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Merge pull request #908 from gilbrotheraway/fix/skill-mcp-args

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fix(skill-mcp): allow object args and strip quotes
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Kenny 2026-01-21 12:07:53 -05:00 committed by GitHub
commit 485bc73437
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1 changed files with 30 additions and 20 deletions
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50
src/tools/skill-mcp/tools.ts
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@ -21,10 +21,10 @@ function validateOperationParams(args: SkillMcpArgs): OperationType {
if (operations.length === 0) {
throw new Error(
`Missing operation. Exactly one of tool_name, resource_name, or prompt_name must be specified.\n\n` +
`Examples:\n` +
` skill_mcp(mcp_name="sqlite", tool_name="query", arguments='{"sql": "SELECT * FROM users"}')\n` +
` skill_mcp(mcp_name="memory", resource_name="memory://notes")\n` +
` skill_mcp(mcp_name="helper", prompt_name="summarize", arguments='{"text": "..."}')`
`Examples:\n` +
` skill_mcp(mcp_name="sqlite", tool_name="query", arguments='{"sql": "SELECT * FROM users"}')\n` +
` skill_mcp(mcp_name="memory", resource_name="memory://notes")\n` +
` skill_mcp(mcp_name="helper", prompt_name="summarize", arguments='{"text": "..."}')`,
)
}
@ -33,12 +33,14 @@ function validateOperationParams(args: SkillMcpArgs): OperationType {
args.tool_name && `tool_name="${args.tool_name}"`,
args.resource_name && `resource_name="${args.resource_name}"`,
args.prompt_name && `prompt_name="${args.prompt_name}"`,
].filter(Boolean).join(", ")
]
.filter(Boolean)
.join(", ")
throw new Error(
`Multiple operations specified. Exactly one of tool_name, resource_name, or prompt_name must be provided.\n\n` +
`Received: ${provided}\n\n` +
`Use separate calls for each operation.`
`Received: ${provided}\n\n` +
`Use separate calls for each operation.`,
)
}
@ -47,7 +49,7 @@ function validateOperationParams(args: SkillMcpArgs): OperationType {
function findMcpServer(
mcpName: string,
skills: LoadedSkill[]
skills: LoadedSkill[],
): { skill: LoadedSkill; config: NonNullable<LoadedSkill["mcpConfig"]>[string] } | null {
for (const skill of skills) {
if (skill.mcpConfig && mcpName in skill.mcpConfig) {
@ -75,7 +77,10 @@ function parseArguments(argsJson: string | Record<string, unknown> | undefined):
return argsJson
}
try {
const parsed = JSON.parse(argsJson)
// Strip outer single quotes if present (common in LLM output)
const jsonStr = argsJson.startsWith("'") && argsJson.endsWith("'") ? argsJson.slice(1, -1) : argsJson
const parsed = JSON.parse(jsonStr)
if (typeof parsed !== "object" || parsed === null) {
throw new Error("Arguments must be a JSON object")
}
@ -84,8 +89,8 @@ function parseArguments(argsJson: string | Record<string, unknown> | undefined):
const errorMessage = error instanceof Error ? error.message : String(error)
throw new Error(
`Invalid arguments JSON: ${errorMessage}\n\n` +
`Expected a valid JSON object, e.g.: '{"key": "value"}'\n` +
`Received: ${argsJson}`
`Expected a valid JSON object, e.g.: '{"key": "value"}'\n` +
`Received: ${argsJson}`,
)
}
}
@ -95,10 +100,8 @@ export function applyGrepFilter(output: string, pattern: string | undefined): st
try {
const regex = new RegExp(pattern, "i")
const lines = output.split("\n")
const filtered = lines.filter(line => regex.test(line))
return filtered.length > 0
? filtered.join("\n")
: `[grep] No lines matched pattern: ${pattern}`
const filtered = lines.filter((line) => regex.test(line))
return filtered.length > 0 ? filtered.join("\n") : `[grep] No lines matched pattern: ${pattern}`
} catch {
return output
}
@ -114,8 +117,14 @@ export function createSkillMcpTool(options: SkillMcpToolOptions): ToolDefinition
tool_name: tool.schema.string().optional().describe("MCP tool to call"),
resource_name: tool.schema.string().optional().describe("MCP resource URI to read"),
prompt_name: tool.schema.string().optional().describe("MCP prompt to get"),
arguments: tool.schema.string().optional().describe("JSON string of arguments"),
grep: tool.schema.string().optional().describe("Regex pattern to filter output lines (only matching lines returned)"),
arguments: tool.schema
.union([tool.schema.string(), tool.schema.record(tool.schema.string(), tool.schema.unknown())])
.optional()
.describe("JSON string or object of arguments"),
grep: tool.schema
.string()
.optional()
.describe("Regex pattern to filter output lines (only matching lines returned)"),
},
async execute(args: SkillMcpArgs) {
const operation = validateOperationParams(args)
@ -125,9 +134,10 @@ export function createSkillMcpTool(options: SkillMcpToolOptions): ToolDefinition
if (!found) {
throw new Error(
`MCP server "${args.mcp_name}" not found.\n\n` +
`Available MCP servers in loaded skills:\n` +
formatAvailableMcps(skills) + `\n\n` +
`Hint: Load the skill first using the 'skill' tool, then call skill_mcp.`
`Available MCP servers in loaded skills:\n` +
formatAvailableMcps(skills) +
`\n\n` +
`Hint: Load the skill first using the 'skill' tool, then call skill_mcp.`,
)
}