mcp-ipfs

Instructions

Implementation Reference

• src/tool_handlers.ts:487-527 (handler)

  The main execution logic for the w3_can_blob_add tool: parses input args using the schema, executes the 'w3 can blob add' CLI command, parses the multihash and CID from stdout, and returns structured JSON response.

  const handleW3CanBlobAdd: ToolHandler = async (args) => {
    const parsed = Schemas.W3CanBlobAddArgsSchema.safeParse(args);
    if (!parsed.success)
      throw new Error(
        `Invalid arguments for w3_can_blob_add: ${parsed.error.message}`
      );
    const { path } = parsed.data;
    const { stdout } = await runW3Command(`can blob add "${path}"`);
    const match = stdout.match(/Stored\s+(\S+)\s+\((\S+)\)/);
    const multihash = match?.[1];
    const cid = match?.[2];
    if (!multihash || !cid) {
      logger.warn(
        `w3_can_blob_add: Could not parse multihash/CID from output: ${stdout}`
      );
      return {
        content: [
          {
            type: "text",
            text: JSON.stringify({
              message: "Blob added, but output parsing failed.",
              output: stdout.trim(),
            }),
          },
        ],
      };
    }
    return {
      content: [
        {
          type: "text",
          text: JSON.stringify({
            message: "Blob added successfully.",
            multihash,
            cid,
            output: stdout.trim(),
          }),
        },
      ],
    };
  };

• src/schemas.ts:189-193 (schema)

  Zod schema defining the input arguments for the tool: requires an absolute path to the blob file.

  export const W3CanBlobAddArgsSchema = z
    .object({
      path: z.string().describe("ABSOLUTE path to the blob file to store."),
    })
    .describe("Stores a single file as a blob directly with the service.");

• src/tool_handlers.ts:944-980 (registration)

  Maps the tool name 'w3_can_blob_add' to its handler function in the central toolHandlers registry, which is used by index.ts to dispatch calls.

  export const toolHandlers: Record<string, ToolHandler> = {
    w3_login: handleW3Login,
    w3_space_ls: handleW3SpaceLs,
    w3_space_use: handleW3SpaceUse,
    w3_space_create: handleW3SpaceCreate,
    w3_up: handleW3Up,
    w3_ls: handleW3Ls,
    w3_rm: handleW3Rm,
    w3_open: handleW3Open,
    w3_space_info: handleW3SpaceInfo,
    w3_space_add: handleW3SpaceAdd,
    w3_delegation_create: handleW3DelegationCreate,
    w3_delegation_ls: handleW3DelegationLs,
    w3_delegation_revoke: handleW3DelegationRevoke,
    w3_proof_add: handleW3ProofAdd,
    w3_proof_ls: handleW3ProofLs,
    w3_key_create: handleW3KeyCreate,
    w3_bridge_generate_tokens: handleW3BridgeGenerateTokens,
    w3_can_blob_add: handleW3CanBlobAdd,
    w3_can_blob_ls: handleW3CanBlobLs,
    w3_can_blob_rm: handleW3CanBlobRm,
    w3_can_index_add: handleW3CanIndexAdd,
    w3_can_upload_add: handleW3CanUploadAdd,
    w3_can_upload_ls: handleW3CanUploadLs,
    w3_can_upload_rm: handleW3CanUploadRm,
    w3_plan_get: handleW3PlanGet,
    w3_account_ls: handleW3AccountLs,
    w3_space_provision: handleW3SpaceProvision,
    w3_coupon_create: handleW3CouponCreate,
    w3_usage_report: handleW3UsageReport,
    w3_can_access_claim: handleW3CanAccessClaim,
    w3_can_store_add: handleW3CanStoreAdd,
    w3_can_store_ls: handleW3CanStoreLs,
    w3_can_store_rm: handleW3CanStoreRm,
    w3_can_filecoin_info: handleW3CanFilecoinInfo,
    w3_reset: handleW3Reset,
  };