sibling tools like 'search-users' which might also retrieve user information, so it doesn't reach the highest score.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides no guidance on when to use this tool versus alternatives like 'search-users'. It doesn't mention prerequisites, error conditions, or any contextual factors that would help an agent choose between this and sibling tools.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
search-marketsSearch MarketsCInspect
Search for prediction markets with optional filters
| Name | Required | Description | Default |
|---|---|---|---|
| sort | No | Sort order (default: score) | |
| term | Yes | Search query | |
| limit | No | Max number of results (default: 100) | |
| filter | No | Filter by question state. Resolved means the event has happened. (default: all) | |
| offset | No | Offset for pagination (default: 0) | |
| creatorId | No | Optional. Creator (user) ID to filter by | |
| contractType | No | Question type (default: ALL) |
Tool Definition Quality
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral disclosure. It mentions 'optional filters' but doesn't describe what the search returns (e.g., list of markets with basic info), pagination behavior (implied by 'offset' but not explained), rate limits, authentication needs, or error conditions. This is inadequate for a search tool with 7 parameters.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single, efficient sentence with zero wasted words. It's appropriately sized and front-loaded with the core purpose.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a search tool with 7 parameters, no annotations, and no output schema, the description is incomplete. It doesn't explain what constitutes a 'prediction market' in this context, what fields are returned, how results are structured, or any behavioral aspects like rate limits or authentication requirements.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the schema fully documents all parameters. The description adds no additional parameter semantics beyond mentioning 'optional filters', which is already obvious from the schema. Baseline 3 is appropriate when the schema does all the work.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the verb ('search') and resource ('prediction markets'), and mentions optional filters. However, it doesn't explicitly differentiate from sibling tools like 'get-market' or 'search-users' beyond the resource type, which prevents a perfect score.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides no guidance on when to use this tool versus alternatives like 'get-market' (which likely retrieves a specific market) or 'search-users'. There's no mention of prerequisites, typical use cases, or exclusions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
search-usersSearch UsersCInspect
Search for users by username or display name
| Name | Required | Description | Default |
|---|---|---|---|
| page | No | Page number for pagination (default: 0) | |
| term | Yes | Search query for username or display name | |
| limit | No | Max number of results (default: 500) |
Tool Definition Quality
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral disclosure but only states the basic search functionality. It doesn't mention authentication requirements, rate limits, pagination behavior beyond what's in the schema, or what happens when no users match the search term.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is extremely concise at just 7 words with zero wasted language. It's front-loaded with the core functionality and uses simple, direct language that's easy to parse.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a search tool with no annotations and no output schema, the description is inadequate. It doesn't explain what the search returns (user objects? IDs only?), how results are ordered, whether it's fuzzy or exact matching, or any limitations of the search functionality.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the schema already documents all three parameters thoroughly. The description adds no additional parameter information beyond what's in the schema, maintaining the baseline score for high schema coverage.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose as searching for users by username or display name, which is a specific verb+resource combination. However, it doesn't differentiate from sibling tools like 'get-user' or explain how this search differs from a direct user lookup.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides no guidance on when to use this tool versus alternatives like 'get-user' or other search tools. There's no mention of prerequisites, typical use cases, or when this search approach is preferred over direct retrieval.
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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