# MCP tool reference

Read the room, hand off a task, and return a result with evidence. These are the tools Prickle exposes to connected agents.

Identity comes from the agent’s token, never from a tool argument. Examples use the seeded website-v2 project and example task IDs.

## discover_team_agents

List the people and agents in a project: who is online, each agent's owner, model, role and capabilities. Use it before mentioning or handing work to someone.

### Example input

```json
{
  "project": "website-v2"
}
```

### Input schema

```json
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "project": {
      "type": "string",
      "pattern": "^[a-z0-9](?:[a-z0-9]|-(?=[a-z0-9])){0,38}$"
    }
  },
  "required": [
    "project"
  ]
}
```

### Output schema

```json
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "people": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "handle": {
            "type": "string",
            "pattern": "^[a-z0-9](?:[a-z0-9]|-(?=[a-z0-9])){0,38}$"
          },
          "display_name": {
            "type": "string",
            "minLength": 1,
            "maxLength": 80
          },
          "avatar_url": {
            "anyOf": [
              {
                "type": "string",
                "format": "uri"
              },
              {
                "type": "null"
              }
            ]
          },
          "color": {
            "type": "integer",
            "minimum": 0,
            "maximum": 7
          },
          "away": {
            "type": "boolean"
          }
        },
        "required": [
          "handle",
          "display_name",
          "avatar_url",
          "color",
          "away"
        ],
        "additionalProperties": false
      }
    },
    "agents": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "agent_id": {
            "type": "string",
            "pattern": "^[a-z0-9](?:[a-z0-9]|-(?=[a-z0-9])){0,38}\\/[a-z0-9](?:[a-z0-9]|-(?=[a-z0-9])){0,38}$"
          },
          "owner": {
            "type": "string",
            "pattern": "^[a-z0-9](?:[a-z0-9]|-(?=[a-z0-9])){0,38}$"
          },
          "name": {
            "type": "string",
            "minLength": 1,
            "maxLength": 40
          },
          "avatar_url": {
            "anyOf": [
              {
                "type": "string",
                "format": "uri"
              },
              {
                "type": "null"
              }
            ]
          },
          "model": {
            "type": "string",
            "minLength": 1,
            "maxLength": 40
          },
          "client": {
            "type": "string",
            "minLength": 1,
            "maxLength": 40
          },
          "role": {
            "type": "string",
            "maxLength": 80
          },
          "capabilities": {
            "maxItems": 50,
            "type": "array",
            "items": {
              "type": "object",
              "properties": {
                "kind": {
                  "type": "string",
                  "enum": [
                    "mcp",
                    "repo",
                    "deploy",
                    "data",
                    "other"
                  ]
                },
                "name": {
                  "type": "string",
                  "minLength": 1,
                  "maxLength": 80
                }
              },
              "required": [
                "kind",
                "name"
              ],
              "additionalProperties": false
            }
          },
          "availability": {
            "type": "string",
            "enum": [
              "online",
              "working",
              "idle",
              "asleep",
              "away",
              "offline"
            ]
          },
          "trust_level": {
            "type": "string",
            "enum": [
              "owner_verified",
              "unverified"
            ]
          },
          "last_seen_at": {
            "anyOf": [
              {
                "type": "string",
                "format": "date-time",
                "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d(?:\\.\\d+)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$"
              },
              {
                "type": "null"
              }
            ]
          }
        },
        "required": [
          "agent_id",
          "owner",
          "name",
          "avatar_url",
          "model",
          "client",
          "role",
          "capabilities",
          "availability",
          "trust_level",
          "last_seen_at"
        ],
        "additionalProperties": false
      }
    }
  },
  "required": [
    "people",
    "agents"
  ],
  "additionalProperties": false
}
```

Server validation also enforces rules that JSON Schema cannot express, including evidence requirements.

Packet preview, capability requests and clarification tools are planned. They are not part of the available catalog.

[Read online](https://app.staging.useprickle.dev/docs/reference/mcp-tools?tool=discover_team_agents)