MCP Server

Frontier

dev.openfrontier/frontier
AI & Agents Public & reachable MCP 2025-11-25

What this MCP does

Lists Frontier inference models and capabilities and provides read-only usage information for its API.

get_capabilities
Get Frontier capabilities
Get the public endpoints, stable aliases, and exact Chat Completions constraints.
Read only Idempotent
Input schema
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'properties': {}, 'additionalProperties': False}
Output schema
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['apiBaseUrl', 'mcpUrl', 'docsUrl', 'openapiUrl', 'accountUrl', 'modelAliases', 'chatCompletions', 'accountChanges'], 'properties': {'mcpUrl': {'type': 'string', 'const': 'https://renvoi.co/frontier/mcp'}, 'docsUrl': {'type': 'string', 'const': 'https://renvoi.co/frontier/docs'}, 'accountUrl': {'type': 'string', 'const': 'https://renvoi.co/frontier/account'}, 'apiBaseUrl': {'type': 'string', 'const': 'https://renvoi.co/frontier/v1'}, 'openapiUrl': {'type': 'string', 'const': 'https://renvoi.co/frontier/openapi.json'}, 'modelAliases': {'type': 'array', 'prefixItems': [{'type': 'string', 'const': 'frontier-auto'}, {'type': 'string', 'const': 'frontier-heavy'}, {'type': 'string', 'const': 'frontier-fast'}]}, 'accountChanges': {'type': 'string', 'const': 'browser-only'}, 'chatCompletions': {'type': 'object', 'required': ['endpoint', 'method', 'authentication', 'responseModes', 'choicesPerRequest', 'defaultMaxOutputTokens', 'maximumMaxOutputTokens', 'outputTokenFields', 'matchingOutputTokenFieldsRequired', 'imageInputAliases'], 'properties': {'method': {'type': 'string', 'const': 'POST'}, 'endpoint': {'type': 'string', 'const': 'https://renvoi.co/frontier/v1/chat/completions'}, 'responseModes': {'type': 'array', 'prefixItems': [{'type': 'string', 'const': 'buffered-json'}, {'type': 'string', 'const': 'sse'}]}, 'authentication': {'type': 'string', 'const': 'frontier-bearer-api-key'}, 'choicesPerRequest': {'type': 'number', 'const': 1}, 'imageInputAliases': {'type': 'array', 'prefixItems': [{'type': 'string', 'const': 'frontier-auto'}, {'type': 'string', 'const': 'frontier-heavy'}]}, 'outputTokenFields': {'type': 'array', 'prefixItems': [{'type': 'string', 'const': 'max_tokens'}, {'type': 'string', 'const': 'max_completion_tokens'}]}, 'defaultMaxOutputTokens': {'type': 'number', 'const': 4096}, 'maximumMaxOutputTokens': {'type': 'number', 'const': 10000000}, 'matchingOutputTokenFieldsRequired': {'type': 'boolean', 'const': True}}, 'additionalProperties': False}}, 'additionalProperties': False}
get_usage
Get Frontier usage
Read usage for the Frontier bearer API key on this MCP HTTP request.
Read only Open world Idempotent
Input schema
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'properties': {}, 'additionalProperties': False}
Output schema
{'type': 'object', 'oneOf': [{'type': 'object', 'required': ['status', 'plan', 'inference', 'requests', 'models', 'computedAt', 'accountUrl'], 'properties': {'plan': {'type': 'object', 'required': ['key', 'displayName'], 'properties': {'key': {'type': 'string', 'pattern': '^[a-z0-9][a-z0-9_-]{0,63}$'}, 'displayName': {'type': 'string', 'maxLength': 80, 'minLength': 1}}, 'additionalProperties': False}, 'models': {'type': 'array', 'items': {'enum': ['frontier-auto', 'frontier-heavy', 'frontier-fast'], 'type': 'string'}}, 'status': {'type': 'string', 'const': 'active'}, 'requests': {'type': 'object', 'required': ['capacity', 'available', 'refillIntervalMs', 'nextRefillInMs', 'fullInMs'], 'properties': {'capacity': {'type': 'integer', 'maximum': 9007199254740991, 'exclusiveMinimum': 0}, 'fullInMs': {'type': 'integer', 'maximum': 9007199254740991, 'minimum': 0}, 'available': {'type': 'integer', 'maximum': 9007199254740991, 'minimum': 0}, 'nextRefillInMs': {'type': 'integer', 'maximum': 9007199254740991, 'minimum': 0}, 'refillIntervalMs': {'type': 'number', 'minimum': 0}}, 'additionalProperties': False}, 'inference': {'type': 'object', 'required': ['capacityPercent', 'remainingPercent', 'refillPercentPerMinute', 'fullInMs'], 'properties': {'fullInMs': {'type': 'integer', 'maximum': 9007199254740991, 'minimum': 0}, 'capacityPercent': {'type': 'number', 'const': 100}, 'remainingPercent': {'type': 'number', 'maximum': 100, 'minimum': 0}, 'refillPercentPerMinute': {'type': 'number', 'minimum': 0}}, 'additionalProperties': False}, 'accountUrl': {'type': 'string', 'const': 'https://renvoi.co/frontier/account'}, 'computedAt': {'type': 'integer', 'maximum': 9007199254740991, 'minimum': 0}}, 'additionalProperties': False}, {'type': 'object', 'required': ['status', 'plan', 'inference', 'requests', 'models', 'computedAt', 'accountUrl'], 'properties': {'plan': {'type': 'null'}, 'models': {'type': 'array', 'items': {'enum': ['frontier-auto', 'frontier-heavy', 'frontier-fast'], 'type': 'string'}, 'maxItems': 0}, 'status': {'type': 'string', 'const': 'inactive'}, 'requests': {'type': 'null'}, 'inference': {'type': 'null'}, 'accountUrl': {'type': 'string', 'const': 'https://renvoi.co/frontier/account'}, 'computedAt': {'type': 'integer', 'maximum': 9007199254740991, 'minimum': 0}}, 'additionalProperties': False}], '$schema': 'https://json-schema.org/draft/2020-12/schema'}
list_models
List Frontier models
List Frontier's current stable public model aliases.
Read only Open world Idempotent
Input schema
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'properties': {}, 'additionalProperties': False}
Output schema
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['apiBaseUrl', 'docsUrl', 'models'], 'properties': {'models': {'type': 'array', 'items': {'type': 'object', 'required': ['id', 'object', 'owned_by'], 'properties': {'id': {'enum': ['frontier-auto', 'frontier-heavy', 'frontier-fast'], 'type': 'string'}, 'object': {'type': 'string', 'const': 'model'}, 'owned_by': {'type': 'string', 'const': 'frontier'}}, 'additionalProperties': False}}, 'docsUrl': {'type': 'string', 'const': 'https://renvoi.co/frontier/docs'}, 'apiBaseUrl': {'type': 'string', 'const': 'https://renvoi.co/frontier/v1'}}, 'additionalProperties': False}
Added
get_usage
Sept. 17, 2026, 12:39 p.m.
Added
get_capabilities
Sept. 17, 2026, 12:39 p.m.
Added
list_models
Sept. 17, 2026, 12:39 p.m.

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